物理化学学报最新文献

{"title":"Optimizing Poly(heptazine imide) Photoanodes Using Binary Molten Salt Synthesis for Water Oxidation Reaction","authors":"Jiaxin Su ,&nbsp;Jiaqi Zhang ,&nbsp;Shuming Chai ,&nbsp;Yankun Wang ,&nbsp;Sibo Wang ,&nbsp;Yuanxing Fang","doi":"10.3866/PKU.WHXB202408012","DOIUrl":"10.3866/PKU.WHXB202408012","url":null,"abstract":"<div><div>Polymer-based photoanodes for the water oxidation reaction have recently garnered attention, with carbon nitride standing out due to its numerous advantages. This study focuses on synthesizing crystalline carbon nitride photoanodes, specifically poly(heptazine imide) (PHI), and explores the role of salts in their production. Using a binary molten salt system, optimal photocurrent density of 365 μA·cm⁻² was achieved with a voltage bias of 1.23 V <em>versus</em> the reversible hydrogen electrode under AM 1.5G illumination, this performance is <em>ca</em>. 18 times to the pristine PCN photoanode. In this process, NH₄SCN facilitates the growth of SnS₂ seeding layers, while K₂CO₃ enhances film crystallinity. <em>In situ</em> electrochemical analyses show that this salt combination improves photoexcited charge transfer efficiency and minimizes resistance in the SnS₂ layer. This study clarifies the role of salts in synthesizing the PHI photoanode and provides insights for designing high-crystallinity carbon nitride-based functional films.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (164KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"40 12","pages":"Article 2408012"},"PeriodicalIF":10.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Carbon Quantum Dots/CdS/Ta3N5 S-Scheme Heterojunction Nanofibers for Efficient Photocatalytic Antibiotic Removal","authors":"Shijie Li ,&nbsp;Ke Rong ,&nbsp;Xiaoqin Wang ,&nbsp;Chuqi Shen ,&nbsp;Fang Yang ,&nbsp;Qinghong Zhang","doi":"10.3866/PKU.WHXB202403005","DOIUrl":"10.3866/PKU.WHXB202403005","url":null,"abstract":"<div><div>Photocatalytic pollutant removal provides a competitive manner for wastewater purification. The exploration of efficient and durable photocatalysts is significant for this technique. Integrating carbon quantum dots and S-scheme junction into one system represents an effective strategy for achieving the outstanding photocatalytic efficacy. In comparison to S-scheme junction, photocatalysts combining carbon quantum dots and S-scheme junction harness the merits of both, thus holding greater potential. Herein, a multicomponent fibrous photocatalyst of carbon quantum dots/CdS/Ta₃N₅ that incorporates S-scheme heterojunction and carbon quantum dots is developed for high-efficient destruction of levofloxacin antibiotic. The as-prepared carbon quantum dots/CdS/Ta₃N₅ heterojunction nanofibers manifest a significantly strengthened photocatalytic levofloxacin degradation activity, with the rate constant (0.0404 min⁻¹) exceeding Ta₃N₅, CdS/Ta₃N₅, and CdS by 39.4, 2.1, and 7.2 folds. Such remarkable photocatalytic performance is credited to the unique 1D/0D/0D core-shell heterostructure with compact-bound hetero-interface, which favors the synergistic effect between carbon quantum dots modification and S-scheme junction. This work offers a new way for developing new Ta₃N₅-based heterojunctions for environmental remediation.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (136KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"40 12","pages":"Article 2403005"},"PeriodicalIF":10.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Performance of Ternary NASICON-Type Na3.5−xMn0.5V1.5−xZrx (PO4)3/C Cathodes for Sodium-Ion Batteries","authors":"Jianbao Mei ,&nbsp;Bei Li ,&nbsp;Shu Zhang ,&nbsp;Dongdong Xiao ,&nbsp;Pu Hu ,&nbsp;Geng Zhang","doi":"10.3866/PKU.WHXB202407023","DOIUrl":"10.3866/PKU.WHXB202407023","url":null,"abstract":"<div><div>Sodium-ion batteries (SIBs) are widely studied for energy storage applications, but achieving cathode materials with balanced high energy density, stability, and fast charge/discharge performance remains a key challenge. In this study, we successfully synthesized a series of NASICON-type Na_{3.5−<em>x</em>}Mn_0.5V_{1.5−<em>x</em>}Zr_<em>x</em>(PO₄)₃/C, incorporating Mn, V, and Zr to investigate their impact on electrochemical performance. By introducing Zr alongside Mn and V, we developed a novel strategy to activate V⁴⁺/V⁵⁺ redox reactions, achieving high energy density. Moreover, this substitution promotes Na-ion migration by widening the migration pathways and generating additional Na vacancies, which greatly enhances electrode reaction kinetics and boosts overall performance. Na_3.4Mn_0.5V_1.4Zr_0.1(PO₄)₃/C demonstrates superior stability, retaining 90% of its capacity after 800 cycles, and delivers high-rate performance (84 mAh∙g⁻¹ at 20<em>C</em>), significantly outperforming pristine Na_3.5Mn_0.5V_1.5(PO₄)₃/C. These advancements highlight a potential approach for developing efficient and sustainable SIBs.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (80KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"40 12","pages":"Article 2407023"},"PeriodicalIF":10.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143128695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transition Metal Oxides/Chalcogenides for Electrochemical Oxygen Reduction into Hydrogen Peroxides","authors":"Xiaofeng Zhu ,&nbsp;Bingbing Xiao ,&nbsp;Jiaxin Su ,&nbsp;Shuai Wang ,&nbsp;Qingran Zhang ,&nbsp;Jun Wang","doi":"10.3866/PKU.WHXB202407005","DOIUrl":"10.3866/PKU.WHXB202407005","url":null,"abstract":"<div><div>Electrochemical oxygen reduction reaction <em>via</em> the two-electron pathway (2e-ORR) is becoming a promising and sustainable approach to producing hydrogen peroxide (H₂O₂) without significant carbon footprints. To achieve better performance, most of the recent progress and investigations have focused on developing novel carbon-based electrocatalysts. Nevertheless, the sophisticated preparations, decreased selectivity and undefined active sites of carbon-based catalysts have been generally acknowledged and criticized. To this end, transition metal oxides and chalcogenides have increasingly emerged for 2e-ORR, due to their catalytic stability and tunable microstructure. Here, the development of metal oxides and chalcogenides for O₂-to-H₂O₂ conversion is prospectively reviewed. By summarizing previous theoretical and experimental efforts, their diversity and outstanding catalytic activity are firstly provided. Meanwhile, the topological and chemical factors influencing 2e-ORR selectivity of the metal oxides/chalcogenides are systematically elucidated, including morphology, phase structures, doping and defects engineering. Thus, emphasizing the influence on the binding of ORR intermediates, the active sites and the underlying mechanism is highlighted. Finally, future opportunities and challenges in designing metal oxides/chalcogenides-based catalysts for H₂O₂ electro-synthesis are outlined. The present review provides insights and fundamentals of metal oxides/chalcogenides as 2e-ORR catalysts, promoting their practical application in the energy-related industry.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (140KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"40 12","pages":"Article 2407005"},"PeriodicalIF":10.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143128038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into the Development of Copper-based Photocatalysts for CO2 Conversion","authors":"Zhiquan Zhang ,&nbsp;Baker Rhimi ,&nbsp;Zheyang Liu ,&nbsp;Min Zhou ,&nbsp;Guowei Deng ,&nbsp;Wei Wei ,&nbsp;Liang Mao ,&nbsp;Huaming Li ,&nbsp;Zhifeng Jiang","doi":"10.3866/PKU.WHXB202406029","DOIUrl":"10.3866/PKU.WHXB202406029","url":null,"abstract":"<div><div>Utilizing sunlight as a renewable energy source, photocatalysis offers a potential solution to global warming and energy shortages by converting CO₂ into useful solar fuels, including CO, CH₄, CH₃OH, and C₂H₅OH. Among the various formulations investigated, copper-based photocatalysts stand out as particularly appealing for CO₂ conversion due to their cost-effectiveness and higher abundance in comparison to catalysts based on precious metals. This literature review provides a thorough summary of the latest developments in copper-based photocatalysts used for CO₂ reduction reactions, including metallic copper, copper oxide, and cuprous oxide photocatalysts. The review also provides a categorical summary of the CO₂ reduction products and a detailed categorical discussion of the means of modulation and modification of each copper-based catalyst. Finally, this review highlights the existing challenges and proposes future research directions in the development of copper-based photocatalysts for CO₂ reduction, focusing on boosting energy utilization and improving product formation rates.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (70KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"40 12","pages":"Article 2406029"},"PeriodicalIF":10.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143128682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modulating NH2 Lewis Basicity in CTF-NH2 through Donor-Acceptor Groups for Optimizing Photocatalytic Water Splitting","authors":"Zhao Lu ,&nbsp;Hu Lv ,&nbsp;Qinzhuang Liu ,&nbsp;Zhongliao Wang","doi":"10.3866/PKU.WHXB202405005","DOIUrl":"10.3866/PKU.WHXB202405005","url":null,"abstract":"<div><div>Photocatalytic water splitting (PWS) provides an optimal approach for the sustainable production of green hydrogen. NH₂-modified covalent triazine frameworks (CTFs-NH₂) hold potential in PWS due to robust light uptake, optimal charge separation, and considerable redox potential. However, the high surface reaction barriers hinder the efficiency of PWS owing to the conversion difficulty of intermediate products. Modulating the Lewis basicity of NH₂ on CTFs offers a feasible route for addressing this challenge. In this work, electron-donating ethyl (C₂H₅) and electron-withdrawing 5-fluoroethyl groups (C₂F₅) are introduced at the <em>para</em> position of amine groups, producing C₂H₅-CTF-NH₂ and C₂F₅-CTF-NH₂, to adjust the Lewis basicity of CTF-NH₂. Through DFT calculations, the optical properties, excited states, electronic structures, dipole moments, and surface reaction processes of the CTF-NH₂, C₂H₅-CTF-NH₂ and C₂F₅-CTF-NH₂ are simulated. The results indicate that the electron-withdrawing C₂F₅ group can decrease the electron density and Lewis basicity on NH₂, thereby lowering the energy barriers for hydrogen and oxygen evolution reactions, effectively ameliorating the PWS efficiency of CTF-NH₂. This work unveils an innovative approach for donor-acceptor-regulated CTFs for the application of PWS.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (76KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"40 12","pages":"Article 2405005"},"PeriodicalIF":10.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143128699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defective ultrathin two-dimensional materials for photo-/electrocatalytic CO2 reduction: Fundamentals and perspectives","authors":"Runhua Chen ,&nbsp;Qiong Wu ,&nbsp;Jingchen Luo ,&nbsp;Xiaolong Zu ,&nbsp;Shan Zhu ,&nbsp;Yongfu Sun","doi":"10.3866/PKU.WHXB202308052","DOIUrl":"10.3866/PKU.WHXB202308052","url":null,"abstract":"<div><div>Photo-/electrocatalytic reduction of carbon dioxide (CO₂) to carbon-based fuel molecules driven by renewable energy is an attractive strategy for resource regeneration and energy storage, especially for achieving carbon peak and carbon-neutral goals. However, the high thermodynamic stability and chemical inertness of CO₂ molecules make the conversion efficiency and selectivity of reduction products very low, which further hinders its application. In addition, different CO₂ reduction products have similar reduction potential and usually face severe hydrogen evolution competition under aqueous system conditions, which makes the selectivity of specific reduction products unable to be effectively controlled. To overcome these bottlenecks, researchers have been working for many years to develop efficient photo/electrocatalysts to enhance the activity and product selectivity of CO₂ reduction. Thanks to the ultrathin thickness and large specific surface area, ultrathin two-dimensional materials possess highly active sites with high density and high uniformity, which can effectively regulate the key thermodynamic and kinetic factors of CO₂ photo-/electroreduction reactions. As a typical two-dimensional material, the defective ultrathin two-dimensional materials can provide a large number of electron-rich catalytic sites to efficiently adsorb and highly activate CO₂ molecules, which can effectively reduce the reaction barrier, thus accelerating CO₂ reduction and enhancing product selectivity. Moreover, the local atomic and electronic structure of the defects can effectively stabilize the intermediate of CO₂ reduction reactions, thus further optimizing the kinetics of CO₂ reduction reactions. Furthermore, the surface defects are beneficial to the mass and electron transfer in the catalytic process, thus further improving the catalytic activity of the catalysts. In this review, we overview the latest research progress in CO₂ photo-/electrocatalytic reduction using defective ultrathin two-dimensional materials, including the controllable synthesis and fine structure characterization of defective ultrathin two-dimensional materials; the modulation effect of defect structure on the local atomic and electronic structure; the advantages of defective ultrathin two-dimensional materials for CO₂ reduction. We also discuss the challenges and opportunities of defective ultrathin two-dimensional materials for future development of CO₂ photo-/electrocatalytic reduction. It is expected that this review will provide a guide for designing highly efficient CO₂ reduction systems.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 3","pages":"Article 100019"},"PeriodicalIF":10.8,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in iron-based heterostructure anode materials for sodium ion batteries","authors":"Yu Guo,&nbsp;Zhiwei Huang,&nbsp;Yuqing Hu,&nbsp;Junzhe Li,&nbsp;Jie Xu","doi":"10.3866/PKU.WHXB202311015","DOIUrl":"10.3866/PKU.WHXB202311015","url":null,"abstract":"<div><div>Sodium ion batteries (SIBs), characterized by high energy density, prolonged cycle life, and cost-effectiveness, have garnered substantial attention as scalable energy storage devices. However, the primary challenge facing SIBs is the identification of suitable electrode materials capable of accommodating sodium ions reversibly and sustainably. To transition SIBs from the experimental stage to practical applications, the identification of electrode materials exhibiting satisfactory electrochemical performance is imperative. Iron (Fe), as a widely utilized metal element, exhibits considerable potential for application as anode materials in SIBs due to its abundance, cost-effectiveness, and high specific capacity. Nonetheless, Fe-based electrode materials suffer from low conductivity and significant volume changes during charge and discharge processes, leading to poor rate performance and cyclic stability, thereby restricting their widespread application in SIBs. Various modification strategies, such as nanosizing electrode materials, heteroatom doping, heterostructure construction, and combination with fast ion conductors, have been reported to address these challenges. Importantly, engineering Fe-based electrode materials with heterogeneous structures, integrating two or more components <em>via</em> van der Waals forces or chemical bonds, is crucial for creating intricate heterogeneous interfaces. These interfaces generate self-built electric fields that expedite ion transport, enhance reaction kinetics, and mitigate structural damage due to volume changes during cycling, thereby significantly improving the overall electrochemical performance of Fe-based materials in SIBs. Given the rapid advancements in the utilization of Fe-based materials in SIBs, a comprehensive review is necessary to not only summarize recent progress but also provide insight and guidance on their application in SIBs. This review offers a detailed overview of the research progress on Fe-based anode materials with heterostructure in SIBs. Emphasis is placed on synthesis methods, characterization techniques, and energy storage mechanisms of heterostructure Fe-based electrode materials. Additionally, the sodium ion storage characteristics, modification strategies, and strengthening mechanisms of Fe-based materials, including Fe-based oxides, sulfides, phosphides, selenides, as well as dual-anion Fe-based anode materials, are summarized. Finally, the remaining challenges and future development prospects of Fe-based heterostructure anode materials are discussed, aiming to promote the rapid development and practical application of these materials for SIBs.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 3","pages":"Article 100022"},"PeriodicalIF":10.8,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Progress on self-powered photodetectors based on low-dimensional materials","authors":"Yuhang Zhang ,&nbsp;Weiwei Zhao ,&nbsp;Hongwei Liu ,&nbsp;Junpeng Lü","doi":"10.3866/PKU.WHXB202310004","DOIUrl":"10.3866/PKU.WHXB202310004","url":null,"abstract":"&lt;div&gt;&lt;div&gt;In recent years, there has been a growing interest in self-powered photodetectors, which can detect light without needing an external power supply. This unique feature makes them highly attractive for addressing the current energy shortage and the future demand for miniaturized devices. Among various design approaches for self-powered photodetectors, the use of low-dimensional materials holds great promise. Low-dimensional nanomaterials offer several advantages for self-powered photodetectors. They can be assembled into large area ordered structures such as ultra-thin layers, nanowire arrays, and quantum dot superlattices. Additionally, their atomic-level thickness provides a large specific surface area and facilitates integration with other materials. By combining different low-dimensional materials with complementary enhancements in bandgap, carrier transport rate, and light collection efficiency, the performance of self-powered photodetectors can be significantly improved. These devices can be scaled down to micro-nano levels while taking advantage of the adjustable bandgap, wide spectral response, high carrier migration rate, and high light absorption efficiency offered by low-dimensional materials. This article introduces the performance metrics of photodetectors, including photoresponsivity, noise equivalent power, detectivity, and response time. It then discusses the latest advancements in self-powered photodetectors based on 0D, 1D, and 2D materials. In the section on 0D material self-powered photodetectors, the device structure design using 0D materials as heterojunction components and doping materials is presented, highlighting their respective advantages. The section on 1D material self-powered photodetectors summarizes three main device structure types: planar, vertical, and core-shell, along with their individual advantages. The focus is placed on the content related to 2D material self-powered photodetectors. Graphene, transition metal dichalcogenides (TMDs), and black phosphorus are the most widely used 2D materials, and their preparation methods and the latest advancements in self-powered photodetectors are discussed. The controllable diversity in electrical properties resulting from interlayer interactions in two-dimensional materials offers great potential for new principles and multifunctional electronic devices. Finally, the article summarizes and discusses the key challenges and future development directions for self-powered photodetectors based on low-dimensional materials. In summary, the utilization of low-dimensional materials in self-powered photodetectors presents a promising direction for the development of advanced optoelectronic devices. By utilizing the unique properties of these materials, such as their atomic-level thickness, large specific surface area, and controllable electrical properties, significant advancements can be made in the field of self-powered photodetectors. The challenges associated with","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 3","pages":"Article 100020"},"PeriodicalIF":10.8,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Progress and perspective of perovskite thin single crystal photodetectors","authors":"Yao Ma,&nbsp;Xin Zhao,&nbsp;Hongxu Chen,&nbsp;Wei Wei,&nbsp;Liang Shen","doi":"10.3866/PKU.WHXB202309045","DOIUrl":"10.3866/PKU.WHXB202309045","url":null,"abstract":"<div><div>Metal halide perovskites show immense promise in photodetection applications, having been employed in the research of photodiodes, photoconductors, and phototransistors. However, the majority of current photodetectors utilizing perovskite materials rely on polycrystalline thin films, and the presence of grain boundaries and defects hinders their photoelectric performance, creating a bottleneck in further advancements. To address this issue, researchers have employed techniques such as inverse temperature crystallization (ITC) and anti-solvent vapor-assisted crystallization (AVC) to synthesize various perovskite single crystals. Bulk single crystal perovskite structures are advantageous due to their lack of grain boundaries, resulting in lower dark current and noise in photodetectors, thereby enhancing their weak light detection capabilities. Additionally, the diminished presence of grain boundaries extends the lifetime of photo-generated carriers, providing a foundation for improved detector performance. However, due to the excellent optical absorption coefficient of perovskites, the excessive thickness of bulk single crystals can only increase the probability of carrier recombination, impacting the photodetector's performance. Consequently, perovskite thin single crystal materials prepared by controlling longitudinal size have garnered significant interest in novel detector research. Various techniques, such as space-confined method, surface tension-assisted method, and vapor phase epitaxy, have been proposed to growth thin single crystals with controllable thickness. These methods have been continually optimized to enhance crystal quality. Thin single crystal perovskites not only enhance photodetector performance but also hold potential for large-area single crystal production, supporting the development of photodetector imaging arrays. This paper outlines the fundamental principles behind perovskite single crystal growth, introduces various technological approaches developed for thin perovskite single crystal growth, and analyzes the resulting materials from different growth methods. It further reviews notable studies in the realm of perovskite thin single crystal photodetectors for different device types. Finally, the paper discusses current challenges and issues in this field while offering insights into potential future directions of development.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 4","pages":"Article 100030"},"PeriodicalIF":10.8,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}