The Journal of Physical Chemistry C最新文献

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A Portable Data Set for Borophene Growth Modeling with Reactive Neural Network Potentials 反应性神经网络电位Borophene生长建模的便携式数据集
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-07 DOI: 10.1021/acs.jpcc.5c04912
Colin Bousige*, , , Anouar-Akacha Delenda, , , Abdul-Rahman Allouche, , and , Pierre Mignon, 
{"title":"A Portable Data Set for Borophene Growth Modeling with Reactive Neural Network Potentials","authors":"Colin Bousige*,&nbsp;, ,&nbsp;Anouar-Akacha Delenda,&nbsp;, ,&nbsp;Abdul-Rahman Allouche,&nbsp;, and ,&nbsp;Pierre Mignon,&nbsp;","doi":"10.1021/acs.jpcc.5c04912","DOIUrl":"10.1021/acs.jpcc.5c04912","url":null,"abstract":"<p >In this study, we develop and validate machine learned interaction potentials (MLIPs) for reactive simulation of borophene on metal substrates. A versatile training data set is constructed to accurately represent both extended and reactive borophene structures. It should be portable to train any MLIP architecture. Indeed, three generations of MLIPs, namely n2p2, DeePMD and NNMP, are trained and validated against density functional theory (DFT) calculations. Our results demonstrate the capability of the MLIPs to accurately reproduce DFT-calculated structures, energies, and forces. We finally show that it is possible to use these MLIPs to simulate the growth of borophene on a silver substrate.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18760–18771"},"PeriodicalIF":3.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced Broadband Photodetectors Based on Cu-Doped Cs2AgBiBr6 Nanocrystals via Localized States Driving Improved Device Performance 基于cu掺杂Cs2AgBiBr6纳米晶体的增强型宽带光电探测器的局域态驱动改进器件性能
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-07 DOI: 10.1021/acs.jpcc.5c05046
Sireesha Lavadiya, , , Chinmay Barman, , , Aakash Singh, , and , Sai Santosh Kumar Raavi*, 
{"title":"Enhanced Broadband Photodetectors Based on Cu-Doped Cs2AgBiBr6 Nanocrystals via Localized States Driving Improved Device Performance","authors":"Sireesha Lavadiya,&nbsp;, ,&nbsp;Chinmay Barman,&nbsp;, ,&nbsp;Aakash Singh,&nbsp;, and ,&nbsp;Sai Santosh Kumar Raavi*,&nbsp;","doi":"10.1021/acs.jpcc.5c05046","DOIUrl":"10.1021/acs.jpcc.5c05046","url":null,"abstract":"<p >Lead-free halide double perovskite Cs<sub>2</sub>AgBiBr<sub>6</sub> (CABB) has emerged as a highly promising material for photodetector applications owing to its environmental stability and tunable optoelectronic properties. This study presents a comprehensive investigation into the effects of Cu doping in CABB colloidal nanocrystals (NCs) to enhance broadband photodetection by extending absorption into the near-infrared (NIR) region and optimizing both structural and optoelectronic features. Transmission electron microscopy (TEM) confirms that Cu incorporation preserves the cubic crystal phase while reducing the crystallite size, indicating improved structural order. Optical characterization reveals that Cu doping introduces shallow localized states, which broaden both absorption and emission spectra, reduce photoluminescence (PL) intensity, and shorten carrier lifetimes, signifying enhanced charge transfer dynamics. Additionally, the exciton binding energy decreases from 96 to 70 meV, facilitating more efficient charge separation. Photodetectors fabricated with Cu-doped CABB NCs exhibit an increased open-circuit voltage (0.04 to 0.24 V) due to bandgap tuning and improved charge carrier dynamics. These devices demonstrate significant performance gains, with on/off ratio, responsivity, and detectivity enhanced by 203, 290, and 2300%, respectively, compared to undoped NCs. This work establishes Cu-doped CABB as a high-performance platform for broadband photodetection, highlighting localized-state engineering and enhanced charge transfer as key factors driving improved device performance and spectral sensitivity.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18451–18461"},"PeriodicalIF":3.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deciphering the Key Factors Governing Mn4+ Zero-Phonon Line Characteristics via Machine Learning Decoding of Host–Mn4+ Interactions 通过主机- Mn4+相互作用的机器学习解码来破译控制Mn4+零声子线特性的关键因素
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-07 DOI: 10.1021/acs.jpcc.5c05715
Jinxin Wang, , , Yuanyuan Dou, , , Jiahua Zhang, , , Mingyue Chen, , , Zhen Song*, , and , Quanlin Liu*, 
{"title":"Deciphering the Key Factors Governing Mn4+ Zero-Phonon Line Characteristics via Machine Learning Decoding of Host–Mn4+ Interactions","authors":"Jinxin Wang,&nbsp;, ,&nbsp;Yuanyuan Dou,&nbsp;, ,&nbsp;Jiahua Zhang,&nbsp;, ,&nbsp;Mingyue Chen,&nbsp;, ,&nbsp;Zhen Song*,&nbsp;, and ,&nbsp;Quanlin Liu*,&nbsp;","doi":"10.1021/acs.jpcc.5c05715","DOIUrl":"10.1021/acs.jpcc.5c05715","url":null,"abstract":"<p >Achieving wide color gamut in liquid crystal displays relies critically on narrow-band red-emitting phosphors. Mn<sup>4+</sup>-activated phosphors are promising candidates due to their sharp emission, yet modulating their zero-phonon line wavelengths remains challenging. This study employs machine learning to decode host–Mn<sup>4+</sup> interactions across 65 distinct hosts (42 fluorides, 6 fluoroxides, 17 oxides). By extracting 29 structural descriptors and leveraging a random forest regression model, we identify nine key features governing ZPL wavelengths. Electronegativity-related parameters dominate (77.83% cumulative importance), while geometric factors (bond angles, distances) also contribute significantly. The model achieves high accuracy (test MAE = 4.133 nm, <i>R</i><sup>2</sup> = 0.928), revealing that high electronegativity in secondary-coordination ions enhances Mn–ligand covalency, reducing the E<sub>g</sub> → <sup>4</sup>A<sub>2g</sub> transition energy and redshifting the emission peak wavelengths. This work identifies key design principles for Mn<sup>4+</sup>-activated fluoride, oxide, and oxyfluoride phosphors, enabling a targeted strategy for discovering next-generation narrow-band red emitters.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18571–18577"},"PeriodicalIF":3.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantum-Mechanical Arrow-Pushing: Unraveling the Electron Flow in Propane ODH on V4O10 量子力学推箭:揭示V4O10上丙烷ODH中的电子流
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-07 DOI: 10.1021/acs.jpcc.5c04872
Hong-Wei Lin, , , Chia-Jung Yang, , , Ting-You Wu, , and , Mu-Jeng Cheng*, 
{"title":"Quantum-Mechanical Arrow-Pushing: Unraveling the Electron Flow in Propane ODH on V4O10","authors":"Hong-Wei Lin,&nbsp;, ,&nbsp;Chia-Jung Yang,&nbsp;, ,&nbsp;Ting-You Wu,&nbsp;, and ,&nbsp;Mu-Jeng Cheng*,&nbsp;","doi":"10.1021/acs.jpcc.5c04872","DOIUrl":"10.1021/acs.jpcc.5c04872","url":null,"abstract":"<p >Arrow-pushing diagrams have historically served as foundational visual tools for representing electron movement in chemical reactions. Recent methodological advances, particularly those involving intrinsic bond orbital (IBO) analysis, allow these diagrams to be constructed rigorously from quantum mechanical (QM) calculations. Despite these advances, most applications have been limited to individual steps or small portions of reaction mechanisms. Propane oxidative dehydrogenation (ODH) to propene on vanadium oxide is a catalytically significant transformation, for which an orbital-level understanding can deepen mechanistic insight. Here, we use density functional theory combined with IBO analysis to generate a step-by-step, QM-derived arrow-pushing diagram for the entire propane ODH catalytic cycle on a V<sub>4</sub>O<sub>10</sub> cluster as a model for vanadium oxide. Our study reveals that electronic changes are confined to a small region of the catalyst, specifically a single V = O bond and one of its bridging oxygen atoms. Furthermore, the V–O bonds in this region alternate between σ and dative character to facilitate electron flow. Each propane molecule undergoes two hydrogen removals─first by hydrogen atom transfer and then by proton transfer. Additionally, we distinguish two mechanistically different isopropyl radical-trapping events: concerted carbocation-coupled electron transfer and carbon radical transfer. This work highlights the value of QM-derived arrow-pushing diagrams as powerful tools for dissecting complex catalytic processes at the orbital level.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18503–18512"},"PeriodicalIF":3.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.jpcc.5c04872","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plasma Electrochemical Synthesis of Composition Tunable Au–Ag Bimetallic Nanoparticles 组成可调金银双金属纳米颗粒的等离子体电化学合成
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-07 DOI: 10.1021/acs.jpcc.5c05775
Jae Hyun Nam, , , Anil Timilsina, , and , Peter J. Bruggeman*, 
{"title":"Plasma Electrochemical Synthesis of Composition Tunable Au–Ag Bimetallic Nanoparticles","authors":"Jae Hyun Nam,&nbsp;, ,&nbsp;Anil Timilsina,&nbsp;, and ,&nbsp;Peter J. Bruggeman*,&nbsp;","doi":"10.1021/acs.jpcc.5c05775","DOIUrl":"10.1021/acs.jpcc.5c05775","url":null,"abstract":"<p >The synthesis of bimetallic nanoparticles (BNPs) with a controlled structure and composition is crucial for advancing their applications in catalysis, biosensing, and nanoenergy. This study introduces a surfactant- and ligand-free one-pot synthesis of Au–Ag BNPs in aqueous solutions using pulsed plasma-driven solution electrochemistry (PDSE). PDSE-enabled structural modulation of Au–Ag BNPs was achieved simply by tuning a precursor solution pH, with acidic conditions favoring Au–Ag core–shell configurations, neutral conditions promoting homogeneous alloys, and basic conditions enabling Ag–Au core–shell structure formation. Additionally, we demonstrated composition control through the introduction of oxygen in the feed gas and voltage pulse width modulation, leveraging reactive oxygen species to selectively oxidize Ag, thereby tuning the Ag and Au ratios in the synthesized BNPs. Our one-pot and fast synthesis approach eliminates the need for surfactants/ligands and reducing agents, making it a nontoxic and cost-effective alternative to traditional wet-chemical synthesis methods. Findings from our contribution can offer new insights into the fundamental mechanisms of BNP formation in PDSE and pave the way for scalable and tunable BNPs synthesis for diverse technological applications.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18586–18599"},"PeriodicalIF":3.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural and Compositional Changes of Graphene Oxide-Based Nanomaterials during Hydrogen Storage 氧化石墨烯基纳米材料储氢过程中结构和成分的变化
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-07 DOI: 10.1021/acs.jpcc.5c05215
Ruzhen Xu, , , Jonathan Quintal, , , Emmanuel Boateng, , and , Aicheng Chen*, 
{"title":"Structural and Compositional Changes of Graphene Oxide-Based Nanomaterials during Hydrogen Storage","authors":"Ruzhen Xu,&nbsp;, ,&nbsp;Jonathan Quintal,&nbsp;, ,&nbsp;Emmanuel Boateng,&nbsp;, and ,&nbsp;Aicheng Chen*,&nbsp;","doi":"10.1021/acs.jpcc.5c05215","DOIUrl":"10.1021/acs.jpcc.5c05215","url":null,"abstract":"<p >This study explores the hydrogen storage performance of graphene oxide (GO), reduced graphene oxide, and interconnected reduced graphene oxide over a pressure range of 0–50 bar and temperatures of 30, 50, 75, and 100 °C using a gravimetric measurement system. Among those nanomaterials, GO exhibited the highest hydrogen storage capacity of 2.35 wt % at 75 °C and 50 bar. Comprehensive characterization, including electrochemical techniques, scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction, was carried out to investigate their structural and compositional transformations before and after hydrogen uptake and release. The results reveal that selective reduction and removal of some of the carbonyl (C=O), epoxy (C–O–C), and hydroxyl (C–OH) groups of GO-based nanomaterials occurred during the hydrogen storage process. The hydrogen storage capacities of GO-based nanomaterials were increased with the increase of temperature, ranging from 30 to 100 °C, likely due to the thermal and pressure-induced realignment and expansion of graphene interlayer spacing. These findings highlight the dynamic nature of GO-based nanomaterials under hydrogen storage conditions and provide some insights into their structural evolution and performance optimization.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18462–18471"},"PeriodicalIF":3.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Raman Monitoring of Pressure-Induced Configurational Transition of Iodine Confined within Metal–Organic Frameworks 金属-有机框架内碘压力诱导构型转变的拉曼监测
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-07 DOI: 10.1021/acs.jpcc.5c05761
Ning Huang, , , Shuang Liu, , , Dedi Liu*, , , Dapeng Dong, , , Benkang Liu, , , Ran Liu, , , Zhenyi Zhang, , , Jinhai Niu, , , Zhenghua Li*, , and , Bingbing Liu, 
{"title":"Raman Monitoring of Pressure-Induced Configurational Transition of Iodine Confined within Metal–Organic Frameworks","authors":"Ning Huang,&nbsp;, ,&nbsp;Shuang Liu,&nbsp;, ,&nbsp;Dedi Liu*,&nbsp;, ,&nbsp;Dapeng Dong,&nbsp;, ,&nbsp;Benkang Liu,&nbsp;, ,&nbsp;Ran Liu,&nbsp;, ,&nbsp;Zhenyi Zhang,&nbsp;, ,&nbsp;Jinhai Niu,&nbsp;, ,&nbsp;Zhenghua Li*,&nbsp;, and ,&nbsp;Bingbing Liu,&nbsp;","doi":"10.1021/acs.jpcc.5c05761","DOIUrl":"10.1021/acs.jpcc.5c05761","url":null,"abstract":"<p >Metal–organic frameworks (MOFs) with porous architectures serve as critical hosts for iodine storage, demonstrating significant potential in diverse application fields. The confinement effects of the MOF pore geometries profoundly influence the structural dynamics and physicochemical properties of encapsulated iodine species. This study systematically examines the influence of the MOF pore geometries on the structural dynamics of confined iodine molecules. Extended polyiodide chains (I<sub>5</sub><sup>–</sup> or (I<sub>2</sub>)<sub><i>n</i></sub>) stabilize in MOF-177’s one-dimensional uniform channels, while discrete I<sub>3</sub><sup>–</sup> anions localize within MIL-101(Cr)’s cage-like mesoporous cavities. <i>In situ</i> high-pressure Raman spectroscopy reveals pressure-induced structural evolution mechanisms of iodine polymers. Hydrostatic pressure deforms the uniform one-dimensional channels of MOF-177, leading to fragmentation of the confined polyiodide chains, which reconfigure upon pressure release as the framework recovers. In contrast, MIL-101(Cr)’s reversible structural transitions under pressure induce I<sub>3</sub><sup>–</sup> anions into asymmetric configurations, even forming bulk iodine clusters. This work highlights the critical role of MOF pore structures in dictating confined iodine configurations and elucidates synergistic host–guest interactions under pressure. This study reveals the crucial role of MOF pore structure in determining confined iodine configurations and elucidates the mechanism of host–guest synergistic interactions under pressure, providing key theoretical guidance for optimizing MOF-based iodine capture materials.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18578–18585"},"PeriodicalIF":3.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Delving into the Correlation between Magnetic and Lattice Degrees of Freedom from Magnetocaloric and Magnetovolume Effects in Lu2Fe17 Ribbons 从Lu2Fe17带的磁热和磁体积效应探讨磁性和晶格自由度之间的关系
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-07 DOI: 10.1021/acs.jpcc.5c04207
J. L. Garrido Álvarez, , , M. L. Arreguín-Hernández, , , C. Echevarría-Bonet, , , Pedro Gorria*, , , I. Puente-Orench, , , F. Fauth, , , Jesús A. Blanco, , , J. L. Sánchez Llamazares*, , and , Pablo Álvarez-Alonso, 
{"title":"Delving into the Correlation between Magnetic and Lattice Degrees of Freedom from Magnetocaloric and Magnetovolume Effects in Lu2Fe17 Ribbons","authors":"J. L. Garrido Álvarez,&nbsp;, ,&nbsp;M. L. Arreguín-Hernández,&nbsp;, ,&nbsp;C. Echevarría-Bonet,&nbsp;, ,&nbsp;Pedro Gorria*,&nbsp;, ,&nbsp;I. Puente-Orench,&nbsp;, ,&nbsp;F. Fauth,&nbsp;, ,&nbsp;Jesús A. Blanco,&nbsp;, ,&nbsp;J. L. Sánchez Llamazares*,&nbsp;, and ,&nbsp;Pablo Álvarez-Alonso,&nbsp;","doi":"10.1021/acs.jpcc.5c04207","DOIUrl":"10.1021/acs.jpcc.5c04207","url":null,"abstract":"<p >Nowadays, R<sub>2</sub>Fe<sub>17</sub> (R = rare earth) materials with zero (ZTE) or negative (NTE) thermal expansion are of significant interest in advanced applications, especially for intermediate performance low-cost magnets. Lu<sub>2</sub>Fe<sub>17</sub> ribbon flakes were fabricated by means of the melt-spinning technique, while a bulk sample was synthesized by arc melting and long-term annealing as a reference alloy. Both the as-cast ribbons and the bulk sample adopt a Th<sub>2</sub>Ni<sub>17</sub>-type hexagonal crystal structure. The anomalous temperature dependence of the lattice parameters in the ribbons confirms the existence of strong magnetovolume effects, characterized by NTE and ZTE along the <i>c</i> and <i>a</i> crystallographic axis, respectively. In addition, magnetic measurements show two magnetic phase transitions, from paramagnetic to helimagnetic and from helimagnetic to a fan structure, with transition temperatures differing between ribbon (<i>T</i><sub>HEL</sub> = 276 K and <i>T</i><sub>FAN</sub> = 252 K) and bulk (273 and 257 K) samples, respectively. These differences can be attributed to variations in the exchange interactions caused by slightly different interatomic distances between the Fe atoms. The isothermal entropy change versus temperature curves, Δ<i>S</i><sub>M</sub>(<i>T</i>), measured under low magnetic field values (up to 150 mT), provide clear evidence of the existence of a double peak, thus confirming the two successive magnetic phase transitions that occur in Lu<sub>2</sub>Fe<sub>17</sub> ribbon flakes.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18685–18694"},"PeriodicalIF":3.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.jpcc.5c04207","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electric Field-Enhanced Nonlinear Optical Responses in n = 2 Ruddlesden–Popper Phase Perovskites 电场增强n = 2 Ruddlesden-Popper相钙钛矿的非线性光学响应
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-06 DOI: 10.1021/acs.jpcc.5c04657
Jamal El-Hamouchi*, , , Pınar Başer, , , Ayoub Ed-Dahmouny, , , Abdelghani Fakkahi, , , Mohammed Jaouane, , and , Ahmed Sali, 
{"title":"Electric Field-Enhanced Nonlinear Optical Responses in n = 2 Ruddlesden–Popper Phase Perovskites","authors":"Jamal El-Hamouchi*,&nbsp;, ,&nbsp;Pınar Başer,&nbsp;, ,&nbsp;Ayoub Ed-Dahmouny,&nbsp;, ,&nbsp;Abdelghani Fakkahi,&nbsp;, ,&nbsp;Mohammed Jaouane,&nbsp;, and ,&nbsp;Ahmed Sali,&nbsp;","doi":"10.1021/acs.jpcc.5c04657","DOIUrl":"10.1021/acs.jpcc.5c04657","url":null,"abstract":"<p >In this work, we investigate nonlinear optical rectification (NOR), second-harmonic generation (SHG), and third-harmonic generation (THG) in an <b><i>n</i></b> = 2 Ruddlesden–Popper phase hybrid perovskite (RPP-HP) quantum well (QW) under the effect of an external electric field (F) applied along the confinement direction. These nonlinear optical (NLO) properties are analyzed using the compact density matrix formalism. The electronic subband structure, comprising discrete energy levels and associated wave functions, is computed by numerically solving the one-dimensional time-independent Schrödinger equation using the finite element method (FEM) within the framework of the effective mass approximation (EMA). Our results reveal a pronounced field dependence of the NLO response. The intensities of NOR, SHG, and THG increase markedly with rising F, driven by enhanced intersubband transition probabilities and asymmetry-induced nonlinearities. Moreover, the resonant peaks of these NLO processes exhibit noticeable blue shifts as the electric field increases, indicating stronger quantum confinement and larger intersubband separations. Notably, the observed behavior closely parallels that of conventional III–V semiconductor QWs such as <i>GaAs</i>. However, unlike III–V systems, RPP-HPs combine excellent nonlinear optical activity with the advantages of solution processability and low fabrication cost, making them a highly promising material platform for next-generation tunable optoelectronic and photonic devices.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18727–18736"},"PeriodicalIF":3.2,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Theoretical Approaches toward Designing Organic Molecule Infilling for n- and p-Type Single-Walled Carbon Nanotubes n型和p型单壁碳纳米管有机分子填充设计的理论方法
IF 3.2 3区 化学
The Journal of Physical Chemistry C Pub Date : 2025-10-06 DOI: 10.1021/acs.jpcc.5c05452
Weiqi Li, , , Tao Wen, , , Xu Li, , , Juexian Cao*, , and , Wangping Xu*, 
{"title":"Theoretical Approaches toward Designing Organic Molecule Infilling for n- and p-Type Single-Walled Carbon Nanotubes","authors":"Weiqi Li,&nbsp;, ,&nbsp;Tao Wen,&nbsp;, ,&nbsp;Xu Li,&nbsp;, ,&nbsp;Juexian Cao*,&nbsp;, and ,&nbsp;Wangping Xu*,&nbsp;","doi":"10.1021/acs.jpcc.5c05452","DOIUrl":"10.1021/acs.jpcc.5c05452","url":null,"abstract":"<p >Organic molecules (OMs) infilled into single-walled carbon nanotubes (SWCNTs) have been shown to facilitate carrier injection, enabling the construction of ultralow-power CNT-based electronic devices. However, systematic investigations into the fundamental physical mechanism of carrier injection and the regulation of charge transfer by OMs remain lacking. Therefore, we systematically explore the interaction mechanism and charge transfer regulation between OMs and SWCNTs through first-principles calculations. Our results reveal that carrier injection in SWCNTs is primarily governed by the relative alignment of the OMs’ ionization energy (IE) and electron affinity (EA) with respect to the Fermi level of the SWCNTs, thereby enabling stable carrier injection. Furthermore, for n-type SWCNTs, functional group engineering offers an effective means to tune the ionization energy of OMs, thus modulating charge transfer in the composite structures. Notably, we establish a strong linear correlation between the transferred charge and the energy difference between the ionization energy and the SWCNT Fermi level.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 41","pages":"18806–18812"},"PeriodicalIF":3.2,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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