Bo Xiao, Wenguang Zhang, Yuchen Xiong, Yihuai Huang, Changkai Huang, Yongxin Qian, Guibin Shen, Abdul Basit, Yubo Luo, Xin Li, Junyou Yang
{"title":"Energy Level Alignment Regulation and Carrier Management in Perovskite Solar Cells with Various Bandgaps Using Tailored Metal-Organic Frameworks","authors":"Bo Xiao, Wenguang Zhang, Yuchen Xiong, Yihuai Huang, Changkai Huang, Yongxin Qian, Guibin Shen, Abdul Basit, Yubo Luo, Xin Li, Junyou Yang","doi":"10.1002/adfm.202417293","DOIUrl":"https://doi.org/10.1002/adfm.202417293","url":null,"abstract":"The interface energy level alignment modulation and charge carrier transportation play an important role in the device performance of perovskite solar cells (PSCs). Herein, tailored hydrophobic metal-organic frameworks (MOFs) are employed as interfacial layers between perovskite absorbers and hole transport layers (HTLs). The tailored MOFs feature abundant carboxylic acid groups capable of bonding with Pb<sup>2+</sup> and organic cations, which can effectively passivate interface defects and suppress non-radiative recombination. Meanwhile, the MOF interfacial layers optimized the energy level alignment between the perovskite and the HTL, further facilitating carrier transportation. Specifically, the CsFAMA-based PSCs with a bandgap of 1.63 eV attained power conversion efficiency (PCE) of 23.06% upon modification with MOFs. Additionally, the MOFs-treated FA-based PSCs with a bandgap of 1.55 eV achieved a remarkable PCE of 24.81%, accompanied by an outstanding fill factor of 84.3% and a minimal open-circuit voltage loss of merely 0.386 V. Furthermore, the integration of the MOF interfacial layer substantially improved the moisture stability of the PSCs. The unencapsulated CsFAMA PSCs modified with MOFs retained 91.2% of their initial efficiency after 2500 h of aging under ambient conditions with 40% relative humidity (RH). This work underpins the commercialization of PSCs with diverse bandgaps.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"193 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Spleen-Targeted mRNA Nanoparticles for Modulating B Cell Hyperactivation in Rheumatoid Arthritis Therapy","authors":"Yanpeng Liu, Runnan Zhang, Nasha Qiu, Shuai Wang, Jian Chen, Xiao Xu, Jiajia Xiang, Youqing Shen","doi":"10.1002/adfm.202417101","DOIUrl":"https://doi.org/10.1002/adfm.202417101","url":null,"abstract":"Messenger RNA (mRNA)-based therapies have emerged as a revolutionary strategy for treating various diseases. In autoimmune diseases like rheumatoid arthritis (RA), targeted mRNA delivery provides a potential intervention to modulate immune responses. However, achieving specific and efficient in vivo modulation of immune regulators, such as the inhibitory Fc gamma receptor, FcγRIIB, on B cells remains challenging. In this study, lipid polymer nanoparticles (LPNs) formulated with AMB-POC18 lipidoid and poly(ethylene glycol)-<i>block</i>-polylactide (PEG-PLA) are engineered to deliver FcγRIIB mRNA (mFcγRIIB) specifically to splenic B cells for RA treatment. Protein corona analysis indicated that selective adsorption of complement C3 on the LPNs' surface facilitated their targeted delivery to the spleen, enhancing transfection efficiency in B cells following intravenous administration. In a collagen-induced arthritis mouse model, mFcγRIIB/LPNs effectively upregulated FcγRIIB expression in splenic B cells, significantly reducing autoimmune responses and alleviating RA symptoms. Further mechanistic studies elucidated that increased FcγRIIB expression suppressed B cell activation via the FcγRIIB/Lyn/SHP-1 signaling pathway. This work underscored the potential of the spleen-targeted mRNA delivery system for RA therapy, providing a precise and targeted approach to modulate B cell activity and mitigate autoimmune diseases.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"12 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ehud Bino, Lior Aram, Debojit Paul, Yuval Kadan, Daniel Clare, James B. Gilchrist, Nadav Elad, Assaf Gal
{"title":"The Role of Macromolecular Condensates in the Regulation of Intracellular Calcium Transport for Coccolith Formation","authors":"Ehud Bino, Lior Aram, Debojit Paul, Yuval Kadan, Daniel Clare, James B. Gilchrist, Nadav Elad, Assaf Gal","doi":"10.1002/adfm.202415344","DOIUrl":"https://doi.org/10.1002/adfm.202415344","url":null,"abstract":"Inorganic minerals that form via regulated biological processes exhibit remarkable properties. This is due to the involvement of macromolecules that control biomineralization. Even though the interactions of these biopolymers with solid mineral phases are intensely studied, not much is known about their involvement in the preceding steps of intracellular transport of the mineral building blocks. In this work, the model system of coccolith calcite crystallization is utilized to address the role of mineral-associated polysaccharides in the transport of calcium ions. State-of-the-art cryo-electron tomography is used to image in situ ion-rich dense phases in the wild-type and in two mutant strains, defected in coccolith production. The results show that the abundance and solubility of the calcium-rich condensates need to be finely tuned for proper crystallization. When the native macromolecular assemblage is compromised, calcium is still present in the calcifying fluid as a solute, but this is not sufficient for coccolith development. These results suggest that biomineralizing systems achieve superior regulation of crystallization due to the use of dense macromolecule-rich phases.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"99 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yeji Lee, Vineeth Kumar Bandari, Varun Paul Paliakkara, Sheila Monteiro Augusto, Rico Ehrler, Olav Hellwig, Sebastian Amann, Klaus Stöwe, Robert Thalheim, Oliver G. Schmidt
{"title":"Monolithic Integration of Printable PVDF-TrFE Piezoelectric Multifunctional Devices: From Sensing to Actuation","authors":"Yeji Lee, Vineeth Kumar Bandari, Varun Paul Paliakkara, Sheila Monteiro Augusto, Rico Ehrler, Olav Hellwig, Sebastian Amann, Klaus Stöwe, Robert Thalheim, Oliver G. Schmidt","doi":"10.1002/adfm.202413500","DOIUrl":"https://doi.org/10.1002/adfm.202413500","url":null,"abstract":"This study demonstrates the development of multifunctional printable piezoelectric actuators using PVDF-TrFE and PEDOT:PSS, capable of operating at low voltages and supporting a wide range of applications. By leveraging the high piezoelectric coefficient of PVDF-TrFE and the conductivity of PEDOT:PSS, the actuators exhibit stable performance with precise inkjet printing deposition and optimized waveform parameters. The fabrication process integrates inkjet printing and standard lithography, enabling monolithic integration for high-performance actuation and multifunctional sensing. The PVDF-TrFE-based actuators achieve low-voltage operation (as low as 50 V), efficient energy transfer, and mechanical stability. Enhancing the beta phase of PVDF-TrFE resulted in a deflection of ≈600 µm and vortex generation, crucial for lift in aerial robotic applications. Durability tests confirmed minimal performance degradation after 2,300 actuation cycles. Beyond mechanical deflection, the actuators exhibit sound detection and strain sensing capabilities. Experimental evaluations validated their ability to differentiate sound frequencies, detect muscle strain, and replicate bio-inspired flight dynamics. A preliminary proof of concept for a double-wing structure demonstrated lift generation at low voltages and resonant frequencies. The results indicate that these piezoelectric actuators are well-suited for miniaturized robotic applications, particularly in aerial locomotion and multifunctional sensing, opening new possibilities for innovations in micro-robotics, wearables, and aerial robotics.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"22 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yu-Chia Chen, Qi Jia, Yifei Yang, Yu-Han Huang, Deyuan Lyu, Thomas J. Peterson, Jian-Ping Wang
{"title":"Enhanced Voltage-Controlled Magnetic Anisotropy and Field-Free Magnetization Switching Achieved with High Work Function and Opposite Spin Hall Angles in W/Pt/W SOT Tri-Layers","authors":"Yu-Chia Chen, Qi Jia, Yifei Yang, Yu-Han Huang, Deyuan Lyu, Thomas J. Peterson, Jian-Ping Wang","doi":"10.1002/adfm.202416570","DOIUrl":"https://doi.org/10.1002/adfm.202416570","url":null,"abstract":"Voltage-Gated Spin-Orbit-Torque (VGSOT) Magnetic Random-Access Memory (MRAM) is a promising candidate for reducing writing energy and improving writing speed in emerging memory and in-memory computing applications. However, conventional Voltage Controlled Magnetic Anisotropy (VCMA) approaches are often inefficient due to the low VCMA coefficient at the CoFeB/MgO interface. Additionally, traditional heavy metal/perpendicular magnetic anisotropy (PMA) ferromagnet bilayers require an external magnetic field to overcome symmetry constraints and achieve deterministic SOT switching. Here, a novel and industry-compatible SOT underlayer for next-generation VGSOT MRAM by employing a composite heavy metal tri-layer with a high work function is presented. This approach achieves a VCMA coefficient exceeding 100 fJ V<sup>−1</sup>m<sup>−1</sup> through electron depletion effects, which is ten times larger than that observed with a pure W underlayer. Furthermore, it is demonstrated that this composite heavy metal SOT underlayer facilitates the integration of VCMA with opposite spin Hall angles, enabling field-free SOT switching in industry-compatible PMA CoFeB/MgO systems.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"78 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biosensor-Based Microfluidic Platforms for Rapid Clinical Detection of Pathogenic Bacteria","authors":"Ying Hou, Zhen Liu, Haina Huang, Chengming Lou, Zhiwei Sun, Xiaoyan Liu, Jinbo Pang, Shenguang Ge, Zenan Wang, Weijia Zhou, Hong Liu","doi":"10.1002/adfm.202411484","DOIUrl":"https://doi.org/10.1002/adfm.202411484","url":null,"abstract":"Pathogenic bacteria are commonly found in food, water, and soil, posing significant public health challenges globally. Therefore, early, rapid, and highly sensitive strategies for monitoring the bacterial proliferation are crucial for ensuring public health, medical diagnosis, and food safety. Compared to traditional techniques, microfluidic platforms provide powerful detective tools characterized by high integration, high throughput, ease of operation, low reagent consumption, and high sensitivity. Driven by substantial commercial demand, research and development in microfluidic-based rapid detection methods and technologies has progressed significantly derived by the interdisciplinary integration of multiple disciplines. In this review, progress in clinical detection of pathogenic bacteria with microfluidic biosensors, including microfluidic devices for point-of-care (POC) testing, is summarized. Strategies for pathogenic bacteria detection, containing their advantages and disadvantages are discussed in detail. Advanced platforms for capturing and detecting pathogenic bacteria, such as microchannels, microarrays, digital microfluidics (DMF) and paper-based platforms, are highlighted. The accomplishments and shortcomings of these microfluidic devices are also summarized. Additionally, case studies of biosensor‑based microfluidic devices used for detecting diseases caused by bacterial imbalances are listed. Finally, possible research perspectives for further development in highly effective biosensor‑based microfluidics for clinical detection of pathogenic bacteria are proposed.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"60 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Linlin Wang, Huayang Sai, Yi-Yang Tang, Bin Li, Lei Wang, Yunyue Yang, Kai-Cheng Yang, Pengyu Lv, Huiling Duan, Tian-Yun Huang
{"title":"4D Direct Laser Writing for Intelligent Micromachines","authors":"Linlin Wang, Huayang Sai, Yi-Yang Tang, Bin Li, Lei Wang, Yunyue Yang, Kai-Cheng Yang, Pengyu Lv, Huiling Duan, Tian-Yun Huang","doi":"10.1002/adfm.202414571","DOIUrl":"https://doi.org/10.1002/adfm.202414571","url":null,"abstract":"Intelligent micromachines are devices with sizes ranging from submillimeters to nanometers, capable of performing complex tasks adaptively at small scales. Smart micromachines have recently been developed that exhibit shape-morphing capability in response to various stimuli to adapt to their environment. However, for such micromachines to be effective in harsh environments, micromachines should be more than adaptive. Essentially, they must exhibit a high degree of intelligence, characterized by enhanced locomotion capability, self-adaptability, programmability, reconfigurability, and multifunctionality. 4D direct laser writing has enabled the rapid prototyping of stimulus-responsive adaptive micromechanisms and diverse functional microcomponents, including microscale sensors, actuators, data processors, memory structures, and power-supply structures. This review provides a comprehensive overview of the current state of the art in 4D microprinting technology based on two-photon polymerization for the intelligentization of micromachines. Further, it offers insights into the fabrication of intelligent micromachines via the integration of diverse functional components through the 4D direct laser writing technology.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"11 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haicong Zhao, Xinyu He, Jinghan Yang, Min Liu, Xue Chen, Peiyi Wang
{"title":"From Original Ferrocene-Based Small-Molecule Design to Multifunctional Supramolecular Bactericides: Their Efficient Applications in Controlling Biofilm-Associated Bacterial Infections","authors":"Haicong Zhao, Xinyu He, Jinghan Yang, Min Liu, Xue Chen, Peiyi Wang","doi":"10.1002/adfm.202418415","DOIUrl":"https://doi.org/10.1002/adfm.202418415","url":null,"abstract":"Conventional bactericides struggle with biofilm barriers and inefficient deposition on hydrophobic leaves, resulting in undesirable control of plant bacterial diseases. To overcome these challenges, an innovative ferrocene-based small-molecule (FccA8R) is conceived, featuring biofilm disruption capabilities. Further optimizing FccA8R with seven-membered oligosaccharide-involved host–guest supramolecular strategy creates two kinds of biocompatible multifunctional supramolecular nanospheres (FccA8R@<i>β</i>-CD and FccA8R@HP-<i>β</i>-CD). This manipulation efficiently eradicates mature biofilm barriers while enhancing droplet retention on hydrophobic leaves. At a concentration of 56.64 µg mL<sup>−1</sup>, the two materials remove <i>Xanthomonas-</i>biofilms by 76.32–76.83%, notably surpassing that of single FccA8R (57.96%). Their versatility extends to the enhanced inhibition of bacterial motility, extracellular enzymes secretion, and exopolysaccharides production, all reducing the bacterial virulence. In vivo pot experiments, FccA8R@<i>β</i>-CD and FccA8R@HP-<i>β</i>-CD demonstrate workable control efficacies of 48.91–52.03% against rice bacterial blight at 200 µg mL<sup>−1</sup>, superior to the commercial thiodiazole-copper-20%SC (36.42%) and FccA8R-0.1%Tween (39.54%). Furthermore, these supramolecular assemblies disclose broad-spectrum bactericidal efficacy (71.45–73.19%) against kiwifruit canker, significantly higher than thiodiazole-copper-20%SC (43.05%) and FccA8R-0.1%Tween (57.24%). Besides, supramolecular bactericides are safe for plants and non-target organisms like zebrafish and earthworms. Briefly, this research builds a key foundation for creating green bactericides from small-molecule conception to eco-friendly supramolecular assemblies, realizing the prevention of bacterial diseases and environmental safety.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"170 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High-Performance Ultrasensitive Flexible Piezoelectric Thin Film Sensors via a Cost-Effective Transfer Strategy","authors":"Qianqian Xu, Miao Jia, Peiqiong Zhou, Yan Zhang, Wei Guo, Senfeng Zhao, Hanmin Zeng, Jianxun Zhang, Mingyang Yan, Shumiao Jiang, Kechao Zhou, Dou Zhang, Chris Bowen","doi":"10.1002/adfm.202414211","DOIUrl":"https://doi.org/10.1002/adfm.202414211","url":null,"abstract":"Currently, reported physical or chemical methods to produce flexible perovskite thin films rely on the use of expensive single crystal substrates or large-scale precision equipment. Here, a high-performance ultrasensitive piezoelectric sensor via a cost-effective strategy is developed to enable the release of lead zirconate titanate (PZT) thin films from an inexpensive mica substrate, which are subsequently transferred to a flexible polyethylene terephthalate substrate. The weak van der Waals interaction between the mica/La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> heterostructures minimizes mechanical clamping effects and provides favorable lattice and thermal matching conditions for the growth of high-quality thin films. The transferred thin films exhibit significantly improved mechanical and functional properties, including an outstanding piezoelectric response (474.2 pm V<sup>−1</sup>) and an excellent mechanical flexibility, with a bending radius up to 1 mm. The sensor formed via the new transfer strategy exhibits a highly sensitive response to wide-angle bending (110 mV degree<sup>−1</sup>) and small pressure changes (1.8 V kPa<sup>−1</sup>), and is successfully employed for real-time breathing monitoring and wireless gesture recognition, thereby demonstrating its significant potential in applications related to flexible electronics.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"14 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Women in Renewable Energy","authors":"Samrana Kazim, Thuc-Quyen Nguyen","doi":"10.1002/adfm.202417502","DOIUrl":"https://doi.org/10.1002/adfm.202417502","url":null,"abstract":"<p>The demand for sustainable and renewable energy is increasing due to the depletion of fossil fuels and the global climate crisis. Thus, the need for affordable, clean, safe energy conversion and storage systems that are sustainable is vital and requires new approaches and disruptive technologies to contribute to global energy production. This inspires researchers and engineers from multidisciplinary research areas to discover novel materials for energy conversion and storage. Moreover, it is paramount to unveil their structure–property–performance relationship and fundamental processes of energy materials and devices.</p>\u0000<p>This special issue on Women in Renewable Energy encompasses 3 reviews and 15 research articles on the most updated research progress in renewable energy conversion and storage areas conducted by leading female researchers globally. It covers a broad range of innovative functional materials discovery, synthetic methodologies, structure–property relationships, and their applications in organic solar cells, perovskite solar cells, rechargeable batteries, and capacitors.</p>\u0000<p>For energy conversion, organic and perovskite solar cells (PSCs) are emerging photovoltaic (PV) technology that has advanced due to their tunable optoelectronic properties. These technologies are solution-processable and can be fabricated using cost-effective commercially available coating techniques representing a substantial benefit for lowering manufacturing costs. This emerging PV technology minimizes the levelized cost of electricity and energy payback time as compared to the silicon PV technology.<sup>[</sup><span><sup>2</sup></span><sup>]</sup> So far, halide PSCs have achieved a certified record power conversion efficiency<sup>[</sup><span><sup>1</sup></span><sup>]</sup> (PCE) of 26.7% for single-junction solar cells, while for single-junction organic solar cells (OSCs) reached 19.2%. In both types of solar cells, the exploration of new absorber and charge transport materials, new device designs, fabrication techniques is particularly relevant to improving the efficiency and stability of not only single-junction but also multi-junction tandem solar cells.</p>\u0000<p>In high-efficiency tandem solar cells, wide-bandgap perovskites as the top cell are desirable, which requires a large amount of Br concentration in the composition of the perovskite to expand the bandgap; however, the photo instability and heterogeneous halide distribution are brought on by a rise in Br concentration. Nogueira et al. report that the addition of MACl destabilizes the intermediate phases and favors the formation of wide-bandgap perovskites with high crystallinity and homogenizes the distribution of halides, thus improving the performance of PSCs (2307104). Similarly, for low-bandgap perovskite, Petrozza et al. explore that alloying formamidinium lead iodide (FAPbI<sub>3</sub>) perovskite absorber with small amount of Br<sup>−</sup> anion increases the radiative recombinati","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"18 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}