Article
Chemistry, Multidisciplinary
Ying Lu, Qian Wang, Ruyi Chen, Leilei Qiao, Foxin Zhou, Xia Yang, Dong Wang, Hui Cao, Wanli He, Feng Pan, Zhou Yang, Cheng Song
Summary: The study investigates spin-dependent charge transport properties in chiral bromide perovskites and finds that they can maintain good crystallinity even in oxidative, humid, and high-temperature environments, with a high spin filtration efficiency of up to 90%.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Valerii Y. Sirenko, Olesia Kucheriv, Elzbieta Gumienna-Kontecka, Sergiu Shova, Il'ya A. Gural'skiy
Summary: In this study, novel 2D hybrid perovskites based on chiral alpha-amino acid L-histidine are presented. These compounds show non-centrosymmetric crystal structures and exhibit multiband absorption and single-peak photoluminescence. Additionally, they demonstrate excellent thermal stability.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Qingqian Wang, Hongmei Zhu, Yangzhi Tan, Junjie Hao, Taikang Ye, Haodong Tang, Zhaojin Wang, Jingrui Ma, Jiayun Sun, Tianqi Zhang, Fankai Zheng, Wenda Zhang, Hoi Wai Choi, Wallace C. H. Choy, Dan Wu, Xiao Wei Sun, Kai Wang
Summary: Chiral-induced spin selectivity (CISS) effect provides an innovative approach to spintronics and quantum-based devices for chiral materials, and has the potential to operate under room temperature and zero applied magnetic field. This study reports spin-QLEDs enabled by 2D chiral perovskites as CISS layer, and discovers the regulation pattern of chirality and thickness affecting the circularly polarized electroluminescence (CP-EL) emission.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jingying Wang, Haipeng Lu, Xin Pan, Junwei Xu, Haoliang Liu, Xiaojie Liu, Dipak R. Khanal, Michael F. Toney, Matthew C. Beard, Z. Valy Vardeny
Summary: Research has shown that integrating chiral organic ligands into two-dimensional hybrid organic-inorganic perovskites can introduce spintronics applications, leading to spin-dependent photovoltaic and photogalvanic responses. This discovery may have potential applications in optoelectronic devices sensitive to light helicity.
Article
Chemistry, Inorganic & Nuclear
Mi-Hee Jung
Summary: The incorporation of 3-(aminomethyl)pyridinium (3API2) cation into FA(Pb0.5Sn0.5)I3 perovskite leads to the development of 2D Dion-Jacobson-phase perovskites with low band gaps and high-quality films, which improve the performance of perovskite solar cells.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ke Xu, Lei He, Yu-Zhen Wang, Xin Meng, Ping-Ping Shi, Qiong Ye
Summary: A two-dimensional organic-inorganic hybrid compound with a narrow band gap was reported, showing semiconductor properties and photoelectric response, as well as a reversible solid-state phase transition at a lower temperature.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Meng-En Sun, Yonggang Wang, Fei Wang, Jiangang Feng, Lingrui Wang, Hanfei Gao, Jiazhen Gu, Gaosong Chen, Yongping Fu, Kejun Bu, Tonghuan Fu, Junlong Li, Xujie Lu, Lei Jiang, Yuchen Wu, Shuang-Quan Zang
Summary: The structural and optical differences between chiral and achiral perovskites were systematically investigated under hydrostatic pressure. The results showed that the chiral perovskite undergoes a structural transformation and exhibits a negative linear compressibility effect, while the achiral perovskite does not show these changes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Manoj K. Jana, Ruyi Song, Yi Xie, Rundong Zhao, Peter C. Sercel, Volker Blum, David B. Mitzi
Summary: A specific bond angle disparity connected with asymmetric tilting distortions of metal halide octahedra correlates with the computed spin-splitting in 2D hybrid perovskites. This distortion metric can serve as a crystallographic descriptor for rapidly discovering potential candidate materials with strong spin-splitting. Local inorganic layer distortions induced via appropriate organic cations provide a key design objective to achieve strong spin-splitting in perovskites.
NATURE COMMUNICATIONS
(2021)
Review
Chemistry, Physical
Jingying Wang, Baorui Mao, Zeev Valy Vardeny
Summary: Chiral materials exhibit interesting physical properties and the discovery of chirality-induced spin selectivity (CISS) in 2D chiral hybrid perovskites shows promising potential for spintronic devices.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Xiyue Dong, Mingqian Chen, Rui Wang, Qin Ling, Ziyang Hu, Hang Liu, Yufei Xin, Yang Yang, Jian Wang, Yongsheng Liu
Summary: A concept of quantum confinement breaking in 2D perovskites is proposed using organic semiconductor spacers based on theoretical calculation and experimental results. Intensive orbital coupling is found in (BThMA)(2)PbI4, resulting in the breaking of the multiple quantum well structure, while no orbital interactions exist in (BPhMA)(2)PbI4. The (BThMA)(2)MA(n)(-1)Pb(n)I(3)(n)(+1) (n = 5) perovskite-based device exhibits an outstanding power conversion efficiency (PCE) of 18.05%, which is much higher than that of the BPhMA-based device (PCE = 12.69%) and among the best efficiency in 2D PSCs based on long conjugated spacers.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Olesia I. Kucheriv, Valerii Y. Sirenko, Hanna R. Petrosova, Vadim A. Pavlenko, Sergiu Shova, Il'ya A. Gural'skiy
Summary: 3D hybrid organic-inorganic halide perovskites, especially lead-based ones, have attracted significant attention due to their excellent physical properties and potential applications in photovoltaics and light-emitting diodes. This paper presents the synthesis and characterization of new 3D tin-based perovskites with an aziridinium cation, which exhibit temperature-induced crystallographic phase transitions. The compounds demonstrate semiconductor characteristics with tunable optical band gaps, making them potential candidates for solar cells and light-emitting diodes. The discovery of these lead-free perovskites expands the range of suitable materials in these applications.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Yu-Ling Zeng, Xue-Qin Huang, Chao-Ran Huang, Hua Zhang, Fang Wang, Zhong-Xia Wang
Summary: Chiral perovskites have been synthesized with ferroelectric properties, exhibiting 222F2-type paraelectric-ferroelectric behavior and clear ferroelastic domain switching. Additionally, they show thermochromism with a color change from orange-yellow to orange-red, marking a significant discovery in the field of chiral materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Multidisciplinary
Zhixing Gan, Yingchun Cheng, Weijian Chen, Kian Ping Loh, Baohua Jia, Xiaoming Wen
Summary: 2D organic-inorganic hybrid Ruddlesden-Popper perovskites have garnered attention for their unique photophysics, with room for improvement in performance of photoelectronic devices.
Article
Chemistry, Physical
A. Tofanello, A. L. M. Freitas, T. B. de Queiroz, A. Bonadio, H. Martinho, J. A. Souza
Summary: Two-dimensional Ruddlesden-Popper perovskites with magnetism can be achieved by using histidine molecules as spacers to induce charge rebalancing, resulting in a positive magnetic moment. These magnetized materials show intriguing physical properties due to the delicate balance between magnetism and the quantum well confinement effect in the inorganic layer.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Alexandre Abherve, Nicolas Mercier, Anil Kumar, Tapan Kumar Das, Jacky Even, Claudine Katan, Mikael Kepenekian
Summary: Recent research has shown the existence of chirality-induced spin selectivity (CISS) in chiral molecules, opening up possibilities for spintronics. In this study, new chiral organic cations were used to prepare 2D chiral halide perovskites, which exhibited rare spin textures and showed partial spin polarization in the CISS effect. Spin valve devices fabricated from these materials exhibited magnetoresistance responses at higher temperatures. These stable lead-bromide HP materials not only have potential for spintronic applications, but also highlight the importance of polar symmetry-breaking topology.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shunda Zhan, Bowen Liu, Xuemeng Yu, Xihan Chen, Guosong Zeng, Yonghua Zhao
Summary: This study presents an efficient method for fabricating nano-structured SiC using electrolytic plasma-assisted chemical etching (EPACE) without aggressive fluorine-containing reactants. The EPACE method allows for the formation of a uniform nanoporous layer on SiC wafers in a KOH aqueous solution, with adjustable pore diameters. The EPACE process involves electrolytic plasma-assisted oxidation and thermochemical reduction of an oxide. The approach demonstrates high etching efficiency and has the potential for time-saving and sustainable nanofabrication in industrial applications.
Article
Chemistry, Applied
Dongmei He, Ru Li, Baibai Liu, Qian Zhou, Hua Yang, Xuemeng Yu, Shaokuan Gong, Xihan Chen, Baomin Xu, Shangfeng Yang, Jiangzhao Chen
Summary: By investigating the defect repair mechanism of ionic liquids in perovskite solar cells, it was found that an abnormal buried interface defect passivation mechanism is induced by cation-induced steric hindrance. The results reveal that interfacial defect passivation relies on anions rather than cations. The study also demonstrates that large-sized cations can weaken the ionic bond strength between anions and cations, promoting the interaction between anions and SnO2 and perovskites, leading to improved defect passivation and interfacial contact.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Applied
Baibai Liu, Ru Li, Qixin Zhuang, Xuemeng Yu, Shaokuan Gong, Dongmei He, Qian Zhou, Hua Yang, Xihan Chen, Shirong Lu, Zong-Xiang Xu, Zhigang Zang, Jiangzhao Chen
Summary: A bottom-up holistic carrier management strategy is proposed in this study to minimize bulk and interfacial energy losses for high-performance perovskite photovoltaics, induced synergistically by multiple chemical bonds.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Deyu Gao, Ru Li, Xihan Chen, Cong Chen, Chenglin Wang, Boxue Zhang, Mengjia Li, Xueni Shang, Xuemeng Yu, Shaokuan Gong, Thierry Pauporte, Hua Yang, Liming Ding, JianXin Tang, Jiangzhao Chen
Summary: A strategy for managing interfacial defects and carrier dynamics through the modulation of functional groups and spatial conformation of ammonium salt molecules is proposed. The use of 3-APAI surface treatment and 5-aminopentanoic acid hydroiodide post-treatment leads to the formation of 2D perovskite passivation layers, resulting in improved photovoltaic performance.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Junyan Xiang, Xianggao Li, Shaokuan Gong, Shirong Wang, Xihan Chen, Fei Zhang
Summary: We developed a simple green method using ethyl acetate as an anti-solvent to obtain uniform phase dispersion of 2D perovskite films. These films exhibit a more homogeneous phase distribution, resulting in a shining surface, reduced defect density, high conductivity, and a record-breaking PCE of 18.86%. Furthermore, the devices showed excellent long-term stability with 85% to 90% retention of their initial values after 1008 hours of testing.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Shuo Wang, Qian Zhao, Abhijit Hazarika, Simiao Li, Yue Wu, Yaxin Zhai, Xihan Chen, Joseph M. Luther, Guoran Li
Summary: A detailed picture of temperature dependent behavior of Cs(x)FA(1-x)PbI(3) perovskite quantum dots is constructed by in situ optical spectroscopic and structural measurements. The thermal degradation mechanism depends on both the exact chemical composition and the ligand binding energy. Cs-rich quantum dots undergo a phase transition from black gamma-phase to yellow delta-phase, while FA-rich quantum dots directly decompose into PbI2. Quantum dot growth is observed at elevated temperatures. FA-rich quantum dots exhibit stronger electron-longitudinal optical phonon coupling, leading to a higher probability of exciton dissociation compared to Cs-rich quantum dots. Surface ligand-induced strain enables full-range A-site tuning.
NATURE COMMUNICATIONS
(2023)
Article
Energy & Fuels
Jackson W. Schall, Andrew Glaws, Nutifafa Y. Doumon, Timothy J. Silverman, Michael Owen-Bellini, Kent Terwilliger, Md Aslam Uddin, Prem Rana, Joseph J. Berry, Jinsong Huang, Laura T. Schelhas, Dana B. Kern
Summary: In this study, electroluminescence (EL) and thermal imaging were used to investigate the degradation of metal halide perovskite (MHP) photovoltaic (PV) mini-modules. Different spatial patterns were observed in the EL images depending on the external stress conditions. Dark speckle features dominated after UV stress, while lateral intensity gradients were prominent after thermal cycling stress. Multimodal electro-optical imaging, including EL, photoluminescence and dark lock-in thermography, provided a deeper understanding of the degradation modes. UV exposure and thermal cycling stress testing alone could not replicate the same degradation signatures observed after outdoor deployment, indicating the occurrence of multiple degradation modes. The spatial characterization of degradation modes provides a foundation for developing targeted accelerated stress testing procedures by comparing with outdoor aging.
Article
Nanoscience & Nanotechnology
Qiushi Hu, Yuling Huang, Xuemeng Yu, Shaokuan Gong, Yifan Wen, Yong Liu, Geng Li, Qiang Zhang, Ruquan Ye, Xihan Chen
Summary: Solar-driven photocatalysis is a promising approach for renewable energy application, and metal-free graphitic carbon nitride photocatalysts have gained attention in H2O2 photocatalysis. Understanding the reaction mechanism is important for guiding catalyst design. In this study, a low-cost metal-free H2O2 photocatalyst model was developed, which showed efficient H2O2 production.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Marissa S. Martinez, Michelle A. Nolen, Nicholas F. Pompetti, Lee J. Richter, Carrie A. Farberow, Justin C. Johnson, Matthew C. Beard
Summary: Controlling the binding of functional organic molecules on quantum dot surfaces is crucial for understanding the resulting organic-inorganic hybrid behavior. In this study, the binding of tetracenedicarboxylate ligands on PbS quantum dots was varied through solid-state ligand exchange. Different ligand concentrations led to different structures and properties, with low concentrations resulting in mixed ligand structures, intermediate concentrations resulting in ligand-ligand interactions through hydrogen bonding, and high concentrations resulting in complete ligand exchange.
Review
Chemistry, Physical
Jingying Wang, Baorui Mao, Zeev Valy Vardeny
Summary: Chiral materials exhibit interesting physical properties and the discovery of chirality-induced spin selectivity (CISS) in 2D chiral hybrid perovskites shows promising potential for spintronic devices.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Haichao Yang, Ru Li, Shaokuan Gong, Huaxin Wang, Saif M. H. Qaid, Qian Zhou, Wensi Cai, Xihan Chen, Jiangzhao Chen, Zhigang Zang
Summary: In this study, a bottom-up bilateral modification strategy was proposed to optimize the performance of perovskite solar cells. By incorporating arsenazo III (AA) into SnO2 nanoparticles, defects in the electron transport layer, perovskite, and buried interface could be regulated, resulting in improved stability and energy conversion efficiency of the devices.
Article
Multidisciplinary Sciences
Qi Jiang, Robert Tirawat, Ross A. Kerner, E. Ashley Gaulding, Yeming Xian, Xiaoming Wang, Jimmy M. Newkirk, Yanfa Yan, Joseph J. Berry, Kai Zhu
Summary: Metal halide perovskite solar cells (PSCs) show great potential as a low-cost thin-film photovoltaic technology. To ensure their commercialization, it is important to understand their reliability under real-world outdoor conditions. This study demonstrates that indoor accelerated stability tests can predict the performance of PSCs in outdoor environments. The degradation rates under illumination and elevated temperatures are found to be the most informative for assessing device reliability. The study also identifies the interface between indium tin oxide/self-assembled monolayer-based hole transport layer and perovskite layer as a key factor affecting device stability.
Article
Energy & Fuels
Haiyun Li, Cong Zhang, Cheng Gong, Daliang Zhang, Hong Zhang, Qixin Zhuang, Xuemeng Yu, Shaokuan Gong, Xihan Chen, Jiabao Yang, Xuanhua Li, Ru Li, Jingwei Li, Jinfei Zhou, Hua Yang, Qianqian Lin, Junhao Chu, Michael Gratzel, Jiangzhao Chen, Zhigang Zang
Summary: Li et al. use 2-aminoindan hydrochloride as an additive to form a 2D/3D perovskite structure in order to prevent charge losses and degradation at the buried interface of inverted methylammonium-free perovskite solar cells. They propose a strategy to manipulate the crystallization of the perovskite by incorporating this additive into the precursor inks. This approach not only improves the efficiency of the solar cells, but also enhances their stability.
Article
Chemistry, Multidisciplinary
Shaokuan Gong, Yuling Huang, Xuemeng Yu, Qiushi Hu, Jingjing Liu, Jiazhi Meng, Yifan Wen, Xihan Chen
Summary: Halide-perovskite-based materials hold great potential for optoelectronic applications, and understanding photogenerated carrier dynamics is crucial for their development. Recent advances in transient spectroscopic techniques have enabled the study of carrier dynamics, providing insights for the future development of perovskite-based optoelectronics.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ying Xie, Jingjing Liu, Guanxiong Wang, Qiushi Hu, Xihan Chen
Summary: In this study, BTDA-modified g-C3N4 was synthesized through a simple one-step dehydration process, achieving efficient H2O2 photocatalysis. Transient absorption experiments revealed the electron transfer process and proposed a 2-electron oxygen reduction pathway.
CHEMICAL COMMUNICATIONS
(2023)
