Article
Physics, Multidisciplinary
Ying Hu, Jiaping Wang, Peng Zhao, Zhenhua Lin, Siyu Zhang, Jie Su, Miao Zhang, Jincheng Zhang, Jingjing Chang, Yue Hao
Summary: Due to its excellent thermal stability and optoelectronic properties, all-inorganic perovskite has been considered as a promising candidate to solve the thermal decomposition problem of conventional organic-inorganic hybrid perovskite solar cells. This study focuses on the key issues of CsPbIBr2-based solar cells, including the perovskite layer thickness, band offset of the charge transport layer, doping concentration of the charge transport layer, and electrode work function, through device simulations.
Article
Chemistry, Multidisciplinary
Zhaonan Du, Huimin Xiang, Amin Xie, Ran Ran, Wei Zhou, Wei Wang, Zongping Shao
Summary: Organic-inorganic perovskite solar cells have achieved the highest power conversion efficiency so far, but their widespread application is limited by issues such as poor stability. All-inorganic perovskite solar cells with CsPbIBr2 as the light absorber have better stability, but lower efficiency compared to organic-inorganic perovskite solar cells. In this study, the performance of CsPbIBr2-based solar cells was improved by doping with monovalent copper cations, resulting in higher efficiency and enhanced stability.
Review
Chemistry, Multidisciplinary
Rui He, Shengqiang Ren, Cong Chen, Zongjin Yi, Yi Luo, Huagui Lai, Wenwu Wang, Guanggen Zeng, Xia Hao, Ye Wang, Jingquan Zhang, Changlei Wang, Lili Wu, Fan Fu, Dewei Zhao
Summary: The past decade has seen significant advancements in perovskite solar cells, particularly in the role of wide-bandgap PSCs in tandem solar cells. Current efforts are focused on addressing stability and efficiency issues in both organic-inorganic hybrid perovskites and all-inorganic perovskites.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Energy & Fuels
Junyi Huang, Shenghua He, Wenzhi Zhang, Aziz Saparbaev, Yi Wang, Yueyue Gao, Luwen Shang, Guohua Dong, Lobar Nurumbetova, Gentian Yue, Yongguang Tu
Summary: The VALT-CsPbIBr2 film prepared through dynamic vacuum-assisted low-temperature engineering shows superior performance in optical properties and microstructure, leading to increased efficiency and stability of perovskite solar cells.
Article
Chemistry, Multidisciplinary
Chen Chen, Xiao Wang, Zhipeng Li, Xiaofan Du, Zhipeng Shao, Xiuhong Sun, Dachang Liu, Caiyun Gao, Lianzheng Hao, Qiangqiang Zhao, Bingqian Zhang, Guanglei Cui, Shuping Pang
Summary: Introducing polyacrylonitrile (PAN) for passivating uncoordinated lead cations in perovskite films has been successful in improving device efficiency and open-circuit voltage, increasing ion migration activation energy, and enhancing operational stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Xu Zhao, Jiajun Yang, Shengcheng Wu, Tong Yun, Shaozhen Li, Jinwei Gao, Sujuan Wu
Summary: In this work, CsAc and HPbI3 dual-additives are used to tune the properties of low-temperature processed CsPbIBr2 perovskite solar cells (PSCs). CsAc is used to modify the surface of CsPbIBr2 and optimize the interface, while HPbI3 is used to dope the perovskite layer. The dual-additive strategy can optimize the microstructure and regulate the optoelectrical characteristics of carbon-based CsPbIBr2 PSCs. The CsAc passivates the vacancy defect and improves the performance of PSCs, while the HPbI3 improves the crystallinity and morphology of CsPbIBr2 films and reduces trap-state density.
SURFACES AND INTERFACES
(2023)
Article
Green & Sustainable Science & Technology
Xin Wang, Yuan Xu, Huayan Zhang, Zhongliang Yan, Yu Jing, Xiao Liu, Jihuai Wu, Zhang Lan
Summary: By introducing multifunctional aminoguanidine hemisulfate into the CsPbIBr2 perovskite layer, defects were successfully passivated, leading to a high energy conversion efficiency. Using all-inorganic CsPbIBr2 perovskite solar cells can significantly reduce costs, providing a new direction for development in this field.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Materials Science, Multidisciplinary
Guizhang Sheng, Jixi Wang, Xiudi Xiao, Xuesong Cai, Xiaoman Wang, Zhuoneng Bi, Yuan Lu, Yangbiao Liu, Yanqing Zhu, Xueqing Xu, Gang Xu
Summary: In this study, a postannealing strategy was utilized to optimize the NiOx/Au interface in order to improve the efficiency and stability of all-inorganic CsPbIBr2 perovskite solar cells. Through electron beam evaporation and postannealing, the efficiency of the devices based on NiOx reached 6.7%, with the best performing device retaining 95% of its initial efficiency over 100 hours at 85 degrees Celsius.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Physical
Jian He, Jie Su, Jiayu Di, Zhenhua Lin, Siyu Zhang, Jing Ma, Jincheng Zhang, Shengzhong Liu, Jingjing Chang, Yue Hao
Summary: Researchers have successfully improved the efficiency and stability of inorganic cesium lead halide optoelectronic devices and reduced energy loss through surface reconstruction.
Review
Chemistry, Multidisciplinary
Ibrahim M. Maafa
Summary: Organic-inorganic hybrid perovskite solar cells suffer from stability issues, but all-inorganic perovskite solar cells are promising candidates to overcome these problems. The performance of all-inorganic perovskite solar cells has been continuously improved, but challenges such as stability and energy loss remain.
Article
Chemistry, Multidisciplinary
Junshuai Zhang, Qiyao Guo, Yuanyuan Zhao, Jialong Duan, Qunwei Tang
Summary: This study presents an interface-stabilization strategy for a perovskite film by forming an inorganic ZrO2 layer to strengthen the perovskite lattice, resulting in improved efficiency and stability of the device.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jiajun Yang, Xiang Yu, Xubing Lu, Xingsen Gao, Lingling Shui, Jinwei Gao, Sujuan Wu, Jun-Ming Liu
Summary: This study focuses on improving the performance of CsPbIBr2 perovskite solar cells by using TFEMA, which results in enhanced efficiency due to optimized microstructure, reduced carrier recombination, lower trap-state density, and promoted charge transfer.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Inorganic & Nuclear
Shiqiang Jiang, Haojie Sui, Benlin He, Xinyi Zhang, Zhihao Zong, Haiyan Chen, Qunwei Tang
Summary: The properties of CsPbBr3 film are improved by the synergistic effect of alkali metal doping and thiocyanate passivation in NaSCN and KSCN dopants, including enhanced grain size and crystallinity, reduced trap state density, and improved interfacial energetics match. The resulting CsPbBr3 perovskite solar cells without hole-transport materials achieve a highly enhanced power conversion efficiency of 10.38% and improved stability under high humidity conditions.
DALTON TRANSACTIONS
(2023)
Article
Energy & Fuels
Xin Wang, Yu Jing, Jingyang Zhang, Shibo Wang, Xiao Liu, Yuan Xu, Huayan Zhang, Zhongliang Yan, Jihuai Wu, Zhang Lan
Summary: Stability has always been a major challenge in the commercialization of perovskite solar cells (PSCs). All-inorganic perovskite semiconductor materials, known for their good thermal stability, have attracted much attention in solving this challenge. However, the high density of defects in all-inorganic perovskite films poses a serious threat to the stability of PSCs. By introducing multifunctional additives, multiple passivation mechanisms can be realized simultaneously, greatly improving the power conversion efficiency (PCE).
Article
Multidisciplinary Sciences
Cheng Liu, Xiuhong Sun, Yi Yang, Olga A. Syzgantseva, Maria A. Syzgantseva, Bin Ding, Naoyuki Shibayama, Hiroyuki Kanda, Farzaneh Fadaei Tirani, Rosario Scopelliti, Shunlin Zhang, Keith G. Brooks, Songyuan Dai, Guanglei Cui, Michael D. Irwin, Zhipeng Shao, Yong Ding, Zhaofu Fei, Paul J. Dyson, Mohammad Khaja Nazeeruddin
Summary: Using a thermally stable ionic liquid [PPN][TFSI], the high-temperature solid-state reaction between Cs4PbI6 and DMAPbI3 can be retarded, enabling the preparation of high-quality and large-area CsPbI3 films. [PPN][TFSI] increases the formation energy of superficial vacancies and prevents phase degradation of CsPbI3. The resulting PSCs achieved a power conversion efficiency of 20.64% (certified 19.69%) with long-term operational stability over 1000 hours. A record efficiency of 16.89% for an all-inorganic perovskite solar module was achieved, with an active area of 28.17 cm2.
Article
Materials Science, Multidisciplinary
Zeyang Zhang, Weidong Zhu, Tianjiao Han, Tianran Wang, Wenming Chai, Jiaduo Zhu, He Xi, Dazheng Chen, Gang Lu, Peng Dong, Jincheng Zhang, Chunfu Zhang, Yue Hao
Summary: In order to produce efficient and low-cost carbon-electrode perovskite solar cells (PSCs), it is necessary to process high-quality CsPbBr3 films at low temperatures. By introducing CsBr species into the PbBr2 precursor, the crystal orientation of the PbBr2 film can be adjusted from [020] to [031], with the CsBr additive remaining in the film as CsPb2Br5 phase. The reaction energy barrier between (031) planes of PbBr2 and CsBr is found to be lower by 2.28 eV compared to (020) planes. As a result, CsPbBr3 films with full coverage, high purity, high crystallinity, and micro-sized grains can be obtained at a low temperature of 150 degrees C. Carbon-electrode PSCs with these CsPbBr3 films demonstrate a record-high efficiency of 10.27% and excellent operation stability. Additionally, superior efficiencies of 8.00% for a 1 cm(2) area cell and 8.27% for a flexible cell with excellent mechanical bending characteristics are also achieved.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Dongsheng Cui, Yawei Du, Zhenhua Lin, Mengyang Kang, Yifei Wang, Jie Su, Jincheng Zhang, Yue Hao, Jingjing Chang
Summary: A memory device with an Ag/Ga2O3/Pt structure has been successfully fabricated, exhibiting both bipolar resistive switching (BRS) and unipolar resistive switching (URS) behaviors. It was found that the bipolar and unipolar modes can be set by applying a positive voltage with the same compliance current (I-cc) of 1 mA. The reset process involves a polarity change of sweeping voltages without I-cc to switch between the bipolar and unipolar modes. The conduction mechanisms are identified as conducting filaments (CFs) for the low resistance state (LRS), and schottky emission for BRS, and space charge limited conduction mechanism for URS in the high resistance states (HRS), respectively.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zeyulin Zhang, Yanshuang Ba, Dazheng Chen, Pengru Yan, Qingwen Song, Yuming Zhang, Weidong Zhu, Chunfu Zhang, Yue Hao
Summary: In this study, ultrawide-bandgap Ga2O3 was introduced into an inorganic perovskite device, significantly enhancing its performance in the deep UV region.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Haidong Yuan, Jie Su, Zhenhua Lin, Yuanjie Lv, Jincheng Zhang, Jie Zhang, Jingjing Chang, Yue Hao
Summary: Modulating the surface band levels and carrier transportation of fl-Ga2O3 can be achieved by forming fl-Ga2O3/h-XN (X = B, Al, Ga) heterostructures, which can further be controlled by an external electric field. The band bending and electronic characteristics of these heterostructures are influenced by charge transfers, tunneling barriers, and built-in electric fields. These findings provide guidance for designing and controlling the surface band levels and carrier transportation in high-performance fl-Ga2O3 devices.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Linfeng Ye, Pengfei Guo, Jie Su, Kaiyuan Zhang, Chen Liu, Penghui Yang, Wenhao Zhao, Pengzhen Zhao, Zhe Liu, Jingjing Chang, Qian Ye, Hongqiang Wang
Summary: An effective surface reconstruction strategy is demonstrated to convert excess PbI2 into a gradient lead sulfate-silica bi-layer, which stabilizes the perovskite film and reduces interfacial charge transfer barrier in perovskite solar cells (PSCs). The resulting PSCs show high efficiency and remarkable environmental stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yumeng Xu, Xing Guo, Zhenhua Lin, Qingrui Wang, Jie Su, Jincheng Zhang, Yue Hao, Keke Yang, Jingjing Chang
Summary: By designing a multifunctional elastomer with abundant hydrogen bonds and carbonyl groups, the chemical bonding between polymer and perovskite has been enhanced, leading to the preferential growth of high-quality perovskite film. The hydrogen-bonded polymer network improves air stability, flexibility, and reduces lead release, paving the way for industrialization of high-performance flexible perovskite solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Crystallography
Haifeng Yang, Hui Wang, Ke Wang, Dongqi Liu, Lifang Zhao, Dazheng Chen, Weidong Zhu, Jincheng Zhang, Chunfu Zhang
Summary: Although the certified power conversion efficiency of organic-inorganic perovskite solar cells has reached 25.7%, their thermal and long-term stability is a major challenge due to volatile organic components. Carbon-based all-inorganic perovskite solar cells have exhibited high stability and low-cost advantages. Many astonishing developments have been achieved in this field.
Article
Chemistry, Physical
Zeyang Zhang, Jiahui Shang, Henghang Ge, Yunlong Zhang, Long Zhou, Weidong Zhu, Dazheng Chen, Jincheng Zhang, Chunfu Zhang, Yue Hao
Summary: Perovskite solar cells (PSCs) are gaining attention for their high efficiency and low cost, making them a promising candidate for the future of photovoltaic technology. In this study, an additive-assisted blade-coating technique was proposed to deposit perovskite films, which exhibited a wide processing window and improved deposition quality. The addition of KSCN induced an endothermic reaction, reducing solvent evaporation rate and slowing down the nucleation and crystallization process, resulting in high-quality perovskite films with improved uniformity and larger grain size. The PSCs fabricated using this technique demonstrated power conversion efficiencies of 20.40% and 17.62% for small-area blade-coated cells and perovskite solar modules, respectively. The blade-coating technique holds great potential for the commercialization of perovskite PV technology.
MATERIALS TODAY ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Siyu Zhang, Jian He, Xing Guo, Jie Su, Zhenhua Lin, Jincheng Zhang, Lixin Guo, Yue Hao, Jingjing Chang
Summary: CsBr/CH3OH treatment can suppress phase transitions and surface defects of CsPbBr3 films, leading to improved photovoltaic performance.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Wenming Chai, Weidong Zhu, Dazheng Chen, Long Zhou, He Xi, Jincheng Zhang, Chunfu Zhang, Yue Hao
Summary: This study presents a simple and cost-effective method for fabricating all-inorganic CsPbI3 perovskite solar cells with improved performance by optimizing the preparation process of the electron transport layer and energy level alignment at the interface.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Qingrui Wang, Zhenhua Lin, Yumeng Xu, Boyao Zhang, Xing Guo, Zhaosheng Hu, Yue Hao, Jingjing Chang
Summary: Despite the high efficiency of perovskite solar cells, the toxicity of lead content remains a severe problem, especially during harsh weather conditions. Chelating resins have shown excellent adsorption capabilities in treating industrial wastewater. In this study, an iminodiacetic acid (IDA)-CR is introduced as encapsulation for perovskite solar cells, effectively reducing lead leakage by more than 90%.
Article
Materials Science, Multidisciplinary
Xing Guo, Zhenhua Lin, Wenying Cao, Yumeng Xu, Qingrui Wang, Boyao Zhang, Yue Hao, Jingjing Chang
Summary: TEAPF(6) doping improves the crystal quality and stability of perovskite films, leading to a higher efficiency of perovskite solar cells.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Multidisciplinary Sciences
Xue Zhao, Pengfei Fu, Pan Li, Hainan Du, Jinsong Zhu, Ciyu Ge, Longbo Yang, Boxiang Song, Haodi Wu, Tong Jin, Qingxun Guo, Liang Wang, Jinghui Li, Zewen Xiao, Jingjing Chang, Guangda Niu, Jiajun Luo, Jiang Tang
Summary: Lead halide perovskite nanocrystals have potential as x-ray scintillators, but suffer from toxicity issues and low light yield. Bivalent europium ions (Eu2+) are a prospective replacement for lead due to efficient and self-absorption-free d-f transition. Solution-processed organic-inorganic hybrid halide BA(10)EuI(12) single crystals were demonstrated for the first time, exhibiting high photoluminescence quantum yield, large Stokes shift, and appreciable light yield. BA(10)EuI(12) also showed a short excited-state lifetime, linear scintillation response, low detection limit, and clear x-ray imaging capability.
Review
Chemistry, Multidisciplinary
Xian-Gang Hu, Zhenhua Lin, Liming Ding, Jingjing Chang
Summary: This review comprehensively summarizes the various functions of carbon nanotubes (CNTs) in perovskite solar cells (PSCs) and their applications in flexible and semi-transparent PSCs. The challenges and research interests of using CNTs in high-efficiency and stable perovskite devices are also discussed.