Article
Chemistry, Multidisciplinary
Chen Wang, Wenlong Shao, Jiwei Liang, Cong Chen, Xuzhi Hu, Hongsen Cui, Chenwei Liu, Guojia Fang, Chen Tao
Summary: In this study, lead thiocyanate and 2-thiopheneethylammonium chloride were synergistically used to passivate and stabilize wide bandgap perovskites, resulting in reduced open-circuit voltage loss and improved efficiency of the solar cells. Furthermore, the interconnection layer was optimized to construct high-voltage perovskite/organic tandem solar cells.
Article
Chemistry, Multidisciplinary
Hongling Guan, Wenjun Zhang, Jiwei Liang, Chen Wang, Xuzhi Hu, Dexing Pu, Lishuai Huang, Yansong Ge, Hongsheng Cui, Yuanrong Zou, Guojia Fang, Weijun Ke
Summary: A post-treatment strategy is proposed to form a 2D top layer on wide-bandgap perovskite solar cells, which effectively passivates defects and suppresses phase segregation. The resulting perovskite solar cells with a 1.66 eV-bandgap achieve high power conversion efficiencies and show promise for multi-junction tandem solar cell applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shan Jiang, Zhiyang Xu, Fuzhi Wang, Shilei Tian, Yang Wang, Chenghao Li, Zhan'ao Tan
Summary: Constructing monolithic tandem solar cells (TSCs) by utilizing wide bandgap perovskite materials and low bandgap organic materials as absorber layers for front and rear subcells can effectively break the radiative efficiency limit for single-junction solar cells. In addition to the optimization of the subcells, the interconnection layer (ICL) plays a crucial role in recombining charges. This review summarizes the strategies for optimizing wide bandgap perovskites, narrow bandgap organic materials, and ICLs in monolithic perovskite/organic TSCs.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hongling Guan, Shun Zhou, Shiqiang Fu, Dexin Pu, Xuepeng Chen, Yansong Ge, Shuxin Wang, Chen Wang, Hongsen Cui, Jiwei Liang, Xuzhi Hu, Weiwei Meng, Guojia Fang, Weijun Ke
Summary: In this study, a crystal orientation regulation strategy by introducing dodecyl-benzene-sulfonic-acid as an additive in perovskite precursors is proposed to address the challenges faced by wide-bandgap (WBG) perovskite solar cells, including substantial open-circuit voltage (VOC) deficit and severe photo-induced halide segregation. The proposed method promotes the desired crystal orientation, passivates defects, and mitigates photo-induced halide phase segregation, leading to reduced nonradiative recombination, minimized VOC deficits, and enhanced operational stability of the devices. The resulting methylamine-free perovskite solar cells achieve impressive power conversion efficiencies (PCEs) of 22.40% and 20.13% for opaque and semitransparent devices, respectively. Furthermore, four-terminal tandem cells comprising WBG perovskite top cells and lower bandgap perovskite bottom cells showcase a remarkable PCE of 28.06%.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Yue Yu, Rui Liu, Fu Zhang, Chang Liu, Qiaofeng Wu, Meng Zhang, Hua Yu
Summary: The introduction of alkali pseudo-halide KBF4 into the perovskite precursor solution results in a less defect WBG perovskite film, leading to improved performance of solar cells. The interstitial occupancy of K+ in the perovskite lattice and the suppression of recombination by BF4 help inhibit ion migration and reduce trap density, enhancing the overall efficiency of the solar cells.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yun Tang, Yuchao Zhang, Xinming Zhou, Ting Huang, Kai Shen, KangNing Zhang, Xiaoyan Du, Tingting Shi, Xiudi Xiao, Ning Li, Christoph J. Brabec, Yaohua Mai, Fei Guo
Summary: High-quality wide-bandgap perovskite films are crucial for efficient tandem solar cells. However, the current method of depositing these films using laboratory spin-coating limits their commercial viability. This study demonstrates that single-solvent NMP with blade-coating can produce dense and uniform wide-bandgap perovskite films, and the use of stable intermediate adduct enables well-controlled crystallization kinetics. Additionally, the use of a 2D/3D layered heterojunction and an interconnection layer of SnO2/Au/PEDOT:PSS leads to the fabrication of monolithic perovskite-organic tandem solar cells with high efficiency and impressive open-circuit voltage.
Article
Chemistry, Multidisciplinary
Hui Liu, Jing Dong, Pengyang Wang, Biao Shi, Ying Zhao, Xiaodan Zhang
Summary: Efficient and stable wide bandgap perovskite solar cells (PSCs) with high open-circuit voltage and power conversion efficiency were achieved by using ferulic acid transformation and optimizing device structure. By optimizing the spin-coating method, the efficiency of the device was increased to nearly 20%.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jie Zhao, Anthony S. R. Chesman, Junlin Yan, Luke J. Sutherland, Jacek Jasieniak, Jianfeng Lu, Wenxin Mao, Udo Bach
Summary: This study investigates the improvement of the quality of wide-bandgap (WBG) perovskite FA0.83Cs0.17Pb-(I0.8Br0.2)3 by incorporating lead chloride (PbCl2) into a lead acetate (PbAc2)-based precursor, resulting in enlarged grain sizes and improved crystallinity. The enhanced film quality leads to the suppression of nonradiative recombination and a reduction in defect density. Efficient WBG perovskite solar cells (1.66 eV) with an efficiency of 19.3% and a high Voc of 1.22 V were fabricated using a facile one-step spin-coating method without the need for an antisolvent. Notably, the unencapsulated devices retained 90% of their initial power conversion efficiency after storage in a dry box (10% humidity) for 800 h.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Bo Chen, Zhenhua Yu, Arthur Onno, Zhengshan Yu, Shangshang Chen, Jiantao Wang, Zachary C. Holman, Jinsong Huang
Summary: This paper reports on a bifacial all-perovskite tandem structure that achieves an equivalent efficiency of 29.3% under a back-to-front irradiance ratio of 30. By embedding a light-scattering micrometer-sized particle layer and using a nonacidic hole transport layer, the efficiency of semitransparent Pb-Sn cells is increased from 15.6% to 19.4%, enabling the fabrication of efficient bifacial all-perovskite tandem devices.
Article
Energy & Fuels
Zhaojun Su, Dacheng Xu, Qing Ma, Kun Gao, Cheng Zhang, Chunfang Xing, Shibo Wang, Wei Shi, Xinyu Wang, Kun Li, Jingshu Hui, Xinbo Yang
Summary: This study reports an atomic layer deposited ZnO-SnO2 bilayer electron transport layer (ETL) for wide-bandgap mixed-halide perovskite solar cells (PSCs). The bilayer exhibits high uniformity and conformality over a large area. It shows a matched band alignment with wide-bandgap perovskite, resulting in efficient electron extraction and transport, and achieves a champion power conversion efficiency of 18.1% with an ultrahigh open-circuit voltage (V-oc) of 1.233 V.
Article
Energy & Fuels
Yue Yu, Rui Liu, Chang Liu, Tian Hou, Qiaofeng Wu, Meng Zhang, Hua Yu
Summary: This study proposes a passivation strategy of 2D/3D heterostructures to improve the conductivity and stability of wide-bandgap perovskite solar cells (PSCs), achieving high open-circuit voltage. This approach enhances the oriented transport of carriers and reduces nonradiative recombination, leading to high-performance and stable PSCs.
Review
Chemistry, Multidisciplinary
Yao Tong, Adel Najar, Le Wang, Lu Liu, Minyong Du, Jing Yang, Jianxun Li, Kai Wang, Shengzhong (Frank) Liu
Summary: This review summarizes the progress of wide-bandgap mixed halide perovskite solar cells and discusses their diverse applications in different fields and the challenges they face.
Article
Chemistry, Multidisciplinary
Jianghui Zheng, Weiyuan Duan, Yuzhen Guo, Zijun C. Zhao, Haimang Yi, Fa-Jun Ma, Laura Granados Caro, Chuqi Yi, Jueming Bing, Shi Tang, Jiangtao Qu, Kean Chern Fong, Xin Cui, Yan Zhu, Limei Yang, Andreas Lambertz, Md Arafat Mahmud, Hongjun Chen, Chwenhaw Liao, Guoliang Wang, Marko Jankovec, Cheng Xu, Ashraf Uddin, Julie M. Cairney, Stephen Bremner, Shujuan Huang, Kaining Ding, David R. McKenzie, Anita W. Y. Ho-Baillie
Summary: This article reports an elegant method to integrate perovskites and Si-heterojunction tandem solar cells using an ultra-thin indium tin oxide (ITO) interlayer, which overcomes the efficiency limit of single junction solar cells. It is found that a 1.7 nm ITO interlayer provides efficient interfacing between the silicon and perovskite subcells. Thinner ITO interlayers result in discontinuous films, while thicker ITO interlayers are less effective in localizing shunts.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Guanshui Xie, Huan Li, Xin Wang, Jun Fang, Dongxu Lin, Daozeng Wang, Sibo Li, Sisi He, Longbin Qiu
Summary: Wide-bandgap perovskite solar cells (PSCs) and narrow-bandgap organic solar cells (OSCs) integrated tandem solar cells (TSCs) have great potential for overcoming the limitations of single junction structures, particularly with the use of orthogonal solvents for each subcell. However, high bromine content in wide-bandgap perovskites leads to phase segregation and voltage loss, while the commonly used interconnection layer (ICL) in TSCs results in significant optical loss. In this study, a simplified SnOX buffer layer is developed as the ICL in perovskite-organic TSCs, which effectively reduces phase segregation and improves light harvesting in the near-infrared region.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yue-Min Xie, Qin Yao, Zixin Zeng, Qifan Xue, Tianqi Niu, Ruoxi Xia, Yuanhang Cheng, Francis Lin, Sai-Wing Tsang, Alex K-Y Jen, Hin-Lap Yip, Yong Cao
Summary: Monolithic perovskite/organic tandem solar cells have gained increasing attention due to their high efficiency and easy fabrication. Improving the performance of these cells requires wide-bandgap perovskites and low-bandgap organic bulk-heterojunction rare cells. This study successfully synthesized high-efficiency perovskite solar cells and tandem cells through optimization methods.
ADVANCED FUNCTIONAL MATERIALS
(2022)
