Article
Chemistry, Multidisciplinary
Liang Qiao, Tianshi Ye, Pengshuai Wang, Tao Wang, Lin Zhang, Ruitian Sun, Weiyu Kong, Xudong Yang
Summary: By adding potassium hypophosphite, the performance and photostability of perovskite solar cells are improved, leading to an increase in the efficiency of all-perovskite tandem solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Parnian Ferdowsi, Gianluca Bravetti, Moritz C. Schmidt, Efrain Ochoa-Martinez, Shanti Bijani, Aurora Rizzo, Silvia Colella, Ullrich Steiner, Bruno Ehrler, Dominik J. Kubicki, Jovana V. Milic
Summary: Wide-bandgap hybrid halide perovskites can benefit from a host-guest complexation strategy using dibenzo-21-crown-7 to control ion migration at the interface, resulting in improved efficiency and stability of solar cells.
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
Engineering, Environmental
Ting Nie, Junjie Yang, Zhimin Fang, Zhuo Xu, Xiaodong Ren, Xu Guo, Tao Chen, Shengzhong (Frank) Liu
Summary: In this study, a novel amino acid alkylamine, 5-aminolevulinic acid hydrochloride (ALH), was introduced as an additive to enhance the performance of wide-bandgap perovskite solar cells (WBG PSCs). The ALH effectively modulates perovskite crystallization, reduces voltage loss, and suppresses photo-induced phase segregation. The ALH-based PSCs achieve a high power conversion efficiency (PCE) of 21.13% and exhibit improved air and thermal stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Khan Mamun Reza, Ashim Gurung, Behzad Bahrami, Ashraful Haider Chowdhury, Nabin Ghimire, Rajesh Pathak, Sheikh Ifatur Rahman, Md Ashiqur Rahman Laskar, Ke Chen, Raja Sekhar Bobba, Buddhi Sagar Lamsal, Liton Kumar Biswas, Yue Zhou, Brian Logue, Quinn Qiao
Summary: The study presents a method for passivating defects in wide-bandgap perovskites using cation management and secondary growth techniques. Reduction of unreacted PbX2 achieves a highly crystalline perovskite surface, leading to an enhanced efficiency of wide-bandgap perovskite solar cells.
Article
Chemistry, Physical
Yang Yang, Lu Liu, Jianxun Li, Shuai Zhao, Zhen Chang, Le Wang, Dongqi Yu, Kai Wang, Shengzhong (Frank) Liu
Summary: In this work, we demonstrate an ambient aging process that appears to further improve the performance of wide-bandgap perovskite solar cells. The aging process induces secondary recrystallization and reduces defect density through air passivation and halogen redistribution. This leads to suppressed nonradiative recombination and prolonged carrier lifetime. The champion wide-bandgap perovskite solar cell achieved a power-conversion efficiency of 20.12% and a high open-circuit voltage of 1.27 V, making it one of the highest-performing wide-bandgap solar cells reported. This work reveals the impact of the air aging process on perovskite film properties and demonstrates a scalable post-treatment strategy for producing state-of-the-art semiconducting films.
Article
Engineering, Environmental
Mengmeng Chen, Gaurav Kapil, Liang Wang, Shahrir Razey K. Sahamir, Ajay Baranwal, Kohei Nishimura, Yoshitaka Sanehira, Zheng Zhang, Muhammad Akmal Kamarudin, Qing Shen, Shuzi Hayase
Summary: This study successfully improved the efficiency and stability of inverted tin-based perovskite solar cells by using a bilayer structure of PEDOT-PSS and 2PACz monolayer.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Wanhai Wang, Xin Liu, Juncheng Wang, Cong Chen, Jiangsheng Yu, Dewei Zhao, Weihua Tang
Summary: A new self-assembled molecule (SAM) based hole transport material (HTM) is designed for high-efficiency perovskite solar cells (PSCs), all-perovskite tandem solar cells (TSCs), and organic solar cells (OSCs). The SAM exhibits improved charge transfer and reduced non-radiative recombination losses, leading to higher efficiency and stability of these solar cells.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Liu Yang, Yongbin Jin, Zheng Fang, Jinyan Zhang, Ziang Nan, Lingfang Zheng, Huihu Zhuang, Qinghua Zeng, Kaikai Liu, Bingru Deng, Huiping Feng, Yujie Luo, Chengbo Tian, Changcai Cui, Liqiang Xie, Xipeng Xu, Zhanhua Wei
Summary: By forming a 2D perovskite passivation layer on top of the wide-bandgap perovskite solar cell active layer, the non-radiative recombination and open-circuit voltage deficits can be addressed, improving the photovoltaic performance.
NANO-MICRO LETTERS
(2023)
Article
Engineering, Environmental
Padmini Pandey, SungWon Cho, Shuzi Hayase, Jung Sang Cho, Dong-Won Kang
Summary: This review focuses on the existing challenges in Pb-free wide bandgap perovskite solar cells (PSCs) and discusses new strategies, such as compositional engineering and defect passivation, to enhance device performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Nanoscience & Nanotechnology
Ting Nie, Zhimin Fang, Xiaodong Ren, Yuwei Duan, Shengzhong (Frank) Liu
Summary: Perovskite-based tandem solar cells have attracted increasing interest due to their potential to surpass the Shockley-Queisser limit for single-junction solar cells. Wide-bandgap perovskites act as front absorbers in tandem architectures, offering higher open-circuit voltage and reduced thermalization losses. The main challenges for wide-bandgap perovskite solar cells (PSCs) include large open-circuit voltage deficit and severe photo-induced phase separation. Recent research efforts have made significant progress in addressing these issues and improving the efficiency and stability of wide-bandgap PSCs for tandem applications.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ruyue Wang, Minghua Li, Zongwen Ma, Zhangwei He, Yiman Dong, Yuling Zhang, Zhiyang Xu, Gangfeng Su, Zhan'ao Tan
Summary: A facile buried interface treatment by hexachlorotriphosphazene is developed to suppress the large open-circuit voltage (V-oc) loss in wide bandgap perovskite solar cells (PerSCs) and improve efficiency. The PerSCs with a [Cs(0.22)FA(0.78)Pb(I0.85Br0.15)(3)](0.97)(MAPbCl(3))(0.03) (1.67 eV) absorber achieve an efficiency of 21.47% and a V-oc of 1.21 V (V-oc loss of 0.46 V). Importantly, the unencapsulated PerSCs maintain 90% of the initial efficiency after aging 500 h in N-2.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yue Yu, Rui Liu, Chang Liu, Xiao-Lei Shi, Hua Yu, Zhi-Gang Chen
Summary: The use of 4-fluoro-phenylethylammonium iodide (FPEAI) as a dual-functional agent promotes oriented crystallization and comprehensive passivation of wide-bandgap perovskite solar cells (WBG PSCs), resulting in enhanced photovoltaic performance and stability.
ADVANCED ENERGY MATERIALS
(2022)
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
Materials Science, Multidisciplinary
Zhimin Fang, Lingbo Jia, Nan Yan, Xiaofen Jiang, Xiaodong Ren, Shangfeng Yang, Shengzhong (Frank) Liu
Summary: In this study, an in situ defect passivation strategy was proposed to reduce nonradiative recombination and minimize open-circuit voltage loss in wide-bandgap inverted perovskite solar cells. The proton-transfer-induced passivation effectively improved the power conversion efficiency and photostability of the cells.
