Article
Chemistry, Multidisciplinary
Haiyang Cheng, Chunki Liu, Jing Zhuang, Jiupeng Cao, Tianyue Wang, Wai-Yeung Wong, Feng Yan
Summary: In this study, KBF4 was introduced as an additive to improve the quality of triple-cation mixed perovskite thin films. It was found that KBF4 can enhance the crystallinity and alleviate microstrain of the films. Additionally, KBF4 can passivate defects in the perovskite grains, leading to longer carrier lifetimes. As a result, the devices showed improved fill factor, enhanced efficiency, and better stability.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xin Zhang, Stijn Eurelings, Andrea Bracesco, Wenya Song, Stijn Lenaers, Wouter Van Gompel, Anurag Krishna, Tom Aernouts, Laurence Lutsen, Dirk Vanderzande, Mariadriana Creatore, Yiqiang Zhan, Yinghuan Kuang, Jef Poortmans
Summary: This study successfully improved the performance of perovskite solar cells (PSCs) by adding trace amounts of bithiophene propylammonium iodide (bi-TPAI) to the surface of gas-quenched perovskite. The bi-TPAI treatment effectively passivates defects and enhances charge carrier extraction, resulting in increased conversion efficiency and operational stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yehui Xu, Shaobing Xiong, Sheng Jiang, Jianming Yang, Dong Li, Hongbo Wu, Xiaomeng You, Yefan Zhang, Zaifei Ma, Jianhua Xu, Jianxin Tang, Yefeng Yao, Zhenrong Sun, Qinye Bao
Summary: It is reported that using daminozide (DA) as an interlayer and additive can effectively suppress nonradiative recombination in perovskite solar cells, leading to improved power conversion efficiency and operational stability.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Xueliang Zhu, Cho Fai Jonathan Lau, Kangwei Mo, Siyang Cheng, Yalun Xu, Ruiming Li, Cheng Wang, Qixian Zheng, Yong Liu, Ti Wang, Qianqian Lin, Zhiping Wang
Summary: The study focuses on the UV-induced degradation of inverted perovskite solar cells and proposes a method to suppress it effectively by modifying the heterojunction with a self-assembled monolayer. The findings provide insights into the long-term stability of perovskite PVs and offer a potential solution to mitigate UV-ID issues.
Article
Energy & Fuels
Shanshan Guo, Xiaoye Zhang, Zhanfeng Li, Yong-Mei Chen, Hua Wang, Yuying Hao
Summary: In this study, two dopant-free polymeric HTMs, PTPDTBT and PDPPTBT, were developed for inverted perovskite solar cells. PDPPTBT showed improved efficiency and stability, leading to high performance PSCs. This work provides a potential strategy for designing efficient and stable PSCs using dopant-free polymeric HTMs.
Article
Chemistry, Multidisciplinary
Peng Chen, Yun Xiao, Lei Li, Lichen Zhao, Maotao Yu, Shunde Li, Juntao Hu, Bin Liu, Yingguo Yang, Deying Luo, Cheng-Hung Hou, Xugang Guo, Jing-Jong Shyue, Zheng-Hong Lu, Qihuang Gong, Henry J. J. Snaith, Rui Zhu
Summary: An improved two-step sequential deposition technique is demonstrated for inverted-structure metal halide perovskite solar cells (PSCs), resulting in significantly enhanced performance. The bottom organic hole-selective layer is treated with a binary modulation system, leading to the refinement of up and buried interfaces for the perovskite films and improved charge transportation. The optimized PSCs achieve a high power conversion efficiency of 23.4% and demonstrate good operational and thermal stability.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Rohit D. Chavan, Daniel Prochowicz, Bartlomiej Bonczak, Marcin Fialkowski, Mohammad Mahdi Tavakoli, Pankaj Yadav, Manushi J. Patel, Sanjeev K. Gupta, Pankaj N. Gajjar, Chang Kook Hong
Summary: Novel solution-processable azahomofullerene derivatives (AHF) serve as effective electron-transport layers in perovskite solar cells, achieving higher photovoltaic performances and improved device stability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yao Zhang, Chunyan Li, Enbing Bi, Tao Wang, Peng Zhang, Xudong Yang, Han Chen
Summary: By constructing a low-dimensional halide/perovskite heterostructure and molecular engineering of the organic spacer, the photovoltaic performance of inverted perovskite solar cells (PSCs) has been significantly improved with high efficiency and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Qi Jiang, Jinhui Tong, Yeming Xian, Ross A. Kerner, Sean P. Dunfield, Chuanxiao Xiao, Rebecca A. Scheidt, Darius Kuciauskas, Xiaoming Wang, Matthew P. Hautzinger, Robert Tirawat, Matthew C. Beard, David P. Fenning, Joseph J. Berry, Bryon W. Larson, Yanfa Yan, Kai Zhu
Summary: In this study, a reactive surface engineering approach was used to enhance the performance of perovskite solar cells with an inverted structure. The resulting p-i-n solar cells showed a high power conversion efficiency of over 25% and remained stable after long-term operation under extreme conditions.
Article
Multidisciplinary Sciences
Shuo Zhang, Fangyuan Ye, Xiaoyu Wang, Rui Chen, Huidong Zhang, Liqing Zhan, Xianyuan Jiang, Yawen Li, Xiaoyu Ji, Shuaijun Liu, Miaojie Yu, Furong Yu, Yilin Zhang, Ruihan Wu, Zonghao Liu, Zhijun Ning, Dieter Neher, Liyuan Han, Yuze Lin, He Tian, Wei Chen, Martin Stolterfoht, Lijun Zhang, Wei-Hong Zhu, Yongzhen Wu
Summary: In this study, an amphiphilic molecular hole transporter with a multifunctional cyanovinyl phosphonic acid group was used to deposit a superwetting underlayer for perovskite deposition. This enabled the formation of high-quality perovskite films with minimized defects at the buried interface. The resulting perovskite film showed excellent photoluminescence properties and achieved a certified PCE of 25.4%, demonstrating its potential for application in solar cells.
Article
Nanoscience & Nanotechnology
Hui Li, Abdulaziz S. R. Bati, Ronan Chu, Guanran Zhang, Yanyan Li, Qianqian Lin, Paul L. Burn, Paul E. Shaw, Ian R. Gentle
Summary: This study demonstrates that the electronic properties of inorganic nickel oxide films can be modified by fluorination, resulting in reduced surface defects and improved performance and stability of perovskite solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Multidisciplinary Sciences
Zhen Li, Bo Li, Xin Wu, Stephanie A. Sheppard, Shoufeng Zhang, Danpeng Gao, Nicholas J. Long, Zonglong Zhu
Summary: Functionalizing the interfaces of multication and halide perovskite solar cells with an organometallic compound, ferrocenyl-bis-thiophene-2-carboxylate (FcTc(2)), enhances their efficiency and stability. The resulting devices exhibit high performance and stability, as demonstrated by tests and continuous operation.
Article
Chemistry, Physical
Chen Tian, Yajie Yan, Shanglei Feng, Jiaou Wang, Yingchun Niu, Xiaoxi Li, Huanxin Ju, Quan Xu, Yang Huang, Hua Dong, Ziqi Liang, Bitao Dong, Lina Li, Yingguo Yang
Summary: Modulation of crystallization and defect passivation using a vanadium carbide MXene in an anti-solvent results in improved performance and stability of perovskite solar cells. The modified perovskite film demonstrates enhanced crystallization, better energy level alignment, and higher hole injection, leading to a significant increase in power conversion efficiency from 20.1% to 23.47% for planar PSCs. The devices also exhibit excellent stability, retaining over 90% of the initial efficiency after 1000 hours of exposure under 40-60% relative humidity at 25 degrees Celsius.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Ke Zhao, Yang Zhao, Yulin Tan, Ke Hu, Zhong-Sheng Wang
Summary: Cerium doping in NiOx significantly enhances its conductivity and hole mobility, reduces the defect density in the perovskite layer, and increases the power conversion efficiency of solar cells.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Multidisciplinary Sciences
Matteo Degani, Qingzhi An, Miguel Albaladejo-Siguan, Yvonne J. Hofstetter, Changsoon Cho, Fabian Paulus, Giulia Grancini, Yana Vaynzof
Summary: This study presents a dual interfacial modification approach by incorporating large organic cations at both the bottom and top interfaces of the perovskite active layer, leading to simultaneous improvement in both open-circuit voltage and fill factor of the devices, reaching a champion device efficiency of 23.7%. This dual interfacial modification is fully compatible with bulk modification of the perovskite active layer by ionic liquids, resulting in efficient and stable inverted architecture devices.
Article
Nanoscience & Nanotechnology
Liuwen Tian, Wenfeng Zhang, Yuelong Huang, Fang Wen, Hua Yu, Yuepeng Li, Qiyun Wang, Changtao Peng, Zhu Ma, Taotao Hu, Lin Du, Meng Zhang
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Energy & Fuels
Chang Liu, Rui Liu, Zhuoneng Bi, Yue Yu, Gang Xu, Hongming Hou, Qiaofeng Wu, Hua Yu, Xueqing Xu
Summary: Novel perovskites with mixed spacers and inorganic slabs were successfully fabricated to enhance the interlayer interaction in 2DRP perovskites. Incorporating NMA cations improved the hydrogen bonding interaction between spacer cations and inorganic slabs, resulting in efficient charge carrier transport. The champion device achieved a power conversion efficiency of 14.21% and retained 85% of its initial efficiency for 1200 hours under humid conditions, demonstrating the potential for highly efficient and air-stable perovskite solar cells.
Review
Energy & Fuels
Yue Yu, Fu Zhang, Tian Hou, Xiaoran Sun, Hua Yu, Meng Zhang
Summary: Gas quenching technique is crucial for preparing high-quality perovskite films for efficient large-area PSCs, showing great potential in application and future research direction for high-performance optoelectronic devices. The scalable technique related to gas quenching for large-area perovskite films and modules is proposed, providing a promising pathway for upscalable production.
Article
Chemistry, Physical
Rui Liu, Yue Yu, Taotao Hu, Fu Zhang, Chang Liu, Hongming Hou, Meng Zhang, Xin Chen, Hua Yu
Summary: This study demonstrates the use of sol-gel method to prepare ideal wetting surface NiOx as a HTM, which can improve the power conversion efficiency of quasi two-dimensional perovskite solar cells, providing a promising alternative to organic polymer HTM materials.
JOURNAL OF POWER SOURCES
(2021)
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.
Article
Chemistry, Physical
Rui Liu, Chang Liu, Yue Yu, Hua Yu, Xueqing Xu
Summary: This article investigates the influence of mixed spacer cations on the aggregation behavior of 2DRP precursors and the carrier transport properties. By introducing a novel spacer cation PyA, large-grain-size 2DRP perovskite films with efficient carrier transport are successfully prepared, leading to a champion efficiency of 13.01% for BA-and PyA-based devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Wenjie Luo, Qingqing Qiu, Rui Liu, Yue Yu, Qiaofeng Wu, Jin Peng, Xudong Cai, Jian Yu, Xin Chen, Hua Yu
Summary: A non-preheating film-casting method is proposed to achieve a highly uniform and phase controllable quasi-2D perovskite film. The resulting film shows good light utilization efficiency, power conversion efficiency, and stability in semitransparent solar cells.
CHEMICAL COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Rui Liu, Xin Hu, Maoxia Xu, Haorong Ren, Hua Yu
Summary: This article summarizes the research progress and application prospects of layered low-dimensional halide perovskites (LDPs), and expounds on the merits and drawbacks of two common LDPs materials from their chemical structure, physicochemical properties, and photovoltaic performance. Furthermore, the synthesis and implementation of LDPs thin films and devices, as well as their optoelectronic properties, are reviewed. Possible strategies to achieve high-performance LDPs solar cells are discussed.
Review
Green & Sustainable Science & Technology
X. Cai, T. Hu, H. Hou, P. Zhu, R. Liu, J. Peng, W. Luo, H. Yu
Summary: As an integral part of PSCs, the HTL plays a crucial role in enhancing the performance of PSCs by increasing hole collection, blocking electrons, and protecting the perovskite from external influences. NiOx, a commonly used HTM, has shown great potential in various photovoltaic devices due to its chemical stability, high hole mobility, and low cost. This review focuses on the preparation methods and strategies of NiOx, including doping and surface modification, as well as the composition and structure variation of the perovskite active layer. The current challenges and recommendations for further development of NiOx-based PSCs are also discussed.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Energy & Fuels
Chen Deng, Xingchong Liu, Zhangfeng Huang, Kaipeng Chen, Haorong Ren, Maoxia Xu, Zetan Zhang, Kexin Hu, Chengbin Yang, Hua Yu
Summary: The introduction of ionic liquid 1,3-dimethylimidazolium methanesulfonate with high ionic conductivity and excellent thermal stability for interface engineering resulted in efficient methylammonium-free perovskite solar cells with a power conversion efficiency of 23.91% and demonstrated air stability. This was achieved through effective interfacial passivation and optimized energy-level alignment.
Article
Chemistry, Multidisciplinary
Jin Peng, Qiaofeng Wu, Hongming Hou, Taotao Hu, Yue Huang, Xudong Cai, Wenjie Luo, Xin Chen, Hua Yu
Summary: The power conversion efficiency (PCE) of inverted perovskite solar cells is mainly affected by the energy level mismatch and unfavorable interfacial reaction between nickel oxide (NiOx) and organic cations of the perovskite. This study introduces interlayer engineering using dual-functional alkaline hypophosphite to address these issues. The use of alkaline hypophosphite increases the valence band maximum of NiOx, aligning the energy band of perovskite solar cells with the best energy level matching using sodium hypophosphite. Additionally, the deposition of alkaline sodium hypophosphite on NiOx reduces the proportion of Ni3+, slowing down the degradation of the perovskite layer caused by the reaction with organic cations. The treated devices show improved open-circuit voltage and retain high efficiency for a prolonged period under ambient conditions, demonstrating a feasible and effective strategy for the fabrication of efficient and air-stable inverted perovskite solar cells.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Green & Sustainable Science & Technology
Hongming Hou, Taotao Hu, Zetan Zhang, Chang Liu, Qiaofeng Wu, Jin Peng, Jiajun Long, Meng Zhang, Hua Yu
Summary: Modifying the NiOx/2D perovskite interface with inorganic salt KPF6 improves the interfacial contact, conductivity, energy level matching, hole carrier extraction ability, and crystallinity of 2D perovskite films in NiOx-based solar cells, leading to an optimal power conversion efficiency of 14.34%. The KPF6 modification also enhances the stability of the device under high temperature and humidity conditions.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Chemistry, Physical
Yue Yu, Rui Liu, Maoxia Xu, Hua Yu
Summary: Surface passivation by EDBEI2 can enhance the efficiency and stability of perovskite solar cells by forming a 2D/3D perovskite structure and reducing surface defects, achieving better energy-level alignment.