Article
Chemistry, Multidisciplinary
Wenjing Hou, Mengna Guo, Yunzhen Chang, Sheng Zhu, Huan Bi, Qing Shen, Yaoming Xiao, Gaoyi Han
Summary: By employing a Rb2SO4 additive to passivate the Pb2+ defects in a perovskite film and forming PbSO(4) in situ, the surface and grain boundaries of the perovskite film are covered to prevent decomposition by moisture. Ultimately, a device modified with Rb2SO4 achieved improved power conversion efficiency (22.25%) and long-term stability.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jiwei Liang, Xuzhi Hu, Chen Wang, Chao Liang, Cong Chen, Meng Xiao, Jiashuai Li, Chen Tao, Guichuan Xing, Rui Yu, Weijun Ke, Guojia Fang
Summary: This study reveals the origins and influences of metallic lead (Pb-0) in metal-halide perovskites, and provides a strategy for avoiding the formation of detrimental Pb-0 byproducts. This has significant implications for enhancing the performance of devices such as perovskite solar cells.
Article
Multidisciplinary Sciences
Zhenghong Dai, Srinivas K. Yadavalli, Min Chen, Ali Abbaspourtamijani, Yue Qi, Nitin P. Padture
Summary: The use of iodine-terminated self-assembled monolayer (I-SAM) in perovskite solar cells (PSCs) leads to increased adhesion toughness at the interface, improved power conversion efficiency, reduced hysteresis, and enhanced operational stability. This is attributed to a decrease in hydroxyl groups at the interface and higher interfacial toughness achieved with I-SAM treatment.
Article
Nanoscience & Nanotechnology
Anat Itzhak, Xu He, Adi Kama, Sujit Kumar, Michal Ejgenberg, Antoine Kahn, David Cahen
Summary: Using RF sputtering to fabricate NiOx and covering it with a NiyN layer in vacuum can improve the efficiency and stability of solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Jiang Liu, Erkan Aydin, Jun Yin, Michele De Bastiani, Furkan H. Isikgor, Atteq Ur Rehman, Emre Yengel, Esma Ugur, George T. Harrison, Mingcong Wang, Yajun Gao, Jafar Iqbal Khan, Maxime Babics, Thomas G. Allen, Anand S. Subbiah, Kaichen Zhu, Xiaopeng Zheng, Wenbo Yan, Fuzong Xu, Michael F. Salvador, Osman M. Bakr, Thomas D. Anthopoulos, Mario Lanza, Omar F. Mohammed, Frederic Laquai, Stefaan De Wolf
Summary: Adding carbazole as an additive to the perovskite precursor solution can enhance the stability and performance of perovskite solar cells in a monolithic tandem configuration. The improved devices demonstrate a high stabilized PCE and excellent performance in hot and humid outdoor environments, showing enhanced phase stability.
Review
Chemistry, Multidisciplinary
Junzhi Ye, Mahdi Malekshahi Byranvand, Clara Otero Martinez, Robert L. Z. Hoye, Michael Saliba, Lakshminarayana Polavarapu
Summary: Lead-halide perovskites have emerged as leading candidates for next-generation LEDs and solar cells due to their high photoluminescence quantum yields. Defects at the surface and grain boundaries significantly impact charge-carrier transport and efficiency, necessitating the development of effective passivation strategies for performance improvement.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Min Chen, Qingshun Dong, Chuanxiao Xiao, Xiaopeng Zheng, Zhenghong Dai, Yantao Shi, Joseph M. Luther, Nitin P. Padture
Summary: In this study, we demonstrate an innovative approach in compositional and interfacial engineering to achieve Pb-free flexible perovskite solar cells with the highest reported efficiency to date, along with enhanced operational stability and mechanical reliability. The key to this approach lies in the alloying of FASnI(3) metal halide perovskite thin film with Ge2+ to stabilize the Sn2+ oxidation state, and the use of a NiOx hole-transport layer, resulting in the in situ formation of a thin amorphous GeO2 native oxide layer at the NiOx/FASn(0.9)Ge(0.1)I(3) interface, which passivates the critical interface and enhances interfacial mechanical bonding.
ACS ENERGY LETTERS
(2022)
Article
Multidisciplinary Sciences
Stefania Cacovich, Guillaume Vidon, Matteo Degani, Marie Legrand, Laxman Gouda, Jean-Baptiste Puel, Yana Vaynzof, Jean-Francois Guillemoles, Daniel Ory, Giulia Grancini
Summary: Interface engineering using passivating agents is an effective strategy to improve the performance of perovskite solar cells. This study investigates the interface and device physics of high efficiency inverted solar cells, quantifying charge recombination and losses. The results show that organic passivation mainly affects the perovskite/PCBM interface, and the use of organic passivation maximizes the photovoltaic figures of merit.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Lidia Romani, Andrea Speltini, Francesco Ambrosio, Edoardo Mosconi, Antonella Profumo, Marcello Marelli, Serena Margadonna, Antonella Milella, Francesco Fracassi, Andrea Listorti, Filippo De Angelis, Lorenzo Malavasi
Summary: This study presents a water-stable metal halide perovskite and demonstrates its application in promoting photocatalysis in aqueous medium, leading to impressive hydrogen evolution rate. The composite with g-C3N4 shows synergistic activity and efficient photocatalytic performance in water, paving the way for a new class of light-driven catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Bo Li, Zhen Li, Danpeng Gao, Xin Wu, Xintong Li, Chunlei Zhang, Shuai Li, Jianqiu Gong, Dong Zhang, Xiangfan Xie, Shuang Xiao, Haipeng Lu, Mingjie Li, Zonglong Zhu
Summary: By designing long-chain alkylamines as crystallization buffer molecules, the residual strain in tin perovskite films was released, thus improving the photovoltaic performance and stability of lead-stabilized tin perovskite solar cells (TPSCs).
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Physical
Tianhao Wu, Xiao Liu, Xinhui Luo, Xuesong Lin, Danyu Cui, Yanbo Wang, Hiroshi Segawa, Yiqiang Zhang, Liyuan Han
Summary: Efficient and stable development of lead-free perovskite solar cells (PSCs) using tin as a promising candidate for high-performance, eco-friendly photovoltaic technology has been reviewed. Approaches toward efficiency improvement and challenges in reaching higher PCE and scalable production for tin PSCs have been discussed in this paper with the goal of accelerating their commercialization.
Article
Materials Science, Multidisciplinary
Wentao Chen, Kuo Su, Yuqiong Huang, Keith Gregory Brooks, Sachin Kinge, Bao Zhang, Yaqing Feng, Mohammad Khaja Nazeeruddin, Yi Zhang
Summary: In this study, AHPD was introduced as an additive to improve the performance of Sn-Pb mixed perovskite solar cells. AHPD effectively suppressed Sn2+ oxidation and reduced defects, while also retarding crystallization rate and improving carrier transport.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Multidisciplinary Sciences
Zhuang Zhang, Huanhuan Wang, T. Jesper Jacobsson, Jingshan Luo
Summary: In the field of perovskite solar cells, evaluating and comparing stability has always been a challenge. This study proposes a single indicator to describe device stability and conducts a statistical analysis using data from over 7000 devices, providing important insights for achieving more stable perovskite solar cells.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Tao Zhu, Lening Shen, Hanlin Chen, Yongrui Yang, Luyao Zheng, Rui Chen, Jie Zheng, Junpeng Wang, Xiong Gong
Summary: Conjugated molecules have been effectively utilized to enhance the performance of perovskite solar cells, with the incorporation of novel conjugated aniline leading to improved efficiency and stability in the reported study. This demonstrates the potential of incorporating conjugated molecules as organic spacer cations to create 2D perovskites on top of 3D perovskites for high-performance PSCs.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Nanoscience & Nanotechnology
Zheng Zhang, Muhammad Akmal Kamarudin, Ajay Kumar Baranwal, Liang Wang, Gaurav Kapil, Shahrir Razey Sahamir, Yoshitaka Sanehira, Mengmeng Chen, Qing Shen, Shuzi Hayase
Summary: Defects at the surfaces and grain boundaries of tin halide perovskite solar cells hinder their performance improvement. Liquid surface passivation is commonly used to decrease these defects, but it decreases the short-circuit current density (Jsc). In this study, a vapor passivation method using solvent and passivation molecules is introduced, which enhances the efficiency and stability of the solar cells without decreasing Jsc.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Ziren Zhou, Hong Wei Qiao, Xiaolong Li, Chen Lin, Jin Xie, Yiheng Shi, Zeqing Lin, Bing Ge, Mengjiong Chen, Yi Zheng Jin, Shuang Yang, Yu Hou, Hua Gui Yang
Summary: By fumigating colloidal inorganic perovskite films with dual-O-donor ethyl acetate (EA), a ripening barrier is imposed leading to an intermediate state for processing high-crystallinity and oriented perovskite films with improved photophysical properties, ultimately achieving an optimized PCE of 16.6% on a wide-bandgap (1.9 eV) perovskite absorber.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Bing Ge, Zi Ren Zhou, Xue Feng Wu, Li Rong Zheng, Sheng Dai, Ai Ping Chen, Yu Hou, Hua Gui Yang, Shuang Yang
Summary: This study introduces a novel hole transport layer (HTL) for perovskite solar cells (PSCs), composed of self-organized percolative narrow bandgap oxides and wide bandgap SrCO3 oxysalt, which significantly improves the power conversion efficiency of PSCs.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Can Zou, Mengjiong Chen, Ziren Zhou, Shuang Yang, Yu Hou, Huagui Yang
Summary: This study presents a novel hierarchical Co3O4/graphene oxide composite material as the CE material for DSSCs, demonstrating photovoltaic performance comparable to traditional Pt CE, attributed to its excellent electrocatalytic activity and high conductivity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Jinming Wu, Lixiang Wang, Anbo Feng, Shuang Yang, Ning Li, Xiaomei Jiang, Nianqiao Liu, Shengdan Xie, Xinbo Guo, Yanjun Fang, Zhaolai Chen, Deren Yang, Xutang Tao
Summary: This study achieved self-powered and highly sensitive single-crystal perovskite X-ray detectors by controlling crystal thickness and optimizing carrier transport properties. The incorporation of formamidinium cation into methylammonium lead triiodide increased the mobility-lifetime product of the crystals, leading to a record X-ray detection sensitivity. This work represents an effective way to achieve self-powered perovskite X-ray detectors with both high sensitivity and low detection limit.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chun Fang Wen, Min Zhou, Peng Fei Liu, Yuanwei Liu, Xuefeng Wu, Fangxin Mao, Sheng Dai, Beibei Xu, Xue Lu Wang, Zheng Jiang, P. Hu, Shuang Yang, Hai Feng Wang, Hua Gui Yang
Summary: Stable Cu-S motifs dispersed in a Cu-based metal-organic framework precatalyst can enhance the efficiency of converting CO2 to C2+ products. The presence of partially oxidized Cu delta+ species stabilized by the Cu-S motif during CO2RR leads to high ethylene selectivity and current density.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Xinyi Liu, Huijun Lian, Ziren Zhou, Can Zou, Jin Xie, Fan Zhang, Haiyang Yuan, Shuang Yang, Yu Hou, Hua Gui Yang
Summary: A chemical etching strategy using ionic liquids is developed to improve the efficiency and environmental resilience of perovskite-based optoelectronic devices.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jinming Wu, Yongqiang Zhang, Shuang Yang, Zhaolai Chen, Wei Zhu
Summary: Metal halide perovskite single-crystal detectors offer low noise, high sensitivity, and fast response. However, the limited photoresponse range of widely studied lead-based perovskite single crystals hampers their application in near-infrared detection. This study successfully extended the absorption range by incorporating tin into methylammonium lead iodide single crystals, enabling sensitive near-infrared detection with good operational stability.
FRONTIERS IN CHEMISTRY
(2022)
Review
Energy & Fuels
Yichu Zheng, Shuang Yang
Summary: The review examines the structural and performance instability of perovskites and their degradation causes under various environmental stressors. It further summarizes state-of-the-art strategies to stabilize perovskite layer in solar cells and elucidates the microscopic reasons for improved environmental tolerance. In addition, extrinsic factors to enhance the environmental tolerance of perovskites are highlighted, providing potential guidance in extending the lifetime of perovskite devices.
Article
Chemistry, Multidisciplinary
Fan Zhang, Ziren Zhou, Can Zou, Xinyi Liu, Jin Xie, Da Liu, Shuang Yang, Yu Hou, Hua Gui Yang
Summary: NiOx is a promising HTM for perovskite photovoltaics, but its weak performance is attributed to insufficient electrical property and interfacial contact. This research developed a self-formed PbI2/NiOx interface to stabilize Ni3+ centers, enhancing electrical transport and band alignment. Combining UVO treatment and sequential deposition increased density of Ni3+ centers and their stability through the PbI2 interface. These improvements collectively led to fast hole extraction and low energy loss across the PbI2/NiOx interface, resulting in PCEs of over 19%.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Da Liu, Mengjiong Chen, Zhanpeng Wei, Can Zou, Xinyi Liu, Jin Xie, Qing Li, Shuang Yang, Yu Hou, Hua Gui Yang
Summary: This study demonstrates a molecular buffer interface and sequential deposition method to achieve strain-free perovskite films. By releasing the stress of PbI2, the buffer layer increases the layer spacing and favors perovskite phase conversion. The optimized perovskite solar cell device exhibits high efficiency, high fill factor, and good long-term stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Ziren Zhou, Hui Jun Lian, Jin Xie, Wen Cheng Qiao, Xue Feng Wu, Yiheng Shi, Xue Lu Wang, Sheng Dai, Haiyang Yuan, Yu Hou, Shuang Yang, Hua Gui Yang
Summary: Chemical passivation is important for stabilizing solar cell operation by preventing surface ion migration. The configuration of organic cations determines their adsorption energetics on perovskite surfaces, impacting the uniformity of perovskite passivation layers. In this study, an anisotropic adsorption behavior was demonstrated, enabling a conformal passivation layer and improving the efficiency and stability of solar cells.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Chemistry, Physical
Yichu Zheng, Bing Ge, Li Rong Zheng, Yu Hou, Shuang Yang, Hua Gui Yang
Summary: NiCrO3 as a new candidate material for HTLs in PSCs, showing better electrical conductivity and deeper valence band, can improve hole transport and interfacial band alignment for higher cell efficiency. NiCrO3 also exhibits improved charge extraction and slower charge recombination rates. This study opens up possibilities for ternary metal oxides as new materials for high-performance PSCs.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Materials Science, Multidisciplinary
Junlin Lu, Weijian Chen, Chunhua Zhou, Shuang Yang, Chong Wang, Rongfei Wang, Xin Wang, Zhixing Gan, Baohua Jia, Xiaoming Wen
Summary: This study investigates the carrier dynamics of 2D Ruddlesden-Popper perovskites with different numbers of layers using transient spectroscopic techniques. The results show that perovskites with varying numbers of layers exhibit distinct exciton and free carrier behaviors, potentially due to the influence of edge states.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Yuze Lin, Ye Liu, Shangshang Chen, Shen Wang, Zhenyi Ni, Charles H. Van Brackle, Shuang Yang, Jingjing Zhao, Zhenhua Yu, Xuezeng Dai, Qi Wang, Yehao Deng, Jinsong Huang
Summary: By mechanically polishing to remove the defective surface layers in polycrystalline films, the stability of perovskite films is significantly enhanced, allowing them to maintain high efficiency under continuous illumination and high temperature conditions.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Chun Fang Wen, Min Zhou, Peng Fei Liu, Yuanwei Liu, Xuefeng Wu, Fangxin Mao, Sheng Dai, Beibei Xu, Xue Lu Wang, Zheng Jiang, P. Hu, Shuang Yang, Hai Feng Wang, Hua Gui Yang
Summary: In this study, a strategy based on local sulfur doping of a Cu-based metal-organic framework precatalyst was developed for enhancing ethylene selectivity in the CO2 reduction reaction. Experimental and theoretical studies showed that the Cu-S motif played a key role in the catalytic process of the precatalyst.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)