Review
Chemistry, Multidisciplinary
Yufeng Li, Changyu Yang, Weisi Guo, Tianwei Duan, Zhongmin Zhou, Yuanyuan Zhou
Summary: The superior tolerance of all-inorganic perovskites compared to their hybrid counterparts makes them promising candidates for solar cells. In recent years, significant improvements have been achieved in certified power conversion efficiencies of all-inorganic perovskite solar cells (PSCs), highlighting their potential for practical applications. Group IVA elements, including Pb, Sn, and Ge, have been extensively studied for perovskites, and their incorporation into all-inorganic perovskite structures provides opportunities for stabilizing the photoactive phase and tailoring the bandgap structure. This review analyzes the design principles, discusses the progress in PSCs with mixed group IVA cations, and provides perspectives on future research efforts for high-performance Pb-less and Pb-free all-inorganic PSCs.
Article
Multidisciplinary Sciences
Renxing Lin, Yurui Wang, Qianwen Lu, Beibei Tang, Jiayi Li, Han Gao, Yuan Gao, Hongjiang Li, Changzeng Ding, Jin Wen, Pu Wu, Chenshuaiyu Liu, Siyang Zhao, Ke Xiao, Zhou Liu, Changqi Ma, Yu Deng, Ludong Li, Fengjia Fan, Hairen Tan
Summary: All-perovskite tandem solar cells with an immiscible 3D/3D bilayer heterojunction achieve a record-high PCE of 28% and retain over 90% of their initial performance after 600 hours of continuous operation.
Article
Engineering, Environmental
Mustafa K. A. Mohammed, Ahmed Esmail Shalan, M. Dehghanipour, H. R. Mohseni
Summary: The research focuses on improving the stability and efficiency of perovskite solar cells (PSCs) through the fabrication of a 3D/2D heterostructure layer and the introduction of FABr additive. Results show that the PCE of PSCs can be increased significantly with the FABr modification, indicating a practical step towards PSC development.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Cuiting Kang, Shuaihang Xu, Huashang Rao, Zhenxiao Pan, Xinhua Zhong
Summary: A strategy for constructing an all-inorganic 2D/3D CsPb2I4Br/CsPbI2Br bulk heterojunction (BHJ) by in situ reaction of excess PbI2 in a precursor solution with CsPbI2Br during annealing is proposed. The formed 2D/3D BHJ effectively passivates defects in 3D CsPbI2Br and reduces nonradiative recombination loss in carbon electrode-based perovskite solar cells (C-PSCs). The optimized C-PSCs achieve an open-circuit voltage of 1.32 V and an efficiency of 15.25%, which are the best results for CsPbI2Br-based C-PSCs.
ACS ENERGY LETTERS
(2023)
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)
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.
Review
Chemistry, Multidisciplinary
Dejian Yu, Fei Cao, Chenliang Su, Guichuan Xing
Summary: Three-dimensional (3D) halide perovskite solar cells have poor stability, but reducing dimensionality to 2D can improve stability at the cost of efficiency. The restricted charge transport in the mixed phasic 2D/3D layer is the main reason for low efficiency. Understanding the photophysical dynamics is important for understanding the restriction mechanism. The most accepted model currently assumes a type I band alignment between the 2D and 3D phases, but our recent research suggests that the 2D/3D HP interface may impede charge transport.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Xiaopeng Yue, Xing Zhao, Bingbing Fan, Yingying Yang, Luyao Yan, Shujie Qu, Hao Huang, Qiang Zhang, Huilin Yan, Peng Cui, Jun Ji, Junfeng Ma, Meicheng Li
Summary: Mixed 2D/3D perovskite solar cells show promising performances in efficiency and stability. The formation of TFPhFA(+) dipole layer and the coordination of TFPhFA(+) cations with perovskite, as well as the recrystallization of 3D perovskite induced by Cl- ions, contribute synergistically to the increase of efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jin Tan, Jie Dou, Qunwei Tang
Summary: A photovoltaic-hydrovoltaic-coupled carbon-based, all-inorganic Cs0.91Rb0.09PbBr3 perovskite solar cell achieved a peak power conversion efficiency of 9.40% under one sun illumination and a maximum voltage of 0.39 V and current of 1.40 mu A in a flowing vapor atmosphere.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Jian He, Jie Su, Zhenhua Lin, Jing Ma, Long Zhou, Siyu Zhang, Shengzhong Liu, Jingjing Chang, Yue Hao
Summary: The study investigates the effects of mixed passivation on all-inorganic perovskite (CsPbI2Br) solar cells for the first time, resulting in improved film quality and energy level alignment. The passivation enhances hole extraction, drives interface electron separation, suppresses charge recombination, and achieves a high open-circuit voltage and fill factor in the devices. Moreover, the treated devices exhibit remarkable long-term stability with minimal efficiency loss after storage in a glove box for over 1000 hours without encapsulation.
Article
Chemistry, Physical
Hang Su, Lu Zhang, Yucheng Liu, Yingjie Hu, Bobo Zhang, Jiaxue You, Xinyi Du, Jing Zhang, Xiaodong Ren, Jing Gou, Shengzhong (Frank) Liu
Summary: By designing specific molecular structures for passivators and optimizing the interactions between passivators and [PbI6](4-) octahedron, the efficiency and stability of perovskite solar cells have been significantly improved. By adjusting the molecular polarity of the passivator, a general passivation model has been established, enabling the solar cells to exhibit good reproducibility and long-term stability.
Article
Chemistry, Multidisciplinary
J. Hu, X. Xiong, W. Guan, Z. Xiao, C. Tan, H. Long
Summary: All-inorganic cesium-based perovskites have gained significant attention in the field of perovskite photovoltaic devices due to their superior environmental stability and efficiency. This review article provides a comprehensive discussion on the materials, structure, preparation techniques, and kinetics of all-inorganic perovskites. The advantages and shortcomings of different strategies presented in recent publications are also analyzed, and future research directions and commercial applications are highlighted.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Shuang-Qiao Sun, Xiuwen Xu, Qi Sun, Qin Yao, Yating Cai, Xin-Yi Li, Yan-Lin Xu, Wei He, Min Zhu, Xuan Lv, Francis R. Lin, Alex K. -Y. Jen, Tingting Shi, Hin-Lap Yip, Man-Keung Fung, Yue-Min Xie
Summary: This study develops a dual-interface engineering approach to improve the performance of all-inorganic wide-bandgap CsPbI2Br-based front sub-cells in perovskite/organic tandem solar cells (POTSCs). By mitigating the defects and carrier recombination induced by interface defects and perovskite grain boundaries, the CsPbI2Br-based front sub-cells achieve a high power conversion efficiency (PCE) of 17.0% and open-circuit voltage (V-OC) of 1.347 V. Furthermore, by integrating these dual-interface engineered front sub-cells with narrow-bandgap PM6:CH1007-based rear sub-cells, a record PCE of 23.21% is obtained for the POTSCs.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bicui Li, Shujie Yang, Huifang Han, Huijing Liu, Hang Zhao, Zhenzhen Li, Jia Xu, Jianxi Yao
Summary: All-inorganic perovskite solar cells are attractive due to their excellent optoelectronic performance and thermal stability. The currently used efficient inorganic perovskite materials can transform into undesirable phases without light-absorption properties. Mixing low-dimensional perovskite has been studied to stabilize all-inorganic perovskite. The study successfully fabricated 2D/3D mixed-dimensional Cs2PbI2Cl2/CsPbI2.5Br0.5 films with increasing phase stability, resulting in improved photoelectric performance.
Review
Chemistry, Physical
Malouangou Maurice Davy, Tsiba Matondo Jadel, Chen Qin, Bai Luyun, Guli Mina
Summary: Low dimensional and mixed dimensional halide perovskites have emerged in the field of perovskite solar cells, with Sn being a promising element to replace toxic lead. Efforts to reduce toxicity and improve environmental stability have been made by incorporating different sizes and functional groups of organic ammonium cations.
SUSTAINABLE ENERGY & FUELS
(2021)
Review
Chemistry, Physical
Shaomin Yang, Yuwei Duan, Zhike Liu, Shengzhong (Frank) Liu
Summary: All-inorganic CsPbX3 perovskites have attracted significant attention in recent years due to their excellent optoelectronic properties and wide range of applications. This review provides a brief introduction to the fundamental properties of CsPbX3 perovskites and summarizes the recent progress in crystallization modulation strategies for high-quality CsPbX3 films. The potential methods for improving the efficiency of inorganic PSCs are also discussed, offering insights into the future development prospects.
ADVANCED ENERGY MATERIALS
(2023)
Article
Polymer Science
Rui Zhao, Yuechen Li, Zicheng Ding, Ziang Wu, Han Young Woo, Kui Zhao, Xiaochen Wang, Shengzhong Frank Liu, Yongfang Li
Summary: Fabrication of high-efficiency organic solar cells using nonhalogen green solvents is desired, but the morphology control of the active layer remains challenging. In this study, a two-step heating strategy is proposed to optimize the morphology of the active layer based on a low-cost polymer donor and a small molecule acceptor. This strategy improves the charge generation, transport, and collection efficiency, resulting in a significantly higher device efficiency compared to nonoptimal conditions.
Article
Chemistry, Physical
Qingqian Wang, Hongmei Zhu, Wei Chen, Junjie Hao, Zhaojin Wang, Jun Tang, Yingguo Yang, Xiao Wei Sun, Dan Wu, Kai Wang
Summary: This study proposes an effective strategy to achieve high CPL activity in quantum dots by introducing 2D chiral perovskite as a chiral source, providing spin polarized carriers through the CISS effect. The as-synthesized QDs/CP composites exhibit dissymmetry factors (g(lum)) up to 9.06 x 10(-3). These findings provide a useful method to achieve CPL in QDs/2D chiral perovskite heterojunctions, which could be promising in spin-optoelectronics application.
Review
Chemistry, Physical
Jinbo Pang, Songang Peng, Chongyang Hou, Xiao Wang, Ting Wang, Yu Cao, Weijia Zhou, Ding Sun, Kai Wang, Mark H. Ruemmeli, Gianaurelio Cuniberti, Hong Liu
Summary: In this review, the applications of MXene in sensors and actuators are discussed. MXene-based films, membranes, and composites are used to simulate the five primary human senses and stimulate muscles. MXene is utilized in image sensors, gas sensors, chemical biosensors, acoustic devices, and tactile sensors for electronic skin, as well as in MXene-based actuators. The future opportunities for MXene research in artificial intelligence and humanoid robots are also presented.
Article
Chemistry, Multidisciplinary
Yi-Han Wang, Yu Qin, Shen Tang, Qing-Hu Teng, Meng-Meng Zhu, Song Peng, Kai Wang, Fu-Pei Liang
Summary: Two novel polynuclear lanthanide clusters with asymmetric metallogrid and double-layered cage topologies have been synthesized. Magnetic measurements reveal slow magnetic relaxation behavior in both compounds.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Robotics
Yuzhe Wang, Pengpeng Zhang, Hui Huang, Jian Zhu
Summary: In this study, a fully transparent soft jellyfish robot is developed with both transparency and bio-inspired omni motions in water. The robot is driven by transparent dielectric elastomer actuators (DEAs) using hybrid silver nanowire networks and conductive polymer as compliant electrodes. This transparent DEA allows the robot to achieve vertical and horizontal movements in water, mimicking the pulsating rhythm of a real jellyfish.
Article
Chemistry, Multidisciplinary
Zhiteng Wang, Qingwen Tian, Hao Zhang, Huidong Xie, Yachao Du, Lei Liu, Xiaolong Feng, Adel Najar, Xiaodong Ren, Shengzhong (Frank) Liu
Summary: Research has found that halide-related surface defects on inorganic halide perovskite can lead to charge recombination and affect the long-term stability of perovskite solar cells. Using density functional theory calculation, it has been verified that iodine interstitials (I-i) have a low formation energy and are easily formed on the surface of all-inorganic perovskite. A specific passivator called 2,6-diaminopyridine (2,6-DAPy) has been screened, which successfully eliminates iodine interstitials, dissociative iodine molecules, and passivates iodine vacancies. This passivation process improves the power-conversion efficiency (PCE) and environmental stability of the perovskite solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Multidisciplinary
Zi-Ao Wang, Xiaomin Zhang, Wenkai Zhu, Faguang Yan, Pengfei Liu, Zhe Yuan, Kaiyou Wang
Summary: We report a transition of negative-to-positive magnetoresistance in Fe3GeTe2/Cr2Ge2Te6/Fe3GeTe2 van der Waals all-magnetic tunnel junctions with increasing the applied bias voltage. A negative magnetoresistance is observed first, where the resistance with antiparallel aligned magnetization of two Fe3GeTe2 electrodes is lower than that with parallel alignment, due to the opposite spin polarizations of two Fe3GeTe2 electrodes. With the bias voltage increasing, the spin polarization of the biased Fe3GeTe2 electrode is changed so that the spin orientations of two Fe3GeTe2 electrodes are the same.
CHINESE PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Manni Chen, Zhipeng Zhang, Bin Wen, Runze Zhan, Kai Wang, Shaozhi Deng, Jiangsheng Xie, Jun Chen
Summary: This study presents the use of Ga2O3 compact layer to form a heterojunction structure with FAPbI3 for perovskite-based X-ray detectors. The FAPbI3/Ga2O3 detector exhibits significantly reduced dark current and increased photo-to-dark current ratio compared to the bare FAPbI3 detector. It also achieves a lower detection limit and shorter response time. Furthermore, the FAPbI3/Ga2O3 device demonstrates better repeatability due to the suppression of ion migration.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xinhe Wu, Haiqin Ma, Kai Wang, Juan Wang, Guohong Wang, Huogen Yu
Summary: An innovative and one-step sodium acetate (CH3COONa)-mediated synthesis strategy has been designed to synthesize a high-yield and crystalline g-C3N4 photocatalyst, aiming to avoid the drawbacks of currently reported molten salt-assisted strategy. The CH3COONa can effectively prevent the sublimation of DCDA and promote the transformation of DCDA into g-C3N4 with a high yield. The resulting g-C3N4 exhibits significantly enhanced H2-evolution rate.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
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
Chemistry, Multidisciplinary
Bicheng Zhao, Jiaqi Yan, Fen Long, Wu Qiu, Guoqing Meng, Zhicheng Zeng, Hui Huang, Han Wang, Naibo Lin, Xiang-Yang Liu
Summary: Ionogels prepared from ionic liquid (IL) by impregnating IL into a safe, environmentally friendly water-based polyurethane (WPU) network mimic the ion transport channels in the phospholipid bilayer of the cell membrane. These ultradurable ionogels have suitable mechanical properties and high conductivities (>28-39 mS cm(-1)). The strain sensor based on these ionogels shows ultrahigh sensitivity (0.99-1.35) and a wide sensing range (0.1%-200%). These findings are promising for various ionotronics requiring environmental stability and high conductivity characteristics.
Article
Chemistry, Multidisciplinary
Yanrui Zhang, Lixia Ren, Peng Zhai, Jingjing Xin, Jiarong Wu, Qi Zhang, Xin Chen, Kui Zhao, Lu Zhang, Shengzhong (Frank) Liu
Summary: This study investigates the fabrication process of perovskite using water instead of toxic organic solvents. The high surface tension of water is overcome by designing a long-alkyl chain anionic surfactant, potassium oleate (PO), which reduces the surface tension and enables the production of high-quality, pinhole-free perovskite films. The use of PO also improves the formation kinetics of perovskite, resulting in a high power conversion efficiency (PCE) of 24.14% for PSCs.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zhuo Xu, Weidong Luo, Songyan Guo, Shengzhong Frank Liu
Summary: This work reveals the crucial role of spacer ligands in metal-2D perovskite junctions, which can significantly affect the contact properties. Ligands with different sizes and functional groups have been found to strongly influence the interface binding energy, Schottky barrier height, and tunneling property. Small-size ligands can effectively enhance the interface coupling and perturb the perovskite electronic properties, resulting in a high tunneling probability.
Article
Chemistry, Multidisciplinary
Dongliang Bai, Dexu Zheng, Shaoan Yang, Fengyang Yu, Xuejie Zhu, Lei Peng, Likun Wang, Jishuang Liu, Dong Yang, Shengzhong (Frank) Liu
Summary: The defects formed by halide ion escape and the wettability of the perovskite absorber are important factors limiting the performance of perovskite solar cells (PSCs). In this study, a series of ionic organic modulators containing halide anions were designed to prevent defect formation and improve the surface tension of the perovskite absorber. It was found that the modulator containing Br anions was the most effective in reducing charge recombination and promoting carrier transfer. Additionally, this modulator improved the hydrophobicity of the perovskite surface. As a result, the efficiency of PSCs using the Br-containing modulator increased to 23.32% from the control device's efficiency of 21.08%. The unencapsulated PSCs with the modulator also showed excellent stability, retaining 75.42% of their initial efficiency after 28 days of storage in air with about 35% humidity, compared to the control device's 44.49% retention. The research demonstrates the importance of halide ions in defect prevention and surface tension improvement of perovskite absorber, and highlights the potential of ionic organic modulators for enhancing PSC performance.
