Article
Engineering, Environmental
Jiawei Zhang, Tie Liu, Zhiqiang Bao, He Liu, Ying Lv, Xiaoyang Guo, Xingyuan Liu, Yulei Chang, Bin Li
Summary: Interface passivation with metal-free H2-phthalocyanine (H2Pc) improves the efficiency and stability of perovskite solar cells (PSCs) by repairing defects and modifying energy levels. H2Pc molecules interact more effectively with unsaturated Pb and I sites compared to metal phthalocyanines. The defects passivation and improved crystallinity are achieved through coordination bonding and hydrogen bonding. H2Pc treatment also improves energy level alignment and charge extraction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Y. Zou, C. Lin, G. Luo, H. Li, H. Hu, P. Lin, P. Wang, L. Xu, X. Wu, C. Cui
Summary: The structure instability of perovskite solar cells (PSCs) can be limited by stabilizing the perovskite structure through partial replacement of A-site ions with larger and non-polar ions.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Jiadong Zang, Caiyun Zhang, Yue Qiang, Qi Liu, Yuemeng Fei, Ze Yu
Summary: In this study, the use of 2-mercaptopyrimidine (MPM) successfully improved the efficiency of metal halide perovskite solar cells (PSCs) and enhanced their stability in high humidity environments.
SURFACES AND INTERFACES
(2021)
Article
Energy & Fuels
Fuqiang Li, Xiaofeng Huang, Junpeng Xue, Fengwu Liu, Danbi Kim, Hyun-Seock Yang, Eunhye Yang, Insoo Shin, Junghwan Kim, Bo Ram Lee, Sung Heum Park
Summary: The addition of 2-hexyl-thiophene (2HT) has proven to be an effective strategy for producing high-quality perovskite films, leading to improved efficiency and stability of perovskite solar cells.
Article
Chemistry, Physical
Zhengjie Zhu, Kaitian Mao, Kai Zhang, Wei Peng, Jieqi Zhang, Hongguang Meng, Shuang Cheng, Tieqiang Li, Hongzhen Lin, Qi Chen, Xiaojun Wu, Jixian Xu
Summary: By studying the different configurations and protonation states of amine groups in the PEI family, we discovered an in-situ protonation process that significantly reduces deep-level traps of minority carriers in p-i-n perovskite solar cells. This method can improve the power conversion efficiency of solar cells, and the cells showed no degradation in long-term testing.
Article
Energy & Fuels
Hsin-Tsung Hsu, Yu-Min Kung, Shanmuganathan Venkatesan, Hsisheng Teng, Yuh-Lang Lee
Summary: To reduce the density of defects in perovskite solar cells, dodecylamine (DAM), dodecylic acid (DAC), and 12-aminolauric acid (ALA) were used as additives to prepare perovskite films. The results showed that DAM and DAC could increase the device's power conversion efficiency (PCE), while ALA exhibited more significant passivation effects due to the synergistic effects of its -NH2 and -COOH groups. Additionally, the treatments with passivation agents also improved the hydrophobicity of the perovskite films, enhancing the stability of the solar cells.
Article
Nanoscience & Nanotechnology
Nianci Guan, Guo Wu, Jian Wang, Yaqi Bao, Wei Hui, Zhaoqi Deng, Lei Gu, Xingyu Gao, Jing Zhang, Peter Muller-Buschbaum, Lin Song
Summary: Polymerized ionic liquid additives improve the efficiency and stability of perovskite solar cells. By incorporating the polymeric ILs into perovskite films and solar cells, the problems of aggregation and evaporation can be overcome, and the crystallization behavior of perovskite films and charge-carrier transport can be improved, resulting in highly efficient and stable solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Chen Wang, Zihan Zhu, Ge Wang, Xiangxu Ding, Yi Chen, Songwen Xiao, Xin Liu, Xiaoyu Zhang, Shanpeng Wen
Summary: The crystallization quality and defect chemistry of MAPbI3 perovskite solar cells were engineered using dual additives, resulting in a high-quality MAPI film. The choice and usage of the additives played a crucial role in the structure and performance of the film.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Engineering, Environmental
Lisha Xie, Xiaoyu Deng, Chengbo Li, Yuying Cui, Zhiyuan Cao, Aili Wang, Shurong Wang, Yuanming Chen, Zhi Wang, Yaqing Liu, Qinye Bao, Liming Ding, Feng Hao
Summary: This research utilized 5-(ethylthio)-1H-tetrazole (ETT) to improve the quality of perovskite films, resulting in increased power conversion efficiency and enhanced moisture stability in metal hybrid perovskite solar cells (PSCs).
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Yunjuan Niu, Yaole Peng, Xianxi Zhang, Yingke Ren, Rahim Ghadari, Jun Zhu, Gavin Tulloch, Hong Zhang, Polycarpos Falaras, Linhua Hu
Summary: The energy level alignment at interfaces is crucial for the efficiency and stability of perovskite solar cells. In this study, an innovative interface engineering approach using an ortho-squaraine derivative was proposed to change the charge state of the perovskite surface and tune the energy level structure. The results showed that this approach greatly improved the efficiency and stability of the perovskite solar cells.
ACS ENERGY LETTERS
(2022)
Article
Multidisciplinary Sciences
Cheng Liu, Yi Yang, Kasparas Rakstys, Arup Mahata, Marius Franckevicius, Edoardo Mosconi, Raminta Skackauskaite, Bin Ding, Keith G. Brooks, Onovbaramwen Jennifer Usiobo, Jean-Nicolas Audinot, Hiroyuki Kanda, Simonas Driukas, Gabriele Kavaliauskaite, Vidmantas Gulbinas, Marc Dessimoz, Vytautas Getautis, Filippo De Angelis, Yong Ding, Songyuan Dai, Paul J. Dyson, Mohammad Khaja Nazeeruddin
Summary: The study focuses on understanding the energy barrier of 2D perovskite formation and proposes a method to prevent the formation of in-plane favored 2D perovskite layers, leading to improved device performance.
NATURE COMMUNICATIONS
(2021)
Article
Energy & Fuels
Jingya Fan, Yajie Yang, Ting Jiang, Jingquan Zhang, Lili Wu, Wenwu Wang, Guanggen Zeng, Jianqin Li, Mohammad Abdul Halim, Xia Hao
Summary: This study introduces propylammonium chloride (PACL) for interface treatment of perovskite solar cells, leading to improved performance in terms of power conversion efficiency and mechanical stability.
Article
Chemistry, Physical
Yang Wang, Hua Yang, Kun Zhang, Mingquan Tao, Mingzhu Li, Yanlin Song
Summary: This study proposes a molecular modification strategy to assist defect passivation, enhancing the stability of perovskite solar modules and preventing UV degradation.
ACS ENERGY LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Yutian Lei, Youkui Xu, Meng Wang, Ge Zhu, Zhiwen Jin
Summary: Defects are considered to be one of the most significant factors affecting the power conversion efficiency and long-term stability of perovskite solar cells. Various methods to reduce defect density and improve device performance and long-term stability are introduced, including additive engineering, surface passivation, and other physical treatments. Further understanding of defects and the development trends of passivation strategies are also discussed.
Article
Nanoscience & Nanotechnology
Jinghua Xu, Hongwei Qiao, Zhongliang Chen, Xue-Lu Wang, Ye-Feng Yao
Summary: A simple one-step method was used to prepare n-i-p-structured perovskite solar cells with a 3D/2D perovskite heterojunction as the absorption layer. By post-treating the surface of MAPbI(3) films with an organic ligand, the density of surface trap states was reduced, nonradiative recombination was suppressed, and the interface bands were aligned, resulting in a high power conversion efficiency of 21.93%.
Article
Chemistry, Multidisciplinary
Zhaozhong Fan, Ruichun Luo, Yanxue Zhang, Bo Zhang, Panlong Zhai, Yanting Zhang, Chen Wang, Junfeng Gao, Wu Zhou, Licheng Sun, Jungang Hou
Summary: Researchers have developed an indium-nickel dual-atom catalyst that exhibits high CO selectivity and achieves a high industrial CO partial current density. The synergistic effect of the dual-sites and oxygen bridge in the catalyst reduces the reaction barrier for *COOH formation and suppresses the undesired hydrogen evolution reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xiaowen Zhou, Xingdong Ding, Haoxin Wang, Yawei Miao, Cheng Chen, Mengde Zhai, Ming Cheng
Summary: In this study, two novel hole-transport materials (HTMs) named THP-1 and THP-2 were successfully synthesized. THP-1 exhibited better optoelectronic properties compared to THP-2 due to its suitable energy level and molecular structure. After optimization, PSCs based on THP-1 achieved a high power conversion efficiency of 20.47%, higher than that of THP-2 (17.16%), and comparable to the control device based on spiro-OMeTAD (20.28%). Moreover, THP-1 showed excellent stability with 71.5% of its initial efficiency maintained after 840 hours of aging tests.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Teng Shao, Yuan Chang, Zhuwei Li, Yurou Song, Dingfeng Jin, Junfeng Gao, Licheng Sun, Jungang Hou
Summary: Artificial photosynthesis is a promising solution for the efficient production of hydrogen peroxide. A chemically bonded and plasmonic Z-scheme junction of WO and CNs was developed for high-performance artificial photosynthesis. This Z-scheme catalyst exhibits a high H2O2 generation rate, even under broad-spectrum response irradiation.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Applied
Licheng Liu, Yawei Miao, Mengde Zhai, Tai Wu, Xingdong Ding, Haoxin Wang, Cheng Chen, Yong Hua, Li Guo, Ming Cheng
Summary: In this paper, a new electron donor ACR-Cz-DM is reported, which significantly improves the performance of perovskite solar cells. ACR-Cz-DM is constructed based on ACR and Cz-DM, exhibiting excellent hole mobility and conductivity, as well as good film formation and outstanding charge extraction and transport ability. The photoelectric conversion efficiency (PCE) of FAPbI3-based PSCs using ACR-Cz-DM as the electron donor reaches 21.37%, surpassing that of Spiro-OMeTAD-based PSCs (20.10%) under the same conditions.
Article
Chemistry, Multidisciplinary
Jian Du, Dexin Chen, Yunxuan Ding, Linqin Wang, Fei Li, Licheng Sun
Summary: Exploring highly active and durable electrocatalysts for oxygen evolution reaction (OER) is significant to achieve efficient anion exchange membrane (AEM) water electrolysis. In this study, hollow Co-based N-doped porous carbon spheres decorated with ultrafine Ru nanoclusters (HS-RuCo/NC) were developed as efficient OER electrocatalysts. The unique hollow structure with hierarchically porous characteristics contributed to fast mass transport and increased metal site exposure, while the in situ formed RuO2 and Co3O4 exhibited a synergistic effect on enhancing OER performance. The integration of HS-RuCo/NC into an AEM water electrolyzer resulted in improved cell voltage and long-term stability compared to commercial RuO2-based AEM water electrolyzer.
Article
Chemistry, Physical
Xiansheng Li, Mahdi Haghshenas, Linqin Wang, Jing Huang, Esmaeil Sheibani, Shichen Yuan, Xin Luo, Xuehan Chen, Changting Wei, Hengyang Xiang, Glib Baryshnikov, Licheng Sun, Haibo Zeng, Bo Xu
Summary: In this study, we designed a multifunctional small-molecule hole-transporting material (HTM) called X10 for use in perovskite quantum dot light-emitting diodes (Pe-QLEDs). X10 exhibited high hole mobility, good film-forming ability, strong solvent resistance, and defect passivation effect. Pe-QLEDs using X10 as the HTM achieved a promising external quantum efficiency (EQE) of 20.18%, which was 7-fold higher than that of reference HTM-TCTA-based ones (EQE approximately 2.88%). This is the first case where a small-molecule HTM has shown a high EQE over 20% in Pe-QLEDs. Our work provides important guidance for the rational design of multifunctional small-molecule HTMs for high-performance Pe-QLEDs.
ACS ENERGY LETTERS
(2023)
Article
Business, Finance
Zhaobo Zhu, Licheng Sun, Min Chen
Summary: When stocks are trading near their 52-week high, investors have low expectations for future returns. However, for firms with strong fundamentals, investors' expectations are too low, indicating the psychological anchor of the 52-week high. A trading strategy based on fundamental strength and the 52-week high outperforms the unconditional strategy by significantly increasing the average return. Interestingly, this effect is most evident when investor sentiment is high, but not observed among sophisticated institutions and short sellers.
REVIEW OF QUANTITATIVE FINANCE AND ACCOUNTING
(2023)
Article
Chemistry, Physical
Yawei Miao, Mengde Zhai, Zhenxiao Zhao, Xingdong Ding, Ziyang Xia, Haoxin Wang, Linqin Wang, Cheng Chen, Ming Cheng
Summary: In this study, two asymmetric small molecules, BTD-DA and BTD-PA, were designed and synthesized to modify the perovskite/Spiro-OMeTAD interface in order to improve the photovoltaic performance of perovskite solar cells (PSCs). The molecule BTD-PA showed better defect passivation and energy level regulation due to its strong interaction with the uncoordinated Pb2+ on the perovskite surface. PSCs treated with BTD-PA achieved a champion power conversion efficiency of 24.46% and 22.46% for different active areas, and showed improved long-term stability.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Zi-Yang Xia, Wei Zhang, Cheng Chen, Hao-Xin Wang, Lin-Qin Wang, Ya-Wei Miao, Xing-Dong Ding, Li-Cheng Sun, Ming Cheng
Summary: In order to overcome the energy loss caused by the valence band offset between Cs2AgBiBr6 and the hole transport layer (HTL), a novel deep-level hole transport material (HTM) was designed and synthesized to optimize the energy level alignment. While the introduction of deep-level HTMs successfully reduced the valence band offset between Cs2AgBiBr6 and HTL, it also increased the valence band offset at the HTL/Au interface, limiting the improvement of the power conversion efficiency (PCE). To further improve the PCE, a gradient energy level arrangement combining the newly developed deep-level HTM with Spiro-OMeTAD was constructed. Through optimization, an impressive PCE of 3.50% with high open-circuit voltage and fill factor was achieved, making it one of the best Cs2AgBiBr6 perovskite solar cells.
Article
Multidisciplinary Sciences
Yilong Zhao, Yunxuan Ding, Wenlong Li, Chang Liu, Yingzheng Li, Ziqi Zhao, Yu Shan, Fei Li, Licheng Sun, Fusheng Li
Summary: Electrocatalytic urea synthesis is a promising alternative to traditional energy-intensive urea synthesis. By stabilizing intermediates of *NO2 and *CO, a CuWO4 catalyst achieves efficient co-reduction of CO2 and NO3- to urea via C-N coupling.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Xingdong Ding, Xiaowen Zhou, Haoxin Wang, Mengde Zhai, Ziyang Xia, Licheng Liu, Yi Tian, Cheng Chen, Ming Cheng
Summary: Novel hole transport materials DTP-1 and DTP-2 were successfully synthesized, resulting in improved efficiency of perovskite solar cells. After optimization, DTP-1 showed a power conversion efficiency of 21.1% and demonstrated high stability under high humidity and room temperature conditions.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yicheng Wang, Chuansu Yang, Jinwei Meng, Cheng Chen, Hao Zhuang, Haoxin Wang, Ming Zhang, Hui Xu, Ming Cheng
Summary: Precise molecular configuration design of hole transport materials (HTMs) is essential for achieving highly efficient perovskite solar cells (PSCs). In this study, three small molecular HTMs named TPA-DF, CZ-DF, and CZ-DM are designed and synthesized by combining the core units of triphenylamine and carbazole with different peripheral groups. The effects of core building block configuration and terminal group donating ability on optical, electrochemical, and photovoltaic properties are systematically examined. The CZ-DF based PSCs device achieves a power conversion efficiency (PCE) of 21.5% and retains 79.5% of its initial PCE after aging at 65 °C and 45-60% relative humidity (RH) in an air environment.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yukun Qin, Jing Tan, Shuai Meng, Yuchen Li, Mengde Zhai, Xiaoxian Song, Cheng Chen, Xudong Ren, Qijun Li, Ming Cheng, Jianning Ding
Summary: Moisture-enabled electricity generation (MEG) is a sustainable technique for generating electric power. Carbon dots (CDs) are low-cost and can be surface-functionalized, making them promising materials for MEG devices. In this study, CDs were functionalized with 1,5-naphthalenedisulfonic acid (1,5-NDSA), resulting in a CD-based MEG device with a record-high voltage output of 380 mV. The functionalized CDs facilitated proton gradient formation and improved ionic conductivity, leading to enhanced electricity output. The assembled device can power an electronic calculator and the output can be further boosted in moist air, making it suitable for windy and high humidity areas.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Yue Zhao, Lei Ran, Rui Chen, Yurou Song, Junfeng Gao, Licheng Sun, Jungang Hou
Summary: This study presents an integrated photoanode by grafting covalent triazine frameworks as conjugated molecules on the surface of ferroelectric BaTiO3-x nanorod array, and constructing oxyhydroxide oxygen evolution cocatalyst (OEC). The integrated OEC/CTF/BTO array achieves high photocurrent density and low onset potential, while also exhibiting outstanding stability. The enhanced PEC activity is attributed to the integration of CTF and OEC, which enhances light-harvesting capability, boosts charge carrier mediation, and promotes water oxidation kinetics.
Article
Chemistry, Multidisciplinary
Haoyu Li, Zhangyan Wang, Yuanqing Sun, Yangyang Su, Zhenxiao Zhao, Yi Tian, Hongping Li, Ming Cheng
Summary: Hole transport materials (HTMs) play a crucial role in improving the performance of perovskite solar cells (PSCs). In this study, four biased structured HTMs based on 2,6-substituted azulene were synthesized and evaluated. The HTMs with more bias structure exhibited better electronic properties, and peripheral substitution on the 6-position of azulene had a significant impact on solubility and film formation. The highest power conversion efficiency (PCE) of 16.16% was achieved by Azu-2T6F when applied in PSCs.
NEW JOURNAL OF CHEMISTRY
(2023)
