Review
Chemistry, Multidisciplinary
Junwei Liu, Kaihu Xian, Long Ye, Zhihua Zhou
Summary: Lead chalcogenide colloidal quantum dot solar cells show excellent performance but face challenges in reducing open-circuit voltage loss, with research focusing on exploring strategies to decrease V-oc losses and achieve higher conversion efficiencies.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yongjoon Cho, Byoungkyu Lee, Sungwoo Jung, Seonghun Jeong, Jeewon Park, Geunhyung Park, Sangjin Yang, Changduk Yang
Summary: Understanding the thermodynamic and kinetic mechanisms of film formation is crucial for achieving high power conversion efficiencies in organic solar cells. This study investigates the correlation between non-fullerene acceptor types and processing cosolvent compositions, and finds that the outer side-chain length of the acceptor and the cosolvent composition greatly affect the crystalline behavior and performance of the active layers.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zhongyao Jiang, Tian Du, Chieh-Ting Lin, Thomas J. Macdonald, Jiongye Chen, Yi-Chun Chin, Weidong Xu, Bowen Ding, Ji-Seon Kim, James R. Durrant, Martin Heeney, Martyn A. McLachlan
Summary: This study investigates the correlation between the highest occupied molecular orbital (HOMO) of hole transport layers (HTLs) and the open-circuit voltage (V-oc) in perovskite solar cells, emphasizing the importance of minimizing the energetic offset between HTLs and the perovskite active layer to reduce non-radiative recombination losses.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Engineering, Environmental
Mengde Zhai, Aili Wang, Cheng Chen, Feng Hao, Haoxin Wang, Liming Ding, Xichuan Yang, Ming Cheng
Summary: Efforts to improve the performance of all-inorganic perovskite solar cells through the development of high-quality perovskite films and efficient charge transport materials have led to the design and synthesis of low-cost hole transport materials that have shown promising results in boosting the efficiency of CsPbI2Br PSC.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Jian Yang, Liang Chu, Ruiyuan Hu, Wei Liu, Nanjing Liu, Yuhui Ma, Waqar Ahmad, Xing'ao Li
Summary: This study utilized two-dimensional g-C3N4 nanosheets to modify the TiO2 layers in planar PSCs, effectively improving the efficiency of the solar cells by enhancing Voc and reducing hysteresis phenomenon.
Article
Chemistry, Multidisciplinary
Chen Chen, Xiao Wang, Zhipeng Li, Xiaofan Du, Zhipeng Shao, Xiuhong Sun, Dachang Liu, Caiyun Gao, Lianzheng Hao, Qiangqiang Zhao, Bingqian Zhang, Guanglei Cui, Shuping Pang
Summary: Introducing polyacrylonitrile (PAN) for passivating uncoordinated lead cations in perovskite films has been successful in improving device efficiency and open-circuit voltage, increasing ion migration activation energy, and enhancing operational stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Energy & Fuels
Kai Yang, Shuang Liu, Jiankang Du, Weihua Zhang, Qingyi Huang, Wenhao Zhang, Wenjing Hu, Yue Hu, Yaoguang Rong, Anyi Mei, Hongwei Han
Summary: This study successfully reduced the V-OC loss in printable MPSCs by using OTAC additive, optimizing energy-level alignment and suppressing nonradiative recombination, resulting in a high PCE.
Article
Chemistry, Physical
Yunxiao Du, Xiang Zhang, Yunfan Shi, Xiaoyi Hou, Fangjie Li, Qilin Zhang, Qidong Tai, Pei Liu, Xing-Zhong Zhao
Summary: In this study, Y3+ ions were successfully incorporated into carbon-based MAPbBr(3) PSCs to enhance the photovoltaic performance of perovskite films. The introduction of Y3+ ions improved the crystallinity of the film, reduced trap density, and extended carrier lifetime, achieving a maximal power conversion efficiency. Additionally, the unencapsulated device exhibited remarkable long-term stability under different storage conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Margherita Biondi, Min-Jae Choi, Seungjin Lee, Koen Bertens, Mingyang Wei, Ahmad R. Kirmani, Geonhui Lee, Hao Ting Kung, Lee J. Richter, Sjoerd Hoogland, Zheng-Hong Lu, F. Pelayo Garcia de Arquer, Edward H. Sargent
Summary: This study reports a strategy to reduce trap states in quantum dot solar cells by changing the solvent type, leading to higher power conversion efficiency.
ACS ENERGY LETTERS
(2021)
Article
Physics, Applied
Andreas Pusch, Stephen P. Bremner, Murad J. Y. Tayebjee, Nicholas J. Ekins Daukes
Summary: Efficiency limits of multiple exciton generation (MEG) solar cells need to consider Auger recombination, challenging the assumption of effective separation of timescales in traditional quasi-equilibrium models. A non-equilibrium model can offer more accurate assessment of MEG solar cell performance by taking into account Auger recombination impact.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yinyi Ma, Chengsong Zeng, Peng Zeng, Yuchao Hu, Faming Li, Zhonghao Zheng, Minchao Qin, Xinhui Lu, Mingzhen Liu
Summary: Modification of the perovskite surface with organic ammonium halide salts is a strategy to improve the open-circuit voltage of perovskite solar cells. The use of polar molecular PMA(+) at the interface between perovskite and hole transporting layer significantly increases the open-circuit voltage, leading to improved performance of the solar cell.
Article
Energy & Fuels
Hang Hu, Jiyao Zhang, Yulan Huang, Deng Wang, Dongyang Li, Jiabang Chen, Jiawen Wu, Luozheng Zhang, Xianyong Zhou, Bihua Hu, Xingzhu Wang, Jianyong Ouyang, Baomin Xu
Summary: Researchers have used a small organic molecule to passivate the surface of perovskite solar cells, improving their efficiency and stability. By adjusting the energy-level alignment, charge carrier extraction has also been enhanced.
Article
Chemistry, Physical
Tian Du, Shudi Qiu, Xin Zhou, Vincent M. Le Corre, Mingjian Wu, Lirong Dong, Zijian Peng, Yicheng Zhao, Dongju Jang, Erdmann Spiecker, Christoph J. Brabec, Hans-Joachim Egelhaaf
Summary: Printable planar carbon electrodes are found to be a promising alternative to thermally evaporated metals as the rear contact for perovskite solar cells (PSCs). However, the power conversion efficiencies (PCEs) of carbon-electrode PSCs lag behind metal-electrode PSCs. In this study, a hole-transporting bilayer (HTbL) configuration is proposed to simultaneously improve the fill factor and open-circuit voltage of carbon-electrode PSCs, leading to a significantly higher PCE of 19.2% compared to 17.3%. This research demonstrates the potential of fully printed carbon-electrode PSCs with HTbLs as a highly cost-effective photovoltaic technology.
Article
Chemistry, Multidisciplinary
Rong Tang, Shuo Chen, Zhuang-Hao Zheng, Zheng-Hua Su, Jing-Ting Luo, Ping Fan, Xiang-Hua Zhang, Jiang Tang, Guang-Xing Liang
Summary: This study reports an effective interface engineering approach using rapid thermal annealing to suppress nonradiative recombination near the Sb2Se3/CdS heterojunction, improving the performance of thin-film solar cells.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chenzhe Xu, Suicai Zhang, Wenqiang Fan, Feiyu Cheng, Haochun Sun, Zhuo Kang, Yue Zhang
Summary: By modifying the interface molecules for CsPbI3 perovskite, the electron transfer barrier is reduced and the crystal quality is improved, resulting in a decrease of trap-assisted charge recombination and interfacial energetic loss. As a result, the devices achieve an impressive efficiency of 20.98% and a record-low V-OC deficit of 0.451 V.
ADVANCED MATERIALS
(2023)
