High‐Performance CuInS<sub>2</sub> Quantum Dot Sensitized Solar Cells Through I<sup>−</sup>/MPA Dual‐Ligands Passivation
High-efficiency quantum dot sensitized solar cells (QDSSCs) can be received by increasing quantum dot (QD) loading and mitigating QD surface trap states. Herein, the surface state of CuInS<sub>2</sub> QDs is optimized through an I<sup>-</sup>/MPA dual-ligands passivation strategy. The steric hindrance and electrostatic repulsion between QDs can be effectively reduced, thereby enabling an increased QD loading capacity. Meanwhile, the I<sup>-</sup>/MPA dual-ligands passivation strategy can further lower the surface trap density, leading to substantially enhanced charge transfer efficiency of the solar cells. Interestingly, various iodized salts, including TBAI, MAI, and KI, are proved to possess comparable property, underscoring the versatility and broad applicability of this I<sup>-</sup>/MPA dual-ligands passivation strategy. Eventually, CuInS<sub>2</sub> QDSSCs based on the NH<sub>4</sub>I/MPA dual-ligands exhibit a noteworthy enhancement in photovoltaic conversion efficiency, surpassing the benchmark of 5.71 % to reach 7.03 %.
Authors
- Keqiang Chen (ORCID: https://orcid.org/0000-0002-5741-1236)
- Zhuoyin Peng (ORCID: https://orcid.org/0000-0002-0098-2310)
- Xinlong Zhang (ORCID: https://orcid.org/0009-0004-8040-0553)
- Xing Li (ORCID: https://orcid.org/0000-0002-0794-3613)
- Wei Li (ORCID: https://orcid.org/0000-0003-1364-8968)
- Kai Liao (ORCID: https://orcid.org/0000-0002-6923-4943)
- Yuanfang Zhang (ORCID: https://orcid.org/0000-0002-0293-7513)
- Yongjie Gu
- Beiying Lu
Institutions
- China University of Geosciences (CN)
- Shenzhen Research Institute of China University of Geosciences (CN)
- Education Department of Hunan Province (CN)
- Changsha University of Science and Technology (CN)
Publication Details
- Journal
- Chemistry - An Asian Journal
- Published
- 2024-08-29
- DOI
- https://doi.org/10.1002/asia.202400836
- Citations
- 2
- Primary Topic
- Quantum Dots Synthesis And Properties
- Type
- article
- Field-Weighted Citation Impact
- 0.23
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Hubei Province
- Natural Science Foundation of Hunan Province
- Basic and Applied Basic Research Foundation of Guangdong Province