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- Title
High‐Efficiency Perovskite Quantum Dot Photovoltaic with Homogeneous Structure and Energy Landscape.
- Authors
Huang, Hehe; Zhang, Xuliang; Gui, Ruohua; Zhao, Chenyu; Guo, Junjun; Maung, Yin Maung; Yin, Hang; Ma, Wanli; Yuan, Jianyu
- Abstract
The energy disorder originating from quantum dot (QD) size and relevant solid film inhomogeneity is detrimental to the charge transport and efficiency of QD based solar cells. The emergence of halide perovskite QDs (PQDs) have attracted great attention as promising absorbers in QD photovoltaics. However, it is currently difficult in preparing structural uniform PQD film with homogenous energetic landscape, which is essential for highly reproducible and efficient solar cells. Herein, assisted by a bidentate ligand 2,5‐thiophenedicarboxylic acid, a facile solution phase anchoring (SPA) strategy is first reported for design and preparation of all‐inorganic CsPbI3 PQD film with reduced structure and energy disorder. The SPA can enhance PQD dispersion as well as dot‐to‐dot interaction, which is beneficial for fabricating high‐quality PQD arrays and photovoltaic devices. The engineered CsPbI3 PQD solar cell exhibits enhanced reproducibility, and higher open–circuit voltage together with a champion efficiency of 16.14%, which is among the highest report to date. These results are believed to provide design principle of uniform PQDs for high‐performance optoelectronic application.
- Subjects
QUANTUM dots; SOLAR cells; THIN films; OPEN-circuit voltage; PHOTOVOLTAIC power generation; HIGH voltages; PEROVSKITE
- Publication
Advanced Functional Materials, 2023, Vol 33, Issue 13, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202210728