Simultaneous Ligand Exchange Fabrication of Flexible Perovskite Solar Cells using Newly Synthesized Uniform Tin Oxide Quantum Dots
- Authors
- Park, So Yeon; Baek, Mi Yeon; Ju, Yeonkyeon; Kim, Dong Hoe; Moon, Chan Su; Noh, Jun Hong; Jung, Hyun Suk
- Issue Date
- 20-9월-2018
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY LETTERS, v.9, no.18, pp.5460 - 5467
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY LETTERS
- Volume
- 9
- Number
- 18
- Start Page
- 5460
- End Page
- 5467
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/73077
- DOI
- 10.1021/acs.jpclett.8b02408
- ISSN
- 1948-7185
- Abstract
- Halide perovskite solar cells (HPSCs) have a significant potential for future photovoltaic systems because of a high power conversion efficiency (PCE) exceeding 23% using solution processing methods. A low-temperature processed oxide layer is a challenging issue for large-scale manufacture of flexible and low-cost HPSCs. Here, we propose a simple reverse micelle-water injection method for highly dispersed ligand-capped ultrafine SnO2 quantum dots (QD). Interestingly, we observed that the ligands, which help in the formation of a uniform SnO2 QD thin film, spontaneously exchange for halide through a perovskite solution, and finally we form a suitable SnO2 QD-halide junction for high-performance HPSCs. The flexible HPSC with the SnO2 QD-halide junction formed via the ligand exchange exhibits a high PCE of 17.7% using a flexible substrate. It also shows an excellent flexibility, where the initial PCE is maintained within 92% after 1000 bending cycles with a bending radius of 18 mm.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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