Efficient Hole-Transporting Materials with Triazole Core for High-Efficiency Perovskite Solar Cells
- Authors
- Choi, Hyeju; Jo, Hyeonjun; Paek, Sanghyun; Koh, Kyungkuk; Ko, Haye Min; Lee, Jae Kwan; Ko, Jaejung
- Issue Date
- 18-2월-2016
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- donor-acceptor systems; efficiency; hole transporting materials; perovskite solar cells; triazole
- Citation
- CHEMISTRY-AN ASIAN JOURNAL, v.11, no.4, pp.548 - 554
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMISTRY-AN ASIAN JOURNAL
- Volume
- 11
- Number
- 4
- Start Page
- 548
- End Page
- 554
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/89497
- DOI
- 10.1002/asia.201501178
- ISSN
- 1861-4728
- Abstract
- Efficient hole-transporting materials (HTMs), TAZ-[MeOTPA](2) and TAZ-[MeOTPATh](2) incorporating two electron-rich diphenylamino side arms, through direct linkage or thiophen bridges, respectively, on the C3- and C5-positions of a 4-phenyl-1,2,4-triazole core were synthesized. These synthetic HTMs with donor-acceptor type molecular structures exhibited effective intramolecular charge transfer for improving the hole-transporting properties. The structural modification of HTMs by thiophene bridging might increase intermolecular - stacking in the solid state and afford a better spectral response because of their increased -conjugation length. Perovskite-based cells using TAZ-[MeOTPA](2) and TAZ-[MeOTPATh](2) as HTMs afforded high power conversion efficiencies of 10.9% and 14.4%, respectively, showing a photovoltaic performance comparable to that obtained using spiro-OMeTAD. These synthetically simple and inexpensive HTMs hold promise for replacing the more expensive spiro-OMeTAD in high-efficiency perovskite solar cells.
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Collections - College of Science and Technology > Department of Advanced Materials Chemistry > 1. Journal Articles
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