Novel Carbazole-Based Hole-Transporting Materials with Star-Shaped Chemical Structures for Perovskite-Sensitized Solar Cells
- Authors
- Kang, Min Soo; Sung, Sang Do; Choi, In Taek; Kim, Hyoungjin; Hong, MunPyo; Kim, Jeongho; Lee, Wan In; Kim, Hwan Kyu
- Issue Date
- 14-10월-2015
- Publisher
- AMER CHEMICAL SOC
- Keywords
- perovskite-sensitized solar cells; hole-transporting materials; carbazole; star-shaped chemical structures; charge-transfer efficiency
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.7, no.40, pp.22213 - 22217
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 7
- Number
- 40
- Start Page
- 22213
- End Page
- 22217
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/92191
- DOI
- 10.1021/acsami.5b04662
- ISSN
- 1944-8244
- Abstract
- Novel carbazole-based hole-transporting materials (HTMs), including extended pi-conjugated central core units such as 1,4-phenyl, 4,4'-biphenyl, or 1,3,5-trisphenylbenzene for promoting effective pi-pi stacking as well as the hexyloxy flexible group for enhancing solubility in organic solvent, have been synthesized as HTM of perovskite-sensitized solar cells. A HTM with 1,3,5-trisphenylbenzene core, coded as SGT-411, exhibited the highest charge conductivity caused by its intrinsic property to form crystallized structure. The perovskite-sensitized solar cells with SGT-411 exhibited the highest PCE of 13.00%, which is 94% of that of the device derived from spiro-OMeTAD (13.76%). Time-resolved photoluminescence spectra indicate that SGT-411 shows the shortest decay time constant, which is in agreement with the trends of conductivity data, indicating it having fastest charge regeneration. In this regard, a carbazole-based HTM with star-shaped chemical structure is considered to be a promising candidate HTM.
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Collections - Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
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