Effect of multi-armed triphenylamine-based hole transporting materials for high performance perovskite solar cells
- Authors
- Park, Sungmin; Heo, Jin Hyuck; Yun, Jae Hoon; Jung, Tae Sub; Kwak, Kyungwon; Ko, Min Jae; Cheon, Cheol Hong; Kim, Jin Young; Im, Sang Hyuk; Son, Hae Jung
- Issue Date
- 2016
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- CHEMICAL SCIENCE, v.7, no.8, pp.5517 - 5522
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMICAL SCIENCE
- Volume
- 7
- Number
- 8
- Start Page
- 5517
- End Page
- 5522
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/90125
- DOI
- 10.1039/c6sc00876c
- ISSN
- 2041-6520
- Abstract
- A series of hole-transporting materials (HTMs) based on [2,2]paracyclophane and triphenyl-amine (TPA) was synthesized. We studied the effect of the chemical structure of the HTM on the photovoltaic performance of perovskite solar cells by varying the number of TPA charge transporting components in the HTM. Tetra-TPA, in which four TPAs are incorporated into the [2,2]paracyclophane core, exhibited better hole transport properties than di-TPA and tri-TPA, which contain two and three TPAs, respectively. In particular, incorporation of the TPA group with a multi-armed structure effectively enhanced the conductivity of the HTM layer in the out-of-plane direction in the solar cell device. Due to the improved charge transport and appropriate molecular energy levels of tetra-TPA, the perovskite solar cell based on the tetra-TPA HTM achieved higher J(sc) and FF values than the devices based on di-TPA and tri-TPA HTMs, with a high solar cell efficiency (17.9%).
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- Appears in
Collections - College of Science > Department of Chemistry > 1. Journal Articles
- Graduate School > KU-KIST Graduate School of Converging Science and Technology > 1. Journal Articles
- College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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