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Jang, Sung-Yeon
Renewable Energy and Nanoelectronics Lab.
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  • - 유기 태양전지
  • - 콜로이드 양자점 태양전지
  • - 페로브스카이트 태양전지
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Molecular Engineering in Hole Transport pi-Conjugated Polymers to Enable High Efficiency Colloidal Quantum Dot Solar Cells

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Title
Molecular Engineering in Hole Transport pi-Conjugated Polymers to Enable High Efficiency Colloidal Quantum Dot Solar Cells
Author
Al Mubarok, MuhibullahAqoma, HavidWibowo, Febrian Tri AdhiLee, WooseopKim, Hyung MinRyu, Du YeolJeon, Ju-WonJang, Sung-Yeon
Issue Date
2020-02
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED ENERGY MATERIALS, v.10, no.8
Abstract
Organic p-type materials are potential candidates as solution processable hole transport materials (HTMs) for colloidal quantum dot solar cells (CQDSCs) because of their good hole accepting/electron blocking characteristics and synthetic versatility. However, organic HTMs have still demonstrated inferior performance compared to conventional p-type CQD HTMs. In this work, organic pi-conjugated polymer (pi-CP) based HTMs, which can achieve performance superior to that of state-of-the-art HTM, p-type CQDs, are developed. The molecular engineering of the pi-CPs alters their optoelectronic properties, and the charge generation and collection in CQDSCs using them are substantially improved. A device using PBDTTPD-HT achieves power conversion efficiency (PCE) of 11.53% with decent air-storage stability. This is the highest reported PCE among CQDSCs using organic HTMs, and even higher than the reported best solid-state ligand exchange-free CQDSC using pCQD-HTM. From the viewpoint of device processing, device fabrication does not require any solid-state ligand exchange step or layer-by-layer deposition process, which is favorable for exploiting commercial processing techniques.
URI
https://scholarworks.unist.ac.kr/handle/201301/30948
URL
https://onlinelibrary.wiley.com/doi/full/10.1002/aenm.201902933
DOI
10.1002/aenm.201902933
ISSN
1614-6832
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