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Jang, Sung-Yeon
Renewable Energy and Nanoelectronics Lab.
Research Interests
  • - 유기 태양전지
  • - 콜로이드 양자점 태양전지
  • - 페로브스카이트 태양전지
  • - 열전
  • - 분자 전자

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Solid-state-ligand-exchange free quantum dot ink-based solar cells with an efficiency of 10.9%

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Title
Solid-state-ligand-exchange free quantum dot ink-based solar cells with an efficiency of 10.9%
Author
Aqoma, HavidJang, Sung-Yeon
Issue Date
2018-06
Publisher
ROYAL SOC CHEMISTRY
Citation
ENERGY & ENVIRONMENTAL SCIENCE, v.11, no.6, pp.1603 - 1609
Abstract
While colloidal quantum dot based solar cells (CQDSCs) have recently achieved power conversion efficiencies (PCE) up to 11.3%, the CQD active layers are fabricated almost exclusively by a combined process of in situ solid-state ligand exchange (SSE) with multiple layer-by-layer (LbL) deposition, which has been a major obstacle to high-throughput processing. In this work, we developed, for the first time, high-efficiency CQDSCs without using either the SSE or LbL technique. The fabrication of n-p quantum dot junctions by SSE-free direct coating was achieved using n-type CQD ink and p-type CQD ink. The ink based devices achieved a PCE of approximate to 11%, which is comparable to the current state-of-the-art performance. The CQD inks enabled, for the first time, use of the doctor-blade coating method for device fabrication. Notably, the PCE of the bladed CQDSCs was remarkably high, at >10%, which suggests its potential use in other industrially friendly processes.
URI
https://scholarworks.unist.ac.kr/handle/201301/26763
URL
https://pubs.rsc.org/en/content/articlelanding/2018/EE/C8EE00278A#!divAbstract
DOI
10.1039/c8ee00278a
ISSN
1754-5692
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