BROWSE

Related Researcher

Author's Photo

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

ITEM VIEW & DOWNLOAD

High Efficiency Low-Temperature Processed Perovskite Solar Cells Integrated with Alkali Metal Doped ZnO Electron Transport Layers

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
High Efficiency Low-Temperature Processed Perovskite Solar Cells Integrated with Alkali Metal Doped ZnO Electron Transport Layers
Author
Azmi, RandiHwang, SunbinYin, WenpingKim, Tae-WookAhn, Tae KyuJang, Sung-Yeon
Issue Date
2018-06
Publisher
AMER CHEMICAL SOC
Citation
ACS ENERGY LETTERS, v.3, no.6, pp.1241 - 1246
Abstract
Herein, we achieved, air-stable low-temperature processed PSC (L-PSC) using alkali-metal modified ZnO ETLs. Using a simple chemical alkali-metal modification method, the surface defects of the ZnO were effectively passivated. As a result, the interfacial decomposition reactions were suppressed, while raising the Fermi energy level and enhancing electron mobility. The improved interfacial charge transfer and internal electric field in the developed L-PSC using K modified ZnO (ZnO-K) exhibited an improved power conversion efficiency (PCE) of 19.90% with negligible hysteresis, while a pristine ZnO based L-PSC exhibited a PCE of 16.10% with significant hysteresis. The ZnO-K based L-PSC also exhibited remarkably higher long-term air-storage stability (91% retention after 800 h) than pristine ZnO based L-PSCs (36% retention after 800 h) due to the suppressed decomposition reactions. The PCE and air stability of our L-PSC with the modified ZnO are among the highest reported for PSCs processed at <= 150 degrees C.
URI
https://scholarworks.unist.ac.kr/handle/201301/26762
URL
https://pubs.acs.org/doi/10.1021/acsenergylett.8b00493
DOI
10.1021/acsenergylett.8b00493
ISSN
2380-8195
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU