A Study of Inverted Structure Polymer Solar Cell using ZnO with Low Temperature Process

Jae-Min Jeon; Dong-Yeol Shin; Woo-Jin  Jeong; Hee-Jung Kwak; Jun-Young Kim

doi:10.7836/kses.2021.41.3.039

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2021 Vol.41, Issue 3 Preview Page Next Page

Research Article

A Study of Inverted Structure Polymer Solar Cell using ZnO with Low Temperature Process 저온공정 ZnO 적용에 따른 역구조 고분자 태양전지 소자 성능 연구

30 June 2021. pp. 39-50

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Abstract

Recently, active research is being conducted on polymer solar cells to improve power conversion efficiency by developing new device structures, synthesizing polymer materials, and applying them to charge extraction layers. In this study, we analyzed the influence of ZnO on the performance of solar cells by using various ZnO thin films (using the high and low temperature sol-gel processes and the nanoparticle process) as an electron extraction layer in inverted polymer solar cells based on PBDB-T:ITIC. The ZnO thin film was formed by the high-temperature (450°C) sol-gel process, which resulted in an increase in the sheet resistance of the ITO electrode by five times. As a result, the power conversion efficiency of the polymer solar cells was low (4.12%). Conversely, in the nanoparticle process, butanol-based ZnO exhibited better dispersion and surface properties than the IPA-based ZnO, resulting in improved performance of the polymer solar cell (PCE of 6.35% and 4.58% with butanol and IPA-based ZnO, respectively). Additionally, a ZnO precursor solution was developed using the low-temperature (150°C) sol-gel process, which was applied as an electron extraction layer in an inverted polymer solar cell. Consequently, the device performance significantly improved (PCE of 8.89%)due to the formation of a ripple-shaped surface, which facilitated the extraction of electrons due to the excellent surface roughness.

Keywords

Power Conversion Efficiency

Electron Extraction layer

sol-gel process

Nanoparticle Process

Zinc Oxide

low-temperature process

키워드

전력변환효율

전자추출층

졸젤법

나노입자법

산화아연

저온공정

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Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 41
No :3
Pages :39-50
Received Date : 2021-04-07
Revised Date : 2021-05-03
Accepted Date : 2021-05-06
DOI :https://doi.org/10.7836/kses.2021.41.3.039

Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

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