Hole transport layer free bulk heterojunction organic solar cells with high work function ITO anodes

Hole transport layer free bulk heterojunction organic solar cells with high work function ITO anodes

In this work, hole transport layer (HTL) free bulk heterojunction organic solar cells (BHJ-OSCs) based on PTB7:PCBM as active layer have been fabricated by employing various ITO anodes with different work function. The power conversion efficiency of the BHJ-OSCs is significantly improved from 3.76 t...

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Main Authors: Wenhui Lu, Yiran peng, Qiyin Chen, Wei Tang, Tao Pang, Shuai Zhang, Zhixin liu, Lei Yan, Xingzhu Wang
Format: Article
Language:English
Published: AIP Publishing LLC 2018-09-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5049424
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spelling doaj-3869f7bf27ad42098182aa9b5aaef6922020-11-25T00:39:10ZengAIP Publishing LLCAIP Advances2158-32262018-09-0189095027095027-610.1063/1.5049424099809ADVHole transport layer free bulk heterojunction organic solar cells with high work function ITO anodesWenhui Lu0Yiran peng1Qiyin Chen2Wei Tang3Tao Pang4Shuai Zhang5Zhixin liu6Lei Yan7Xingzhu Wang8Department of Applied Physics, College of Science, Huzhou University, Huzhou, Zhejiang 313000, P. R. ChinaDepartment of Applied Physics, College of Science, Huzhou University, Huzhou, Zhejiang 313000, P. R. ChinaDepartment of Applied Physics, College of Science, Huzhou University, Huzhou, Zhejiang 313000, P. R. ChinaColleges of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, P. R. ChinaDepartment of Applied Physics, College of Science, Huzhou University, Huzhou, Zhejiang 313000, P. R. ChinaDepartment of Applied Physics, College of Science, Huzhou University, Huzhou, Zhejiang 313000, P. R. ChinaColleges of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, P. R. ChinaColleges of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, P. R. ChinaColleges of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, P. R. ChinaIn this work, hole transport layer (HTL) free bulk heterojunction organic solar cells (BHJ-OSCs) based on PTB7:PCBM as active layer have been fabricated by employing various ITO anodes with different work function. The power conversion efficiency of the BHJ-OSCs is significantly improved from 3.76 to 8.47% with increasing the work function of the ITO anode. By combining Mott–Schottky curves, external quantum efficiency and reflectance spectra of the BHJ-OSCs, we identify that the improved optoelectronic conversion due to the enhanced built-in electric field within the active layer which is induced by the high work function ITO anodes. The hole transport layer free device structure can be considered for the fabrication of cost-effective BHJ-OSCs due to their simple structure and high efficiency.http://dx.doi.org/10.1063/1.5049424
collection DOAJ
language English
format Article
sources DOAJ
author Wenhui Lu
Yiran peng
Qiyin Chen
Wei Tang
Tao Pang
Shuai Zhang
Zhixin liu
Lei Yan
Xingzhu Wang
spellingShingle Wenhui Lu
Yiran peng
Qiyin Chen
Wei Tang
Tao Pang
Shuai Zhang
Zhixin liu
Lei Yan
Xingzhu Wang
Hole transport layer free bulk heterojunction organic solar cells with high work function ITO anodes
AIP Advances
author_facet Wenhui Lu
Yiran peng
Qiyin Chen
Wei Tang
Tao Pang
Shuai Zhang
Zhixin liu
Lei Yan
Xingzhu Wang
author_sort Wenhui Lu
title Hole transport layer free bulk heterojunction organic solar cells with high work function ITO anodes
title_short Hole transport layer free bulk heterojunction organic solar cells with high work function ITO anodes
title_full Hole transport layer free bulk heterojunction organic solar cells with high work function ITO anodes
title_fullStr Hole transport layer free bulk heterojunction organic solar cells with high work function ITO anodes
title_full_unstemmed Hole transport layer free bulk heterojunction organic solar cells with high work function ITO anodes
title_sort hole transport layer free bulk heterojunction organic solar cells with high work function ito anodes
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2018-09-01
description In this work, hole transport layer (HTL) free bulk heterojunction organic solar cells (BHJ-OSCs) based on PTB7:PCBM as active layer have been fabricated by employing various ITO anodes with different work function. The power conversion efficiency of the BHJ-OSCs is significantly improved from 3.76 to 8.47% with increasing the work function of the ITO anode. By combining Mott–Schottky curves, external quantum efficiency and reflectance spectra of the BHJ-OSCs, we identify that the improved optoelectronic conversion due to the enhanced built-in electric field within the active layer which is induced by the high work function ITO anodes. The hole transport layer free device structure can be considered for the fabrication of cost-effective BHJ-OSCs due to their simple structure and high efficiency.
url http://dx.doi.org/10.1063/1.5049424
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