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Park, Hyesung
Low-Dimensional Materials & Energy Conversion Lab
Research Interests
  • Nano materials, renewable energy, optoelectronic devices

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Flexible Graphene Electrode-Based Organic Photovoltaics with Record-High Efficiency

Cited 13 times inthomson ciCited 11 times inthomson ci
Title
Flexible Graphene Electrode-Based Organic Photovoltaics with Record-High Efficiency
Author
Park, HyesungChang, SehoonZhou, XiangKong, JingPalacios, TomasGradecak, Silvija
Issue Date
2014-09
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.14, no.9, pp.5148 - 5154
Abstract
Advancements in the field of flexible high-efficiency solar cells and other optoelectronic devices will strongly depend on the development of electrode materials with good conductivity and flexibility. To address chemical and mechanical instability of currently used indium tin oxide (ITO), graphene has been suggested as a promising flexible transparent electrode but challenges remain in achieving high efficiency of graphene-based polymer solar cells (PSCs) compared to their ITO-based counterparts. Here we demonstrate graphene anode- and cathode-based flexible PSCs with record-high power conversion efficiencies of 6.1 and 7.1%, respectively. The high efficiencies were achieved via thermal treatment of MoO3 electron blocking layer and direct deposition of ZnO electron transporting layer on graphene. We also demonstrate graphene-based flexible PSCs on polyethylene naphthalate substrates and show the device stability under different bending conditions. Our work paves a way to fully graphene electrode-based flexible solar cells using a simple and reproducible process
URI
https://scholarworks.unist.ac.kr/handle/201301/11967
URL
http://pubs.acs.org/doi/abs/10.1021/nl501981f
DOI
10.1021/nl501981f
ISSN
1530-6984
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