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Polymers 2018, 10(1), 5; https://doi.org/10.3390/polym10010005

Recent Development in ITO-free Flexible Polymer Solar Cells

1,†,* , 2,†
,
2
,
2
,
2,* and 2,*
1
Department of Physics, Hebei Normal University of Science & Technology, Qinhuangdao 066004, China
2
Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
These authors contributed equally.
*
Authors to whom correspondence should be addressed.
Received: 16 November 2017 / Revised: 19 December 2017 / Accepted: 20 December 2017 / Published: 22 December 2017
(This article belongs to the Special Issue Polymer Solar Cells)
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Abstract

Polymer solar cells have shown good prospect for development due to their advantages of low-cost, light-weight, solution processable fabrication, and mechanical flexibility. Their compatibility with the industrial roll-to-roll manufacturing process makes it superior to other kind of solar cells. Normally, indium tin oxide (ITO) is adopted as the transparent electrode in polymer solar cells, which combines good conductivity and transparency. However, some intrinsic weaknesses of ITO restrict its large scale applications in the future, including a high fabrication price using high temperature vacuum deposition method, scarcity of indium, brittleness and scaling up of resistance with the increase of area. Some substitutes to ITO have emerged in recent years, which can be used in flexible polymer solar cells. This article provides the review on recent progress using other transparent electrodes, including carbon nanotubes, graphene, metal nanowires and nanogrids, conductive polymer, and some other electrodes. Device stability is also discussed briefly. View Full-Text
Keywords: polymer solar cells; transparent electrodes; performance; flexibility; stability polymer solar cells; transparent electrodes; performance; flexibility; stability
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Lu, S.; Sun, Y.; Ren, K.; Liu, K.; Wang, Z.; Qu, S. Recent Development in ITO-free Flexible Polymer Solar Cells. Polymers 2018, 10, 5.

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