Biomimetic Electrodes for Flexible Organic Solar Cells with Efficiencies over 16%

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Tian-Yi Qu
  • Li-Jian Zuo
  • Jing-De Chen
  • Xueliang Shi
  • Ting Zhang
  • Ling Li
  • Kong-Chao Shen
  • Hao Ren
  • Shu Wang
  • Feng-Ming Xie
  • Yan-Qing Li
  • Jian-Xin Tang

Detail(s)

Original languageEnglish
Article number2000669
Journal / PublicationAdvanced Optical Materials
Volume8
Issue number17
Online published8 Jun 2020
Publication statusPublished - 4 Sep 2020

Abstract

Flexible organic solar cells (OSCs) are very promising for use in portable power supply devices due to the advantages of low-cost, light-weight, and flexibility. However, the efficiencies of flexible OSCs are limited by the flexible transparent electrodes owing to their nonoptimal electrical, optical, and mechanical properties. To address these challenges, leaf-like biomimetic electrodes are proposed to achieve an efficient light capture and glossy surface for a high-efficiency flexible OSC. To mimic the internal anatomy of the leaf, the conformable electrode stack consists of a flexible polyimide substrate, light-scattering polystyrene spheres, zinc oxide protecting layer, and electrically conductive silver nanowires to obtain a high transmittance, low sheet resistance, and low surface roughness. A record-high power conversion efficiency of 16.1% is realized by a flexible OSC with the biomimetic electrode design, comparable to those rigid devices on glass. Moreover, the flexible OSC on this biomimetic electrode exhibits a robust bendability against flexural strain, retaining 85% of the initial efficiency after 5000 bending cycles at a radius of curvature as small as 1.0 mm.

Research Area(s)

  • colorless polyimide, flexible electrodes, light manipulation, organic solar cells, polystyrene spheres

Citation Format(s)

Biomimetic Electrodes for Flexible Organic Solar Cells with Efficiencies over 16%. / Qu, Tian-Yi; Zuo, Li-Jian; Chen, Jing-De; Shi, Xueliang; Zhang, Ting; Li, Ling; Shen, Kong-Chao; Ren, Hao; Wang, Shu; Xie, Feng-Ming; Li, Yan-Qing; Jen, Alex K.-Y.; Tang, Jian-Xin.

In: Advanced Optical Materials, Vol. 8, No. 17, 2000669, 04.09.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review