Enhanced light-harvesting by integrating synergetic microcavity and plasmonic effects for high-performance ITO-free flexible polymer solar cells

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

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Author(s)

  • Kai Yao
  • Xu-Kai Xin
  • Chu-Chen Chueh
  • Kung-Shih Chen
  • Yun-Xiang Xu

Detail(s)

Original languageEnglish
Pages (from-to)567-574
Journal / PublicationAdvanced Functional Materials
Volume25
Issue number4
Online published6 Dec 2014
Publication statusPublished - 28 Jan 2015
Externally publishedYes

Abstract

In this work, a high-performance ITO-free flexible polymer solar cell (PSC) is successfully described by integrating the plasmonic effect into the ITO-free microcavity architecture. By carefully controlling the sizes of embedded Ag nanoprisms and their doping positons in the stratified device, a significant enhancement in power conversion efficiency (PCE) is shown from 8.5% (reference microcavity architecture) to 9.4% on flexible substrates. The well-manipulated plasmonic resonances introduced by the embedded Ag nanoprisms with different LSPR peaks allow the complementary light-harvesting with microcavity resonance in the regions of 400-500 nm and 600-700 nm, resulting in the substantially increased photocurrent. This result not only signifies that the spectral matching between the LSPR peaks of Ag nanoprisms and the relatively low absorption response of photoactive layer in the microcavity architecture is an effective strategy to enhance light-harvesting across its absorption region, but also demonstrates the promise of tailoring two different resonance bands in a synergistic manner at desired wavelength region to enhance the efficiency of PSCs.

Research Area(s)

  • flexible polymer solar cells, ITO free, microcavity effects, plasmonic effects, resonance bands

Citation Format(s)

Enhanced light-harvesting by integrating synergetic microcavity and plasmonic effects for high-performance ITO-free flexible polymer solar cells. / Yao, Kai; Xin, Xu-Kai; Chueh, Chu-Chen; Chen, Kung-Shih; Xu, Yun-Xiang; Jen, Alex K.-Y.

In: Advanced Functional Materials, Vol. 25, No. 4, 28.01.2015, p. 567-574.

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