Plasmonic effects on bulk heterojunction polymer solar cells: A transient photovoltage and differential charging Study

Soon Yie Kok, Zong Chun Hsieh, Chun Hsien Chou, Shun Shing Yang, Ming Kai Chuang, Yu Tung Lin, Seong Shan Yap, Teck Yong Tou, Fang-Chung Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Transient photovoltage and differential charging experiments have been carried out to investigate the plasmonic effects in organic photovoltaic devices (OPVs). We observed that the carrier lifetimes became longer after the Au nanoparticles were blended into the OPVs. Additionally, the charge carrier densities also became higher in the bulk of the device. The carrier lifetime, however, usually follows an inverse power relationship with the increasing charge density in OPVs fabricated base on the concept of bulk heterojunctions. Therefore, we conclude that one of the limitations for the plasmonic approaches could be the strong bimolecular recombination.

Original languageEnglish
Pages (from-to)1435-1439
Number of pages5
JournalScience of Advanced Materials
Volume9
Issue number8
DOIs
StatePublished - 1 Jan 2017

Keywords

  • Nanoparticle
  • Photovoltaic
  • Plasmonic
  • Polymer
  • Transient

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