Enhanced thermal stability of organic solar cells on nano structured electrode by simple acid etching

Ming Liang Jin, Jong Kil Choi, Dae Woo Kim, Jong Min Park, Cheng Jin An, Hyeong Jun Kim, Bumjoon J. Kim, Ying Diao, Hee Tae Jung

Research output: Contribution to journalArticlepeer-review

Abstract

The long-term thermal stability of organic photovoltaic device has been emerged as a crucial characteristic to satisfy the demand of industry requiring lifespan of 20 year. In this paper, etched indium-tin-oxide (ITO) nanoelectrodes are employed to enhance the thermal stability and power conversion efficiency in poly(3hexylthiophene):methanofullerene bulk-heterojunction solar cells. A simple etching process for the ITO electrode was carried out using a hydrochloric acid solvent in order to significantly increase the roughness of the ITO surface. This nanostructured ITO not only induced efficient light harvesting, but also acted as a barrier that suppressed the PCBM phase separation, resulting in the lifespan increased from 33 h to 77 h during thermal annealing.

Original languageEnglish (US)
Pages (from-to)680-684
Number of pages5
JournalOrganic Electronics
Volume15
Issue number3
DOIs
StatePublished - Mar 2014
Externally publishedYes

Keywords

  • Acid etching
  • Bulk-heterojunction
  • Nanoelectrodes
  • Organic photovoltaic
  • Thermal stability

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

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