Hybrid inverted bulk heterojunction solar cells with nanoimprinted TiO2 nanopores

  • Woon Hyuk Baek
  • , Il Seo
  • , Tae Sik Yoon
  • , Hyun Ho Lee
  • , Chong Man Yun
  • , Yong Sang Kim

Research output: Contribution to journalArticlepeer-review

Abstract

Photovoltaic devices with highly ordered nanoporous titanium dioxide (titania; TiO2) were fabricated to improve the photovoltaic performances by increasing TiO2 interface area. The nanoimprinting lithography technique with polymethyl methacrylate (PMMA) mold was used to form titania nanopores. The solar cell with poly(3-hexylthiophene) (P3HT):[6,6]-phenyl C61 butyric acid methyl ester (PCBM) active layer on nanoporous titania showed higher power conversion efficiency (PCE) of 1.49% than on flat titania of 1.18%. The improved efficiency using nanoporous titania is interpreted with the enhanced-charge separation and collection by increasing the interface area between TiO2 and active layer.

Original languageEnglish
Pages (from-to)1587-1591
Number of pages5
JournalSolar Energy Materials and Solar Cells
Volume93
Issue number9
DOIs
StatePublished - Sep 2009
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Hybrid solar cells
  • Interface area
  • Inverted structure
  • Nanoporous TiO
  • Organic solar cells

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