Solution-Processed Nanocrystalline TiO2 Buffer Layer Used for Improving the Performance of Organic Photovoltaics

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Teddy Salim
  • Zongyou Yin
  • Shuangyong Sun
  • Xiao Huang
  • Yeng Ming Lam

Detail(s)

Original languageEnglish
Pages (from-to)1063-1067
Journal / PublicationACS Applied Materials and Interfaces
Volume3
Issue number4
Online published11 Mar 2011
Publication statusPublished - 27 Apr 2011
Externally publishedYes

Abstract

In this study, we use solution-processable crystalline TiO2 nanoparticles as a buffer layer between the active layer and aluminum cathode to fabricate the P3HT:PCBM-based bulk heterojunction (BHJ) organic photovoltaic (OPV) devices. The employment of the presynthesized TiO2 nanoparticles simplifies the fabrication of OPV devices because of the elimination of an additional hydrolysis step of precursors in air. The fabricated OPV devices with the thermally stable TiO2 buffer layer are subjected to the further postdeposition thermal annealing, resulting in a power conversion efficiency (PCE) as high as 3.94%. The improved device performance could be attributed to the electron transporting and hole blocking capabilities due to the introduced TiO2 buffer layer. © 2011 American Chemical Society.

Research Area(s)

  • buffer layer, bulk heterojunction, nanoparticles, photovoltaics, polythiophene, TiO2

Citation Format(s)

Solution-Processed Nanocrystalline TiO2 Buffer Layer Used for Improving the Performance of Organic Photovoltaics. / Salim, Teddy; Yin, Zongyou; Sun, Shuangyong et al.
In: ACS Applied Materials and Interfaces, Vol. 3, No. 4, 27.04.2011, p. 1063-1067.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review