Efficient semitransparent bulk-heterojunction organic photovoltaic cells with high-performance low processing temperature indium-tin oxide top electrode

Xizu Wang*, Ging Meng Ng, Jian Wei Ho, Hoi Lam TAM, Fu Rong ZHU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

An efficient semitransparent bulk-heterojunction zinc phthalocyanine (ZnPc): fullerene (C60)-based photovoltaic cell with a transparent cathode of Ag/LiF/indiumtin oxide (ITO) is demonstrated. The top ITO layer serves not only as an index matching layer to enhance the light in-coupling in semitransparent small molecule photovoltaic cells, but also improves current spreading due to its superior optical transparency and high electric conductivity. In order to avoid causing damages to the underlying functional photoactive organic layers, the ITO top electrode was formed at room temperature without intentional heating. Optimization of light distribution in the semitransparent ZnPc:C 60 photovoltaic cells was performed using an optical admittance analysis. The performance of the semitransparent organic photovoltaic cells is optimized over the two competing parameter of power conversion efficiency (PCE) and optical transparency. Semitransparent bulk-heterojunction ZnPc:C60 photovoltaic cells with an average transmission of more than 40 in the visible light region and a PCE of ∼ 3.0% measured under simulated AM1.5G illumination of 100 mW/cm2 were obtained.

Original languageEnglish
Article number5491042
Pages (from-to)1685-1689
Number of pages5
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume16
Issue number6
DOIs
Publication statusPublished - Nov 2010

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

User-Defined Keywords

  • Bulk heterojunction
  • low processing temperature
  • organic photovoltaic (OPV)
  • semitransparent

Fingerprint

Dive into the research topics of 'Efficient semitransparent bulk-heterojunction organic photovoltaic cells with high-performance low processing temperature indium-tin oxide top electrode'. Together they form a unique fingerprint.

Cite this