Low-indium content bilayer transparent conducting oxide thin films as effective anodes in organic photovoltaic cells

Jun Liu, Alexander W. Hains, Lian Wang, Tobin J Marks

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Bilayer In-doped CdO/Sn-doped In2O3 (CIO/ITO) transparent conducting oxide (TCO) thin films were prepared by depositing thin ITO films by ion-assisted deposition on CIO films grown by metal-organic chemical vapor deposition. The optical, electrical, and microstructural properties of these bilayer TCO films were investigated in detail. A low sheet resistance of ~ 4.9 Ω/□ is achieved for the CIO/ITO (170/40 nm) bilayers without annealing. With a significantly lower In content (20 vs. ~ 93 at.%) and a much higher conductivity (> 12,000 vs. 3000-5000 S/cm) than commercial ITO, these bilayer films were investigated as anodes in bulk-heterojunction organic photovoltaic (OPV) devices having a poly(2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylenevinylene) + [6,6]-phenyl C61 butyric acid methyl ester active layer. Device performance metrics in every way comparable to those of devices fabricated on commercial ITO are achieved, demonstrating that CIO/ITO bilayers are promising low-In content, highly conductive and transparent electrode candidates for OPV cells.

Original languageEnglish
Pages (from-to)3694-3699
Number of pages6
JournalThin Solid Films
Volume518
Issue number14
DOIs
Publication statusPublished - May 3 2010

Fingerprint

Indium
Photovoltaic cells
photovoltaic cells
ITO (semiconductors)
Oxide films
indium
Anodes
anodes
conduction
Thin films
oxides
thin films
Organic Chemicals
Butyric acid
Sheet resistance
Organic chemicals
Heterojunctions
Chemical vapor deposition
Esters
Metals

Keywords

  • Bilayer
  • Low-indium
  • Organic photovoltaics
  • Solar cells
  • Transparent conducting oxides

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Low-indium content bilayer transparent conducting oxide thin films as effective anodes in organic photovoltaic cells. / Liu, Jun; Hains, Alexander W.; Wang, Lian; Marks, Tobin J.

In: Thin Solid Films, Vol. 518, No. 14, 03.05.2010, p. 3694-3699.

Research output: Contribution to journalArticle

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