Al-doped ZnO film as a transparent conductive substrate in indoline-sensitized nanoporous ZnO solar cell

B. Onwona-Agyeman, M. Nakao, G. R.A. Kumara, T. Kitaoka

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We have deposited porous ZnO films on aluminum-doped ZnO (ZnO/AZO) and fluorine-doped tin oxide (ZnO/FTO) transparent substrates, and annealed both in air at 500°C. X-ray diffraction measurements of the nanoporous ZnO films after heat treatment showed that, ZnO/AZO film exhibited a dominant (002) diffraction while the ZnO/FTO showed mixed diffraction peaks with the (100) and (101) being dominant. Dye-sensitized solar cells (DSC) based on the sensitization of the porous ZnO films on AZO and FTO substrates with an indoline dye were constructed. The photoaction spectrum, which is a measure of the degree of sunlight harvesting, was broad and higher in the ZnO/AZO DSC than that of the ZnO/FTO DSC. Conversion efficiency of 7.3% was obtained for the ZnO/AZO DSC while 4.5% was recorded for the ZnO/FTO. The superior photovoltaic performance of the ZnO/AZO DSC is attributed to better ZnO film orientation after thermal treatment and the higher sunlight harvesting.

Original languageEnglish
Title of host publicationOxide Semiconductors and Thin Films
Pages345-350
Number of pages6
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2012 MRS Fall Meeting - Boston, MA
Duration: 25 Nov 201230 Nov 2012

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1494
ISSN (Print)0272-9172

Conference

Conference2012 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA
Period25/11/1230/11/12

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