Electrical and optical properties of yttrium-doped zinc oxide by spray pyrolysis for solar cell applications

Kunhee Han, Lilly Q. Guo, Nigel D. Shepherd, Meng Tao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

A low-cost transparent conducting oxide (TCO) suitable for terawatt-scale solar cells is reported. The zinc oxide TCO is prepared by spray pyrolysis deposition and is doped with an abundant group IIIB element, yttrium (ZnO:Y). The deposition was carried out at 475°C on quartz substrate. The dependence of the electrical, structural and optical properties of ZnO:Y on deposition and post-annealing conditions was investigated. The important variables for low-resistivity ZnO:Y include Y concentration in the spray solution, post-annealing ambient and type of solvent. The lowest resistivity obtained so far is 1.14×10 -2 Ω-cm for a ZnO:Y film deposited from a solution containing 100 mM Zn precursor, 0.4 mM Y precursor, methanol as the solvent, and post-annealed in vacuum at 500°C for 60 minutes. The transmittance of ZnO:Y is high above 85% in the visible range. The Zn/O ratio in ZnO:Y and its correlation to the resistivity of ZnO:Y suggest that Zn interstitials and O vacancies play a significant role in controlling the electrical properties of ZnO:Y.

Original languageEnglish (US)
Title of host publicationProgram - 37th IEEE Photovoltaic Specialists Conference, PVSC 2011
Pages1275-1279
Number of pages5
DOIs
StatePublished - Dec 1 2011
Externally publishedYes
Event37th IEEE Photovoltaic Specialists Conference, PVSC 2011 - Seattle, WA, United States
Duration: Jun 19 2011Jun 24 2011

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Other

Other37th IEEE Photovoltaic Specialists Conference, PVSC 2011
CountryUnited States
CitySeattle, WA
Period6/19/116/24/11

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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    Han, K., Guo, L. Q., Shepherd, N. D., & Tao, M. (2011). Electrical and optical properties of yttrium-doped zinc oxide by spray pyrolysis for solar cell applications. In Program - 37th IEEE Photovoltaic Specialists Conference, PVSC 2011 (pp. 1275-1279). [6186190] (Conference Record of the IEEE Photovoltaic Specialists Conference). https://doi.org/10.1109/PVSC.2011.6186190