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

Content Provider	IEEE Xplore Digital Library
Author	Kunhee Han Guo, L.Q. Shepherd, N.D. Meng Tao
Copyright Year	2011
Description	Author affiliation: Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203, USA (Shepherd, N.D.) \|\| Tao Companies LLC, Colleyville, TX 76034, USA (Kunhee Han; Guo, L.Q.) \|\| Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019, USA (Meng Tao)
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.
Starting Page	001275
Ending Page	001279
File Size	201567
Page Count	5
File Format	PDF
ISBN	9781424499663
ISSN	01608371
e-ISBN	9781424499656
DOI	10.1109/PVSC.2011.6186190
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Films Conductivity Zinc oxide Annealing Substrates Photovoltaic cells
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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