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Band-gap engineering of ZnO1-xSx films grown by rf magnetron sputtering of ZnS target
Fedkovich Chernivtsi National University, Ukraine.
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, Faculty of Science & Engineering. NAS Ukraine, Ukraine.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
2015 (English)In: Vacuum, ISSN 0042-207X, E-ISSN 1879-2715, Vol. 121, 120-124 p.Article in journal (Refereed) Published
Abstract [en]

Structural and optical properties of ZnO1-xSx (0 less than= x less than= 1.0) thin films grown onto sapphire substrates (c-Al2O3) at 300 degrees C by radio frequency (rf) magnetron sputtering of ZnS ceramic target are studied. A possibility of purposeful controlling sulfur content and, as consequence, ZnO1-xSx band gap energy via changing the ratio of the partial pressures of argon and oxygen are revealed. Linear dependence of ZnO lattice parameter c on S content suggests that structural properties of single-phase ternary alloys in the composition range between ZnO and ZnS obey Vegards law. The mechanisms of influence of gas mixing ratio on film growth and band gap energy are discussed. Cu(In,Ga)Se-2 (CIGS)-based heterojunction solar cells with ZnO1-xSx buffer layers were fabricated by one-cycle magnetron sputtering procedure. Electrical characteristics of Cd-free devices are comparable to those of CdS-containing photovoltaic heterostructures, thereby indicating prospects of using ZnO1-xSx layers for fabrication of CIGS solar cells. (C) 2015 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2015. Vol. 121, 120-124 p.
Keyword [en]
ZnO; ZnS; Band-gap energy; Film deposition; Bowing parameter; Solar cells
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-122416DOI: 10.1016/j.vacuum.2015.08.008ISI: 000362619000019OAI: oai:DiVA.org:liu-122416DiVA: diva2:866325
Note

Funding Agencies|Swedish Institute

Available from: 2015-11-02 Created: 2015-11-02 Last updated: 2017-12-01

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Khranovskyy, VolodymyrYakimova, Rositsa
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