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Optimization and Characterization of Transparent Oxide Layers for CIGS solar cells fabrication

Liu, Qiudi
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1187376131

Abstract Details

2007, Master of Science, University of Toledo, Physics.
In this thesis, we studied the structural, electrical, and optical properties of three different transparent oxides compounds in their thin film forms. These three compounds were aluminum doped zinc oxide (ZnO:Al), indium tin oxide (ITO) and intrinsic zinc oxide (ZnO). These films are a critical part of Cu(In,Ga)Se2 solar cells, as they play the role of the front contact collecting the photo-generated carriers while letting the photons penetrate into the active semiconductor layers. The films were deposited by radio frequency (r.f.) magnetron sputtering on soda lime glass. We investigated the change of the thin film properties in terms of the main deposition parameters: deposition pressure, substrate temperature, and target r.f. power. Similar trends were found for ZnO:Al and ITO, which were correlated with results from the literature. The optical band gap and the conductivity tend to decrease for increased deposition pressure, while they increase for increased substrate temperature or target power. The crystallinity and the surface roughness tend to increase for an increase of all three parameters, even if some parabolic shapes are obtained for some of the properties. For the ZnO films, the optical band gap and the conductivity do not change with the deposition pressure, substrate temperature or target power, while the crystallinity and the surface roughness tend to increase. These results were correlated with references from other research group.
Sylvain Marsillac (Advisor)
117 p.
Physics, Condensed Matter
Solar cells; CIGS; Sputtering; TCO layer

Recommended Citations

Citations

  • Liu, Q. (2007). Optimization and Characterization of Transparent Oxide Layers for CIGS solar cells fabrication [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1187376131

    APA Style (7th edition)

  • Liu, Qiudi. Optimization and Characterization of Transparent Oxide Layers for CIGS solar cells fabrication. 2007. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1187376131.

    MLA Style (8th edition)

  • Liu, Qiudi. "Optimization and Characterization of Transparent Oxide Layers for CIGS solar cells fabrication." Master's thesis, University of Toledo, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1187376131

    Chicago Manual of Style (17th edition)

toledo1187376131
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© 2007, all rights reserved.
This open access ETD is published by University of Toledo and OhioLINK.