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Photoconductivity Spectroscopy of Deep Level Defects of ZnO Thin Films Grown by Thermal Evaporation

Steward, Ian
http://rave.ohiolink.edu/etdc/view?acc_num=miami1283472110

Abstract Details

2010, Master of Science, Miami University, Physics.
ZnO is a well studied semiconductor that possesses great potential for creating high quality photovoltaic devices. Because of its low exciton binding energy, large band gap, low dielectric constant, and low cost, much effort has been devoted to developing p-type ZnO (necessary for forming robust homojunctions for photovoltaic devices). New samples have been synthesized using a thermal evaporation technique and their photoconductive transient behaviors are characterized versus temperature and incident light energy. A Laplace transform method of Deep-Level Transient Spectroscopy (DLTS) is used to find the distribution of photo-excited states. Results show that these new samples exhibit a two peak energy fingerprint pointing to two defects within the material. Conclusions are that these samples contain high levels of oxygen defects as well as a lower concentration of another defect.
Jeffrey Clayhold, PhD (Advisor)
Michael Pechan, PhD (Committee Member)
Herbert Jaeger, PhD (Committee Member)
41 p.
Physics
ZnO Thin Film; Persistent Photoconductivity; Deep Level Spectroscopy; Laplace Deep Level Spectroscopy

Recommended Citations

Citations

  • Steward, I. (2010). Photoconductivity Spectroscopy of Deep Level Defects of ZnO Thin Films Grown by Thermal Evaporation [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1283472110

    APA Style (7th edition)

  • Steward, Ian. Photoconductivity Spectroscopy of Deep Level Defects of ZnO Thin Films Grown by Thermal Evaporation. 2010. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1283472110.

    MLA Style (8th edition)

  • Steward, Ian. "Photoconductivity Spectroscopy of Deep Level Defects of ZnO Thin Films Grown by Thermal Evaporation." Master's thesis, Miami University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1283472110

    Chicago Manual of Style (17th edition)

miami1283472110
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© 2010, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.