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Synthesis of Nanoscale Semiconductor Heterostructures for Photovoltaic Applications

Abstract Details

2010, Master of Science (MS), Bowling Green State University, Physics.
With the demand for renewable sources of energy on the rise, significant effort needs to be invested in the development of inexpensive and efficient light-harvesting materials. Among those, colloidal semiconductor nanocrystals are emerging as a promising class of nanomaterials with the potential to produce a significant technological impact on solar cell and photodetection industries. One branch, multicomponent semiconductor nanocrystals, is of special interest. NCs offer the key advantages of bulk semiconductors, thermal stability, excellent absorbance across the solar spectrum, and a high density of states in the conduction band, while their nanoscale dimensions allow for a tuning of their bandgaps and easy solution processing of as-prepared nanoparticle colloids into thin film devices. The benefit of the multicomponent nanocrystals is the ability to tailor the spatial distribution of the carriers in one of two ways. By varying the coupled semiconductor materials, both carriers can reside on one side of the materials' junction (type-I heterostructure), or on opposite sides of it (type-II heterostructure). Here we report on a colloidal synthesis of PbSe/TiO2 heterostructures, comprising small-diameter PbSe nanocrystals epitaxially grown onto the surface of TiO2 nanorods, colloidal deposition of plasmatic-size gold tips onto semiconductor nanorods under ambient light, and a colloidal synthesis of a PbSxTe1-x semiconductor nanocrystals alloy.
Mikhail Zamkov, PhD (Advisor)
Robert Boughton, PhD (Committee Member)
Lewis Fulcher, PhD (Committee Chair)
74 p.

Recommended Citations

Citations

  • Nemitz, I. R. (2010). Synthesis of Nanoscale Semiconductor Heterostructures for Photovoltaic Applications [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1277087935

    APA Style (7th edition)

  • Nemitz, Ian. Synthesis of Nanoscale Semiconductor Heterostructures for Photovoltaic Applications. 2010. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1277087935.

    MLA Style (8th edition)

  • Nemitz, Ian. "Synthesis of Nanoscale Semiconductor Heterostructures for Photovoltaic Applications." Master's thesis, Bowling Green State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1277087935

    Chicago Manual of Style (17th edition)