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Optoelectronic Characteristics of Inorganic Nanocrystals and Their Solids

Royo Romero, Luis
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555422820907262

Abstract Details

2019, Master of Science (MS), Bowling Green State University, Physics.
The fast-developing field of inorganic optoelectronic devices offers a valuable approach to control many of their properties. However, their functionality is constraint by the different limitation in nanocrystals and bulk properties. Digestive ripening (DR) is a technique to improve the size homogeneity of nanocrystals. The DR process in semiconductors lies in the thermal coalescence triggering the control over the particle size and size dispersion for temperatures above the threshold value (Tth = 200 – 220 °C). Such control allows the development of inverse energy-gradient core/shell nanocrystal architectures, an assembly that exhibits quantum confined properties in a nanoparticle larger than the exciton Bohr radius, which addresses many of the thin-film limits on interparticle boundaries and thus electrical resistance. The core/shell geometry promotes the localization of exciton in the shell domain, highlighted under the excitonic energy transfer interaction between a colloidal semiconductor and various nanoscale species. Further investigations look into plasmon-induced resonance energy transfer (PIRET) to convert the plasmon-concentrated field into useful energy by coupling plasmon evanescent field to a semiconductor absorber via a dipole-dipole interaction. This unexplored field has a promising conversation of light in photovoltaics devices. The band gap emission of fabricated nanoshells, with diameter sizes ranging from 15 – 30 nm, revealed the size-dependent tunability with an associated quantum yield in the 4.4 – 16.0% range. This thesis will also inform on strategies for probing the energy transfer in nanocrystal-based assemblies, some challenges associated with the application of PIRET mechanisms in nanostructure systems and extend many of the approaches to beyond semiconductors and nanoparticles morphologies.
Mikhail Zamkov (Advisor)
Liangfeng Sun (Committee Member)
Alexey Zayak (Committee Member)
112 p.
Inorganic Chemistry; Physical Chemistry; Physics
quantum dots; optoelectronic; devices; nanocrystals; inorganic semiconductors

Recommended Citations

Citations

  • Royo Romero, L. (2019). Optoelectronic Characteristics of Inorganic Nanocrystals and Their Solids [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555422820907262

    APA Style (7th edition)

  • Royo Romero, Luis. Optoelectronic Characteristics of Inorganic Nanocrystals and Their Solids. 2019. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555422820907262.

    MLA Style (8th edition)

  • Royo Romero, Luis. "Optoelectronic Characteristics of Inorganic Nanocrystals and Their Solids." Master's thesis, Bowling Green State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555422820907262

    Chicago Manual of Style (17th edition)

bgsu1555422820907262
190
© 2019, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.