Preparation and Properties of Zinc Oxide Nanoparticles for Heterojunction Use
Document Type
Event
Department
Environmental Science and Policy
Abstract
ZnO and doped variant wide bandgap oxide semiconductors are widely applied and have useful properties as active window layers in heterojunction, photovoltaic, and photoconductive structures. They are considered among other transparent and electrically conducting films as having the potential for high conductivity, low optical absorption, and low frequency and power sensitivities while allowing for high absorption near the ultraviolet range. This behavior is a result of their wide band gap, often ranging between 3.3 and 4 eV. Application, or growth, of ZnO thin films is possible on both p- and n-type silicon at low temperatures by applying synthesized oxide nanoparticles to heated SI wafers via spray pyrolysis to create a heterojunction structure. The optical and electronic properties of the synthesized oxide nanoparticles and thin film applications including absorbance, fluorescence, conductivity, and resistivity as well as nanoparticle size, shape, and density were measured to characterize the potential performance of nanoparticle-based oxide semiconductor heterojunctions for use in optoelectronics. Results, conclusions, and further work are discussed.
Preparation and Properties of Zinc Oxide Nanoparticles for Heterojunction Use
ZnO and doped variant wide bandgap oxide semiconductors are widely applied and have useful properties as active window layers in heterojunction, photovoltaic, and photoconductive structures. They are considered among other transparent and electrically conducting films as having the potential for high conductivity, low optical absorption, and low frequency and power sensitivities while allowing for high absorption near the ultraviolet range. This behavior is a result of their wide band gap, often ranging between 3.3 and 4 eV. Application, or growth, of ZnO thin films is possible on both p- and n-type silicon at low temperatures by applying synthesized oxide nanoparticles to heated SI wafers via spray pyrolysis to create a heterojunction structure. The optical and electronic properties of the synthesized oxide nanoparticles and thin film applications including absorbance, fluorescence, conductivity, and resistivity as well as nanoparticle size, shape, and density were measured to characterize the potential performance of nanoparticle-based oxide semiconductor heterojunctions for use in optoelectronics. Results, conclusions, and further work are discussed.
