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GaAs diodes for TiT2-based betavoltaic cells
M V Dorokhin1, O V Vikhrova1, P B Demina1
1Research Institute for Physics and Technology, Lobachevsky State University of Nizhni Novgorod, 603950, Nizhni Novgorod, Russia.
Abstract:
The GaAs semiconductor structures for the application as betavoltaic power sources were investigated. Three types of structures underwent a comparative study: a Schottky diode, a p-n junction and Schottky structure modified by deposition of a carbon layer. The power characteristics were estimated by Monte-Carlo simulation and collected current calculation using parameters obtained from the electron beam induced current technique. It was shown that carbon deposition on the top of n-GaAs allows passivating the surface states and thus improving betavoltaic performance.
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