Prediction of betavoltaic battery output parameters based on SEM measurements and Monte Carlo simulation
1Institute of Microelectronics Technology RAS, 142432, Chernogolovka, Russia; National University of Science and Technology MISiS, Moscow, Russia.
Abstract:
An approach for a prediction of (63)Ni-based betavoltaic battery output parameters is described. It consists of multilayer Monte Carlo simulation to obtain the depth dependence of excess carrier generation rate inside the semiconductor converter, a determination of collection probability based on the electron beam induced current measurements, a calculation of current induced in the semiconductor converter by beta-radiation, and SEM measurements of output parameters using the calculated induced current value. Such approach allows to predict the betavoltaic battery parameters and optimize the converter design for any real semiconductor structure and any thickness and specific activity of beta-radiation source.
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