International Conference Physics.SPb/2024, October 21-25, 2024, St. Petersburg

The problem of nonuniqueness of the laser radiation conversion into electric current in multijunction monolithic photoconverters

I. A. Tolkachov, V. S. Yuferev

Ioffe Institute, 194021 St. Ptersburg, Russia

Abstract: We study the multiplicity of solutions for a monolithic two-junction photoconverter of laser radiation, the structure of which has a window and a rear barrier, as well as traps in a tunnel diode (TD). The existence of two solutions is shown, one of which corresponds to the tunnel branch of the current-voltage characteristic of the TD, and the second to the diffuse branch. It is also shown that in the presence of traps, the transfer of charge carriers through the TD barrier occurs through tunneling in both solutions. Moreover, in the second solution, tunneling occurs even in the mode of the open-circuit voltage, when charge carriers move in one direction. A method for implementing the second solution in practice is proposed.

Keywords: photovoltaics, laser radiation, multi-junction photoconverter, tunnel diod, traps.

Received: 27.04.2024
Revised: 24.07.2024
Accepted: 30.10.2024

DOI: 10.61011/FTP.2024.10.59382.6453A

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