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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2018 Volume 44, Issue 21, Pages 105–110 (Mi pjtf5658)

Thermal characteristics of high-efficiency photovoltaic converters of high-power laser light

V. M. Andreeva, N. Yu. Davidukb, D. A. Malevskiia, P. V. Pokrovskiia, N. A. Sadchikova, A. V. Chekalina, A. V. Andreevaa

a Ioffe Institute, St. Petersburg
b Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, St. Petersburg

Abstract: The influence exerted by the heat removal conditions on the extent of overheating of photovoltaic converters of high-power ($>$10$^3$ W/cm$^2$) laser light has been studied. The temperature of the $p$$n$ junction of photovoltaic cells was measured by recording the instantaneous values of the open-circuit voltage generated by laser light. The effect of cooling in high-efficiency photovoltaic cells (efficiency = 55%) via removal of a substantial part of absorbed optical power by the photocurrent into the external load was demonstrated. It was shown that, at laser radiation power of 2.5 W, the overheating of a photocell with an area of 1.7 $\times$ 10$^{-3}$ cm$^2$ relative to the copper heatsink temperature is 48$^{\circ}$C in the no-load conditions and 30$^{\circ}$C in operation with the optimal load.

Received: 04.07.2018

DOI: 10.21883/PJTF.2018.21.46862.17451


 English version:
Technical Physics Letters, 2018, 44:11, 999–1001

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