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- W2548842682 abstract "Evaluation of GaAs laser power converters (LPC) is reported in light of theoretical maximum limits calculated with detailed balance method as proposed by Shockley and Queisser (SQ). Calculations were done for three different theoretical structures of LPCs homogeneously illuminated by monochromatic light. Effects of LPC thickness, central wavelength of a monochromatic light source and various irradiance levels are discussed. Reflection of incident light from the interface between air and GaAs is calculated and countermeasures in the form of single and double layer anti reflection coatings are theoretically studied. Measurements of single junction, single segment GaAs LPC illuminated by monochromatic light with central wavelength ?0 = 808 nm are presented and compared with the theoretical maximum values. The conversion efficiency ?meas = 54,4 % was measured for GaAs LPC illuminated with power density of monochromatic light pillum = 14,3 W/cm2 at the temperature of the LPC casing T = 302 K. For the same parameters conversion efficiency ?SQ = 76,6 % was calculated resulting in utilization ratio ?meas/?SQ=0,71. Measured Jsc and Voc achieve 88,5 % and 89,2 % of theoretically calculated SQ limit values." @default.
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- W2548842682 date "2017-01-01" @default.
- W2548842682 modified "2023-09-25" @default.
- W2548842682 title "Comparison of measured performance and theoretical limits of gaas laser power converters under monochromatic light" @default.
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- W2548842682 doi "https://doi.org/10.2298/fuee1701093k" @default.
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