Low-Temperature-Grown Gallium Arsenide Photoconductors with subpicosecond carrier lifetime and photoresponse reaching 25 mA/W under 1550nm CW excitation
2020
The authors show in this Letter that photoconductors based on GaAs grown at low temperatures can exhibit photoresponses as high as 25 mA/W under continuous-wave 1550-nm-wavelength illumination. It is achieved by using an optical Fabry–Perot cavity in order to improve the external quantum efficiency and by decreasing the post-growth annealing temperature down-to 450°C.
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