0100496643

open access

Version of Record

Impact of high-density photocarrier generation on the conversion efficiency of a photodiode used as a laser power converter

English (英語)

Japanese Journal of Applied Physics

64(7)

074001

IOP Publishing

2025-07-01

2025-07-07

We studied the photovoltaic properties of an InGaAs photodiode from the viewpoint of application as a laser power converter. The short-circuit current increased linearly with the excitation power density, but the open-circuit voltage was significantly influenced by carrier scattering when the excitation power density exceeded a critical excitation power density of 200 mW cm⁻². We found that the external luminescence efficiency, which is directly related to the open-circuit voltage, starts to decrease above 200 mW cm⁻² due to an increase in the non-radiative recombination rate. This mechanism including its effect on the fill factor determines the value of the optimum excitation power density for this device.

学術雑誌論文

Content from this work may be used under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.