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- W2600148679 abstract "Internal quantum efficiency (IQE) is usually estimated from temperature dependence of photoluminescence (PL) intensity by assuming that the IQE at cryogenic temperature is unity. III-nitride samples, however, usually have large defect-density, and the assumption is not necessarily valid. In this study, we developed a new method to estimate accurate IQE values by simultaneous PL and photo-acoustic (PA) measurements, and demonstratively evaluated the IQE values for various GaN samples. The results show that the conventional method cannot give accurate IQE values for low-quality samples although it can be valid for high-quality samples, and that our method can always give accurate values." @default.
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- W2600148679 date "2015-11-19" @default.
- W2600148679 modified "2023-09-26" @default.
- W2600148679 title "Determination of internal quantum efficiency in GaN by simultaneous measurements of photoluminescence and photo-acoustic signals" @default.
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