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- W2539156799 abstract "Light emitting spatial inhomogeneity in InGaN/GaN multiple quantum well (MQW) blue and green LEDs were observed directly with a microscope. Electroluminescence (EL) spectra of InGaN/GaN QW blue and green LEDs were studied in the temperature range of 10-300 K at an injection current of 5 mA. Some anomalous behavior was observed. Intensity of the EL main peak increased monotonically with temperature from 10 to 200 K and slightly decreased with further temperature increase in the 200 K range. This is in contrast with the monotonic decrease of EL with increasing temperature for conventional AlGaInP QW red LEDs. The anomalous behavior can only be observed on InGaN/GaN systems. The origin of such behaviors was discussed using a model of quantum dot clusters in the InGaN/GaN pseudo-quantum wells, with a small potential barrier at the boundary of the quantum dots." @default.
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- W2539156799 date "2004-06-03" @default.
- W2539156799 modified "2023-09-27" @default.
- W2539156799 title "Comparison of temperature dependent electroluminescence of InGaN/GaN and AlGaInP based LEDs" @default.
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- W2539156799 doi "https://doi.org/10.1109/cos.2003.1278201" @default.
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