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- W2065568785 abstract "In this study low temperature and high pressure techniques have been used to investigate the recombination processes taking place in InGaN-based quantum well light emitting diodes (LEDs) which have emission across the blue-green region. Despite relatively high peak efficiencies of the GaN-based emitters, there remain issues relating to the strong efficiency reduction at higher currents that are required for normal operation in most applications. It is observed that there is a relative reduction in efficiency as injection current is increased in a phenonmenon which is known as efficiency droop. There are three main arguments for the cause of efficiency droop that are discussed in the literature: non-radiative Auger recombination, carrier leakage and a defect-related loss mechanism. In spite of extensive research to date, there is little agreement on the cause of efficiency droop as most experiments can only measure the overall efficiency behaviour leading to difficulties in determining the individual contributions from the different loss mechanisms." @default.
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- W2065568785 date "2013-05-01" @default.
- W2065568785 modified "2023-09-22" @default.
- W2065568785 title "Investigating the efficiency limitations of GaN-based emitters" @default.
- W2065568785 doi "https://doi.org/10.1109/cleoe-iqec.2013.6801007" @default.
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