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- W3135595047 abstract "Electroluminescence, photoluminescence and photocurrent spectra of structures with In{sub 0.2}Ga{sub 0.8}N/GaN quantum wells are studied to understand the origin of the decrease of quantum efficiency with increasing forward current. It is shown that the quantum efficiency decreases when the emission photon energy approaches to the mobility edge in InGaN layer. The mobility edge is estimated from photocurrent spectra as E=2.89 eV. At energies h{nu} > 2.69 eV charge carries have the higher probability of tunneling to nonradiative recombination centers, therefore, the carrier lifetime and quantum efficiency decrease. The tunnel injection in deep localized states provides the maximum of InGaN/GaN light emitting diodes usually observed at significantly lower current density than operating ones." @default.
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- W3135595047 date "2007-01-15" @default.
- W3135595047 modified "2023-09-23" @default.
- W3135595047 title "Quantum efficiency and emission line shaping in light-emitting structures with InGaN/GaN quantum wells; Kvantovaya ehffektivnost' i formirovanie linii izlucheniya v svetodiodnykh strukturakh s kvantovymi yamami InGaN/GaN" @default.
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