Internal quantum efficiency and tunable colour temperature in monolithic white InGaN/GaN LED

Ilya E. Titkov; Amit Yadav; Vera L Zerova; Modestas Zulonas; Andrey F. Tsatsulnikov; Wsevolod V. Lundin; Alexey V. Sakharov; Edik U. Rafailov

doi:10.1117/12.2040086

8 March 2014 Internal quantum efficiency and tunable colour temperature in monolithic white InGaN/GaN LED

Ilya E. Titkov, Amit Yadav, Vera L Zerova, Modestas Zulonas, Andrey F. Tsatsulnikov, Wsevolod V. Lundin, Alexey V. Sakharov, Edik U. Rafailov

Author Affiliations +

Proceedings Volume 8986, Gallium Nitride Materials and Devices IX; 89862A (2014) https://doi.org/10.1117/12.2040086
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

Internal Quantum Efficiency (IQE) of two-colour monolithic white light emitting diode (LED) was measured by temperature dependant electro-luminescence (TDEL) and analysed with modified rate equation based on ABC model. External, internal and injection efficiencies of blue and green quantum wells were analysed separately. Monolithic white LED contained one green InGaN QW and two blue QWs being separated by GaN barrier. This paper reports also the tunable behaviour of correlated colour temperature (CCT) in pulsed operation mode and effect of self-heating on device performance.

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Ilya E. Titkov, Amit Yadav, Vera L Zerova, Modestas Zulonas, Andrey F. Tsatsulnikov, Wsevolod V. Lundin, Alexey V. Sakharov, and Edik U. Rafailov "Internal quantum efficiency and tunable colour temperature in monolithic white InGaN/GaN LED", Proc. SPIE 8986, Gallium Nitride Materials and Devices IX, 89862A (8 March 2014); https://doi.org/10.1117/12.2040086

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