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Optimization scheme for the quantum efficiency of GaInN-based green-light-emitting diodes
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10.1063/1.2173619
/content/aip/journal/apl/88/7/10.1063/1.2173619
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/7/10.1063/1.2173619
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) QW width and oscillator strength for LEDs emitting at and , respectively. For a longer emission wavelength, smaller QWs but higher In content are required for sufficient oscillator strength.

Image of FIG. 2.
FIG. 2.

(Color online) Temperature dependent IQE at different excitaion power levels for a SQW emitting at . The curve as fitted using an Arrhenius model. Inset: Room-temperature PL spectra measured from edge to avoid Fabry–Perot interferences.

Image of FIG. 3.
FIG. 3.

(Color online) Room-temperature IQE vs emission wavelength. Samples with thinner QWs show higher values of IQE for the whole blue to green spectral region.

Image of FIG. 4.
FIG. 4.

(Color online) Current dependence of the EQE for blue and green LED structures. For green LEDs, the EQE is still lower compared to the blue LED, but there is no significant drop in EQE toward higher drive currents.

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/content/aip/journal/apl/88/7/10.1063/1.2173619
2006-02-13
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optimization scheme for the quantum efficiency of GaInN-based green-light-emitting diodes
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/7/10.1063/1.2173619
10.1063/1.2173619
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