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Results and Discussion

Results and Discussion. should be attributed to elongated Shockley–Read–Hall nonradiative lifetime in LED A2. 9%. at 0.5mW A2>A1 40%.

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Results and Discussion

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  1. Results and Discussion should be attributed to elongated Shockley–Read–Hall nonradiative lifetime in LED A2. 9% at 0.5mW A2>A1 40% FIG. 1. (a) Relative external quantum efficiency (EQE) as a function of forward current for LEDs A1 (H 2 -free and 2 nm GaN cap), A2 (H 2 /N 2 and 2 nm GaN cap), and A3 (H 2 /N 2 and 3 nm GaN cap); (b) excitation power depend- ent PL for LED A1 and A2.

  2. B0 B1 B2 B3 B3 ： 2.6mA EQE： B1 vs. B0 ：at 5mA, B1>B0 15% B2 vs. B0 ：at 16mA, B2>B0 16% FIG. 2. Current dependent relative EQE and LOP for LEDs with different capping layers.

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