Electrically driven green, olivine, and amber color nanopyramid light emitting diodes

• DOI: 10.1364/oe.21.023030
• Publication Date: 2013-09-24T03:55:59Z
• Authors: Shih-Pang Chang; Jet-Rung Chang; Kuok-Pan Sou; Mei-Chun Liu; Yuh-Jen Cheng; Hao-Chung Kuo; Chun-Yen Chang
• Keywords: Quantum Efficiency

We report the fabrication and studies of electrically driven green, olivine, amber color nanopyramid GaN light emitting diodes (LEDs). InGaN/GaN multiple quantum wells (MQWs) were grown on semipolar facets. Compared with commonly used (0001) c-plane MQWs, facet has lower piezoelectric field, resulting in much faster radiative recombination efficiency. This is important for high In content MQWs. The measured internal efficiencies LED are 30%, 25%, 21%, respectively. non-radiative lifetime MQWs also investigated.