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Journal articles
Mechanisms of enhanced light emission in GaN-based light-emitting diodes by V-shaped micropits
Abstract : We have investigated the light emission mechanisms of V-shaped, hexagonal-micropit-arranged, InGaN/GaN light-emitting diodes (HMA-LEDs). By near-field scanning optical microscopy and the confocal scanning electroluminescence microscopy, we found that enhanced light output of HMA-LED was significantly contributed by not only improved light-extraction efficiency but also locally improved crystalline quality near the micropit. Etch pit density and cross-sectional transmission electron microscope image indicate that threading dislocation (TD) bending lead to decrease the TD density near the micropit. Furthermore, partially linearly polarized light from the inclined facets of the HMA-LEDs was observed.
https://hal-utt.archives-ouvertes.fr/hal-02382637
Contributor : Daniel Gavrysiak Connect in order to contact the contributor
Submitted on : Wednesday, November 27, 2019 - 11:48:27 AM
Last modification on : Wednesday, September 15, 2021 - 3:03:32 PM
Contributor : Daniel Gavrysiak Connect in order to contact the contributor
Submitted on : Wednesday, November 27, 2019 - 11:48:27 AM
Last modification on : Wednesday, September 15, 2021 - 3:03:32 PM
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