Enhancement Of Efficiency Of GaN-on-GaN LED By Wet Etching Roughening On N-Face Gan Substrate

• Main Authors: Alias, Ezzah A., Samsudin, Muhammad Esmed Alif, Denbaars, Steven P., Speck, James S., Nakamura, Shuji, Zainal, Norzaini
• Format: Conference or Workshop Item
• Language: English
• Published: 2020
• Subjects: QC1-999 Physics
• Online Access: http://eprints.usm.my/49096/1/ABSTRACT%20BOOK%20MNRG%202020.pdf%20cut%2076.pdf; http://eprints.usm.my/49096/
• Institution: Universiti Sains Malaysia

It is well-known that GaN-on-GaN LEDs have lower dislocation density compared to GaN-on-sapphire LEDs. Nonetheless, the overall efficiency of the GaN-on-GaN LEDs is still lower than the GaN-on-sapphire LEDs. The problem is associated to total internal reflection effect which is higher in the LEDs....