Characteristics of Micro LEDs With Snowflake p-Electrode and Composite Textured Sidewalls
We demonstrate a hybrid structure incorporating concave-convex circular composite textured sidewalls and snowflake-like p-electrode, which is an effective approach to improve optical properties without deteriorating the electrical characteristics for micro-LEDs. Compared to the device with flat side...
Saved in:
Published in | IEEE photonics technology letters Vol. 31; no. 21; pp. 1705 - 1708 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
New York
IEEE
01.11.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | We demonstrate a hybrid structure incorporating concave-convex circular composite textured sidewalls and snowflake-like p-electrode, which is an effective approach to improve optical properties without deteriorating the electrical characteristics for micro-LEDs. Compared to the device with flat sidewalls and disk p-electrode, the device with concave-convex circular composite textured sidewalls and 6-branches snowflake-like p-electrode exhibits a saturation light output power enhancement of 36.85%. And the forward voltage decreases by 7.6% at current density of 1732.4 A/cm 2 . The enhanced performances are mainly attributed to the decrease of total internal reflection at the concave-convex circular composite textured sidewalls and improvement of current distribution provided by 6-branches snowflake-like p-electrode. |
---|---|
ISSN: | 1041-1135 1941-0174 |
DOI: | 10.1109/LPT.2019.2942690 |