Improvement of InGaN-GaN light-emitting diodes with surface-textured indium-tin-oxide transparent ohmic contacts.

Autor: Shyi-Ming Pan, Ru-Chin Tu, Yu-Mei Fan, R.-C. Yeh, Jung-Tsung Hsu
Zdroj: IEEE Photonics Technology Letters; May2003, Vol. 15 Issue 5, p649-651, 3p
Abstrakt: Presents a surface-textured indium-tin-oxide (ITO) transparent ohmic contact layer on p-GaN to increase the optical output of nitride-based light-emitting diodes (LED) without destroying the p-GaN. The surface-textured ITO layer was prepared by lithography and dry etching, and dimensions of the regular pattern were approximately 3 × 3 μm. The operating voltage of the surface-textured LED was almost the same as that of the typical planar LED since the ITO layer was in ohmic contact with the p-GaN. The experimental results indicate that the surface-textured ITO layer is suitable for fabricating high-brightness GaN-based light emitting devices. [ABSTRACT FROM PUBLISHER]
Databáze: Complementary Index