中国物理B ›› 2010, Vol. 19 ›› Issue (9): 97305-097305.doi: 10.1088/1674-1056/19/9/097305
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
李春伟, 朱彦旭, 沈光地, 张勇辉, 秦园, 高伟, 蒋文静, 邹德恕
Li Chun-Wei(李春伟)† , Zhu Yan-Xu(朱彦旭), Shen Guang-Di(沈光地), Zhang Yong-Hui(张勇辉), Qin Yuan(秦园), Gao Wei(高伟), Jiang Wen-Jing(蒋文静), and Zhou De-Shu(邹德恕)
摘要: In this paper AlGaInP light emitting diodes with different types of electrodes: Au/Zn/Au-ITO Au/Ti-ITO Au/Ge/Ni-ITO and Au-ITO are fabricated. The photoelectricity properties of those LEDs are studied. The results show that the Au/Zn/Au electrode greatly improves the performance of LEDs compared with the other electrodes. Because the Au/Zn/Au electrode not only forms a good Ohmic contact with indium tin oxide (ITO), but also reduces the specific contact resistances between ITO and GaP, which are 1.273×10-6 Ω · cm2 and 1.743×10-3 Ω ·cm2 between Au/Zn/Au-ITO and ITO-GaP respectively. Furthermore, the textured Zn/Au-ITO/Zn electrode is designed to improve the performances of LEDs, reduce the forward-voltage of the LED from 1.93 to 1.88 V, and increase the luminous intensity of the LEDs from 126 to 134 mcd when driven at 20 mA.
中图分类号: