Tunnel-regenerated multiple-active-region light-emitting diodes with high efficiency

Guo, Xia; Shen, Guang-Di; Wang, Guo-Hong; Zhu, Wen-Jun; Du, Jin-Yu; Gao, Guo; Zou, De-Shu; Chen, Yong-Hai; Ma, Xiao-Yu; Chen, Liang-Hui
October 2001
Applied Physics Letters;10/29/2001, Vol. 79 Issue 18, p2985
Academic Journal
Tunnel-regenerated multiple-active-region (TRMAR) light-emitting diodes (LEDs) with high quantum efficiency and high brightness have been proposed and fabricated. We have proved experimentally that the efficiency of the electrical luminescence and the on-axis luminous intensity of such TRMAR LEDs scaled linearly approximately with the number of the active regions. The on-axis luminous intensity of such TRMAR LEDs with only 3 μm GaP current spreading layer have exceeded 5 cd at 20 mA dc operation under 15° package. The high-quantum-efficiency and high-brightness LEDs under the low injection level were realized. © 2001 American Institute of Physics.


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