A new method for calculating the precise electrical characteristics of quantum dot micro-LED

Keming Ma; Zixian Wei; Shi Zhang; Zhiyuan Cao; Lei Wang; Chien-Ju Chen; Meng-Chyi Wu; H. Y. Fu; Yi Luo; Lai Wang; Yuhan Dong

doi:10.1117/12.2585520

4 December 2020 A new method for calculating the precise electrical characteristics of quantum dot micro-LED

Keming Ma, Zixian Wei, Shi Zhang, Zhiyuan Cao, Lei Wang, Chien-Ju Chen, Meng-Chyi Wu, H. Y. Fu, Yi Luo, Lai Wang, Yuhan Dong

Author Affiliations +

Proceedings Volume 11617, International Conference on Optoelectronic and Microelectronic Technology and Application; 116173S (2020) https://doi.org/10.1117/12.2585520
Event: International Conference on Optoelectronic and Microelectronic Technology and Application, 2020, Nanjing, China

Abstract

In this paper, we have fabricated and packaged a blue micro-LED with a diameter of 50-μm based on a single layer of InGaN QD micro-LED and present a new method to calculate the junction capacitance of micro-LEDs under forward voltage using the forward AC small-signal method. The results confirm that QD micro-LEDs, like commercial LEDs, show obvious negative capacitances at low frequencies and large voltages. The values of negative capacitance at high frequency and low voltage are so small and can be ignored, or there is no negative capacitance. We have also concluded the empirical expressions for negative capacitance, voltage, and frequency.

Citation Download Citation

Keming Ma, Zixian Wei, Shi Zhang, Zhiyuan Cao, Lei Wang, Chien-Ju Chen, Meng-Chyi Wu, H. Y. Fu, Yi Luo, Lai Wang, and Yuhan Dong "A new method for calculating the precise electrical characteristics of quantum dot micro-LED", Proc. SPIE 11617, International Conference on Optoelectronic and Microelectronic Technology and Application, 116173S (4 December 2020); https://doi.org/10.1117/12.2585520

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