A High-Performance Tunable LED-Compatible Current Regulator Using an Integrated Voltage Nanosensor
| Autor: | Chunpeng Wang, Di Yang, Shengji Wang, Xinghuan Chen, Yuanzhe Yao, Zhenwei Zhang, Jun Cao, Zirui Wang, Zeheng Wang |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science business.industry Ripple Wide-bandgap semiconductor Gallium nitride 01 natural sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound Depletion region chemistry Nanosensor 0103 physical sciences Optoelectronics Electric potential Electrical and Electronic Engineering business Temperature coefficient Voltage |
| Zdroj: | IEEE Transactions on Electron Devices. 66:1917-1923 |
| ISSN: | 1557-9646 0018-9383 |
| DOI: | 10.1109/ted.2019.2899756 |
| Popis: | A class of novel tunable light-emission-diode (LED)-compatible current regulator, including the reverse blocking and the reverse conducting device, is proposed by integrating the p-GaN cap with a voltage nanosensor on the AlGaN/GaN platform. Verified by the experimentally calibrated simulation, it is the feedback of the voltage sensor that stabilizes the depletion region of the reverse biased p-GaN /AlGaN/2-DEG junction, which contributes to clamping the voltage effectively. Compared with the proposed regulator, the devices only with the p-GaN cap or the sensor cannot perform the current regulation. Moreover, investigated by varying the p-type concentration of the p-GaN, the length of the sensor as well as the temperature, the proposed device featuring a ripple wave below 4 mA/mm and a temperature coefficient of 4.5 mA $\cdot $ mm $^{-\textsf {1}}\text{K}^{-\textsf {1}}$ exhibits its potential in LED industry and other related applications. |
| Databáze: | OpenAIRE |
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