Evaluation of a Pulsed Ultraviolet Light-Emitting Diode for Triggering Photoconductive Semiconductor Switches

Autor:	James C. Dickens, Andreas A. Neuber, Daniel Mauch, Cameron Hettler, William Sullivan
Rok vydání:	2015
Předmět:	Nuclear and High Energy Physics Materials science business.industry Photoconductivity Energy conversion efficiency Pulsed power Electroluminescence Condensed Matter Physics Optical switch law.invention Optics law Ultraviolet light Optoelectronics business Diode Light-emitting diode
Zdroj:	IEEE Transactions on Plasma Science. 43:2182-2186
ISSN:	1939-9375 0093-3813
Popis:	The power output, forward voltage, conversion efficiency, and spectral characteristics of a 365 nm ultraviolet light-emitting diode (LED) were measured for applications of triggering wide-bandgap photoconductive switches for pulsed power applications. Pulsed currents through the LED ranged from 125 mA up to 2.2 A at widths from 10 $\mu \text{s}$ up to several seconds. Using time-resolved electroluminescence spectroscopy, peak emission was observed to occur at 368.5 nm for short pulses with a red-shift to 371.8 nm for pulses 8 s in duration. A peak light output of 4.1 W was measured for short pulses ( $ ) of 2.12 A, corresponding to six times the rated output specification. The LED was used to trigger a high-voltage photoconductive semiconductor switch (PCSS) at voltages up to 6 kV into a high-impedance load. The 365 nm LED is a promising candidate for optical triggering of PCSS devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d555f664a264302c14e41b11b3887deb https://doi.org/10.1109/tps.2015.2435744 Zobrazit plný text záznamu