Excitation of cylindrical microdischarges, 300-360 μm in diameter, by a reverse-biased, Si pn junction has been demonstrated. Devices fabricated from commercial diodes have been operated with Ne gas pressures in the 200-700 Torr range and dc voltages as low as 120 V. For a Ne gas pressure of 700 Torr, the wavelength-integrated (300-800 nm) output power - emitted into a solid angle of ∼6 X 10-2 sr - of a 360-μm-diam device is 48± 1 μW for an operating current and voltage of 5.7±0.1 mA and 134 V, respectively. This hybrid solid state/gas device represents the demonstration of the generation of a gas discharge by a pn junction and lends itself to the fabrication of large arrays.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)