LIGHT CONTROLLED ELECTRIC OSCILLATIONS GENERATOR ON THE CADMIUM SULFIDE HOMOGENEOUS CRYSTALS Russian patent published in 2018 - IPC H01L31/09 

FIELD: electrical equipment.

SUBSTANCE: invention relates to the optoelectronic devices. Light-controlled electric oscillations generator on the homogeneous CdS crystal consists of metal housing, a CdS single crystal glued on the insulating substrate, which in turn is glued in the housing bottom center, and transparent to visible light window, from electrical terminals located near the semiconductor end faces. This device uses CdS single crystal, which photoelectric properties are expressed by current instability when illuminated by light in the impurity transitions region with pulling field from 200 V/cm to 1,000 V/cm. Use of such CdS single crystal samples will allow to realize the effect of infra-low frequencies oscillations generation in the photoresistors. Invention provides the possibility of oscillations generator on homogeneous crystals (CdS) creating using the operation principle, which consists in the photo-resistance creating based on the CdS homogeneous crystal, which resistance changes in time in a sinusoidal or sawtooth manner or in the form of “beats”, described as the two sinusoids with different frequency superimposition. At that, the semiconductor photosensitivity spectral range is a narrow wavelengths range of 510–520 nm, and the flowing through the semiconductor currents range from 10^-9–10^-4 A.

EFFECT: invention can be used as the generator of sinusoidal, sawtooth and complex (sum of several sinusoids) oscillations forms based on the light controlled homogeneous CdS crystal.

1 cl, 2 dwg