Optical control variable capacitor
A technology of capacitors and photosensitive capacitors, which is applied in the field of capacitors and can solve the problems of insignificant semiconductor/insulator photocapacitance effects, etc.
Inactive Publication Date: 2015-11-11
HENAN UNIV OF SCI & TECH
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Problems solved by technology
Under normal conditions, the photocapacitance effect of most semiconductors / insulators is not significant
Method used
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Embodiment Construction
[0020] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] A light-controlled variable capacitor includes a control part and a light-sensitive capacitor. The photosensitive capacitor has a dielectric material layer 211, and the dielectric material layer adopts a photosensitive material with a small polaron effect (for example, a polycrystalline small polaron oxide material with a grinding purity of 99.9% rutile phase titanium dioxide, barium titanate, titanium strontium acid, etc.) made. Both sides of the dielectric material layer 211 are sequentially provided with a conductive layer and an encapsulation layer, and the conductive layer is closely attached to the dielectric material layer for connecting electrodes and external circuits. The encapsulation layer is used to protect the conductive layer and dielectric material layer therein, and play a role of support and fixation. In order to enable the d...
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The invention relates to an optical control variable capacitor. The optical control variable capacitor comprises a control part and a photosensitive capacitor; the control part is provided with an LED (Light Emitting Diode) light source, a power supply and a variable resistor, wherein the power supply is used for supplying power to the LED light source; the variable resistor is connected in a power supply circuit; the photosensitive capacitor is provided with a dielectric material layer; the dielectric material layer is made of a photosensitive material having a small polaron effect; a conducting layer and a packaged layer are sequentially arranged at two sides of the dielectric material layer; the conducting layer and the packaged layer at one side or two sides of the dielectric material layer are made of a light transmission material, so that light emitted by the LED light source can irradiate the dielectric material layer through the conducting layer and the packaged layer; and the light intensity of the LED light source is changed by adjusting the resistance value of the variable resistor, so that the dielectric constant of the dielectric material layer is changed. The capacitance of the capacitor can be adjusted through the intensity of irradiation light; and the capacitor can be used as a frequency modulation part of various kinds of electronic devices or can be used for manufacturing a photoelectric detector.
Description
technical field [0001] The invention relates to a capacitor, in particular to a light-controlled variable capacitor whose capacitance can be changed. Background technique [0002] Photoelectric technology has been widely used in national economy, military security, scientific research and other fields. The physical basis of optoelectronic technology is various photoelectric effects. Generally, the photoelectric effect is divided into the outer photoelectric effect and the inner photoelectric effect. The external photoelectric effect refers to the phenomenon that electrons in metals or semiconductors escape from the surface and emit outwards under the irradiation of light. It is mainly used in photoelectric tubes and photomultiplier tubes. The internal photoelectric effect refers to the electrical effect caused by the generation of electron-hole pairs inside the semiconductor under the irradiation of light. The internal photoelectric effect is more complicated, and the com...
Claims
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IPC IPC(8): H01G7/00
Inventor 李国岭王志晓周锋子李立本臧国忠
Owner HENAN UNIV OF SCI & TECH