photoelectric cell, an electron tube with a photosensitive cathode that emits electrons when illuminated and an anode for collecting the emitted electrons. Various cathode materials are sensitive to specific spectral regions, such as ultraviolet, infrared, or visible light.

It is a form of photoelectric cell, a device whose electrical characteristics (such as current, voltage, or resistance) vary when it is exposed to light. Individual solar cell devices are often the electrical building blocks of photovoltaic modules, known colloquially as "solar panels".

The photoelectric effect is the emission of electrons from a material caused by electromagnetic radiation such as ultraviolet light. Electrons emitted in this manner are called photoelectrons.

2018年10月1日 · Photoelectric cell is the device which converts light energy into electrical energy. Depending upon the different photoelectric effects employed, the photoelectric cells are of following 3 types.

2023年3月6日 · Artwork: A summary of the three types of photoelectric cells. 1) Photoconductive—light increases the flow of electrons and reduces the resistance. 2) Photovoltaic—light makes electrons move between layers, producing a voltage and a current in an external circuit.

2018年5月23日 · A photoelectric cell, also called sometimes a phototube, electron tube, or electric eye, is an electronic device that is sensitive to incident radiation, especially visible light, which is used to generate or control an output of electric current.

2023年9月19日 · The photoelectric effect refers to the phenomenon where light, typically in the form of photons, can cause the emission of electrons from a material’s surface. In simple terms, when light shines on a material, it can transfer its energy to electrons within the material.

2023年11月17日 · A photoelectric cell is a remarkable device used to accurately measure the intensity of light. It operates by efficiently converting incident or reaching light into an electric current, which can then be precisely measured.

2021年9月1日 · Photocell is also called an electron tube, photoelectric cell, electric eye, and phototube. This is an electronic instrument that is very vulnerable to incident radiation mainly light that is utilized for the generation or regulating the output levels of electric current.

Photoelectric cells are devices that generate a photoelectric current when light falls on their surface, allowing for the direct measurement of illumination. They include three types: photoemissive cells, photovoltaic cells, and photoconductive cells, each functioning based on different principles to measure light intensity.