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The light dependent resistor (LDR) made of cadmium sulfide (CdS), whose resistance is directly proportional to the amount of light that hits it, is also known as the photo resistor, photoresistor, photoconductor, photoconductive cell, or simply the photocell.
An active semiconductor layer is deposited on an insulating substrate in a typical photoresistor structure. To give the semiconductor the necessary conductivity, it is typically lightly doped.
After that, the exposed area is flanked by contacts. As a low-cost photosensitive element, the photo-resistor, also known as CdS or LDR, is utilized in numerous applications, including card readers, lighting controls for street lamps, smoke, flame, and burglar alarms, and photographic light meters.
The Global CdS photoresistor market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
Cadmium Sulfide (CdS) Light-Dependent Resistors (LDRs) are now available from Advanced Photonix, a division of OSI Optoelectronics. These LDRs are made to detect light between 400 nm and 700 nm.
The efficiency of the human eye is represented by the fact that the resistance of the photoconductive devices decreases with increasing light levels. There are a variety of resistance values and packaging options for the photoresistors, also known as photocells.
Cds photoresistors are great for road and sunlight based lighting, sound pressure and fire identification, camera light meters, and openness and shade controls applications. They can also be used to control night lights, alarm clocks, outdoor clocks, and clock radios.
