Photoconductivity is the increased electrical conductivity of a material in response to light. The effect is created by the absorption of photons, which creates free electrons and holes in the material. The free carriers increase the material's conductivity.
What is the photoconductive effect?
The photoconductive effect is the increase in conductivity of a material when it is exposed to light. This effect is used in photoconductive cells, which are used to detect light or to create electrical signals from light.
The photoconductive effect is caused by the absorption of photons by the material, which creates electron-hole pairs. The more photons that are absorbed, the more electron-hole pairs are created, and the more conductive the material becomes.
The photoconductive effect is used in a variety of devices, including photoconductive cells, photodiodes, and solar cells. What is photoconductor and example? A photoconductor is a semiconductor that is sensitive to light. When exposed to light, the photoconductor becomes electrically conductive. The most common photoconductors are made of selenium or silicon. Why is photoconductivity important? Photoconductivity is important for a number of reasons. First, it allows for the detection of light. This is because when light hits a photoconductive material, it causes an increase in electrical conductivity. This increase can be detected and used to measure the intensity of the light. Additionally, photoconductivity can be used to create images. This is because different intensities of light will cause different amounts of conductivity, which can be used to create an image.
What are the applications of photoconductivity?
Photoconductivity is the ability of a material to conduct electricity when exposed to light. This effect is used in a variety of applications, including:
-Photodetectors: Photodetectors convert light into an electrical signal, which can be used to detect the presence of light or to measure the intensity of light.
-Solar cells: Solar cells convert sunlight into electrical energy, which can be used to power electrical devices.
-Photocopiers: Photocopiers use photoconductive materials to create copies of documents.
-Security systems: Security systems use photoconductive materials to detect the presence of intruders. What is the difference between photovoltaic and photoconductive? Photovoltaic cells are made of materials that directly convert sunlight into electricity, while photoconductive cells are made of materials that indirectly convert sunlight into electricity.