A photoconductor or Photoconductivity is an electrical & optical phenomenon where a material turns into conductive more electrically because of the electromagnetic radiation absorption like infrared light, ultraviolet light, visible light, or gamma radiation.

Photoconductivity ensues when the material is bombarded with photons of sufficient energy to raise electrons across the band gap, a forbidden region between the valence and conduction bands.

Radiant energy supplied to the semiconductor causes covalent bonds to the broken, and EHPs in excess of those generated thermally are produced. These increased current carriers reduce the resistance of the material and, therefore, such a device is called a …

Photoconductors are conducting elements whose conductance is controlled by incident infrared or visible radiation, producing holes, electrons, or hole-electron pairs that cause current flow when a voltage is applied. You might find these chapters and articles relevant to this topic.

Depicted in Figure 1 is a junction photodiode model with basic discrete components to help visualize the main characteristics and gain a better understanding of the operation of Thorlabs' photodiodes. Figure 1: Photodiode Model. A photodiode can be operated in one of two modes: photoconductive (reverse bias) or photovoltaic (zero-bias).

2022年7月30日 · The material which can conduct the electricity within them are called conductors, and the material whose conductivity increases as soon as the light falls on it, that material is called a photoconductor.

2024年9月20日 · Photoconductivity is a phenomenon where a material becomes more electrically conductive when it absorbs light, such as infrared, ultraviolet, visible light, or gamma radiation. When light hits a semiconductor material, it increases the number of charge carriers, boosting its electrical conductivity.

2009年7月16日 · A photoconductor is a material in which electrical conductivity changes when it is illuminated — invariably increasing in response to impinging light.

The photoconductivity is an optical/electrical phenomenon in which a material becomes more electrically conductive due to the absorption of electromagnetic radiation (such as visible light, ultraviolet light, infrared light, or gamma radiation). You might find these chapters and articles relevant to this topic.

Photoconductivity experiments have been extensively used by numerous researchers to characterize semiconductor materials. The tutorial will address some typical photoconductivity experiments such as ac photoconductivity and time-of …