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Questions and Answers
What is photoconductivity?
What is photoconductivity?
- An optical and electrical phenomenon in which a material becomes less electrically conductive due to the absorption of electromagnetic radiation
- A thermal and electrical phenomenon in which a material becomes less electrically conductive due to the absorption of electromagnetic radiation
- A mechanical and electrical phenomenon in which a material becomes more electrically conductive due to the emission of electromagnetic radiation
- An optical and electrical phenomenon in which a material becomes more electrically conductive due to the absorption of electromagnetic radiation (correct)
What happens during the internal photo effect?
What happens during the internal photo effect?
- The energy absorbed enables the transition of activator electrons into the conduction band and the charge exchange of traps with holes being created in the valence band (correct)
- The energy absorbed causes the material to become more insulating
- The energy absorbed creates more traps in the valence band
- The energy absorbed disables the transition of activator electrons into the conduction band and the charge exchange of traps with holes being created in the valence band
What type of radiation can cause photoconductivity?
What type of radiation can cause photoconductivity?
- Visible light, ultraviolet light, infrared light, and gamma radiations (correct)
- Gamma radiations, X-rays, visible light, and radio waves
- Infrared light, ultraviolet light, radio waves, and microwaves
- X-rays, radio waves, microwave, and ultraviolet light
How does light absorption affect the electrical conductivity of a semiconductor?
How does light absorption affect the electrical conductivity of a semiconductor?
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What leads to the enhancement of conductivity in photoconductivity?
What leads to the enhancement of conductivity in photoconductivity?
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