Question

Which among the following are used as semiconductor materials to fabricate solar cells

A. Silicon (Si)

B. Tin oxide (SnO)

C. Cadmium Sulphur (CdS)

D. Gallium Arsenide (GaAs)

Choose the correct answer from the options given below:

1. A and C only
2. A and B only
3. B, C and D only
4. A, B, C and D

Answer 1

Correct Answer - Option 4 : A, B, C and D

Semiconductor:

• Semiconductor are small bandgap insulators
• The most commonly used semiconductor materials are crystalline inorganic solids
• Different semiconductor materials have different properties.

Semiconductor materials	Description
Silicon (Si)	In group VI semiconductor only Silicon is used Used in conventional crystalline silicon solar cell Commonly used in the fabrication of integrated circuits Common semiconductor material in photovoltaics  Bandgap 1.12eV and indirect
Tin oxide (SnO)	It is a semiconductor of the Oxide group. The original compound is Tin Dioxide (SnO2). It is an Oxygen deficient n-type semiconductor. Generally used in gas sensors. Bandgap 3.7eV
Cadmium Sulphur (CdS)	In Groop II-VI semiconductor  Commonly used in photoresistors and solar cells Used in a solar cell with CdTe. Common as quantum dots. Bandgap 2.42eV, and direct
Gallium Arsenide (GaAs)	In Groop III-V semiconductor the most common material is Gallium Arsenide (GaAs) Commonly used as a substrate of other semiconductors like GalnNas, InGaAs Used for high-efficiency solar cells, fast electronics, near-IR LEDs Bandgap 1.43eV, and direct

 

So, all the options are correct.