Question
Download Solution PDFArrange the following in ascending order of their bandgap (at ‐300K)
A. GaN
B. GaP
C. GaAs
D. Si
Choose the correct answer from the options given below
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFAnalysis:
The bandgap energy (Eg) in the minimum energy required to break a covalent bond and thus, generates an electron-hole pair.
The energy gap is the shortest distance between the valence layer and the conduction layer.
The Energy required for a photon to create an e-h pair is a little bit larger than band-gap in the case of indirect band-gap semiconductor
Comparison of different semiconductor bandgaps is as shown:
|
Semiconductor Materials |
||
|
Material |
Chemical Symbol |
Bandgap Energy (eV) 300K |
|
Germanium |
Ge |
0.66 |
|
Silicon |
Si |
1.1 |
|
Gallium Arsenide |
GaAs |
1.4 |
|
Gallium Nitride |
GaN |
3.4 |
|
Gallium Phosphide |
GaP |
2.25 |
Last updated on Jun 12, 2025
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