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Semiconductors Band Gaps

Resume of the most used semiconductors band gaps

Native Semiconductors

Some of the following elements are not semiconductors, but exhibit a behaviour very similar to semiconductors when deposited in thin layers over other substrates.

Native Semiconductor Symbol Energy Gap (eV)
Silicon Si 1.12
Germanium Ge 0.661
Phosphorus P 2.1
Sulfur S 2.0
Carbon C 5.45
Bismuth Bi 0.024
Antimony Sb 0.17

Binary Semiconductor Compounds

Binary Compound Symbol Energy Gap (eV)
Aluminum Arsenide AlAs 2.16
Aluminum Nitride AlN 6.2
Aluminum Phosphide AlP 2.45
Antimony Telluride Sb2Te3 0.21
Cadmium Sulfide CdS 2.428
Cadmium Telluride CdTe 1.5
Gallium Arsenide GaAs 1.42
Gallium Nitride GaN 3.43
Gallium Phosphide GaP 2.24
Gallium Selenide GaSe 2.1
Indium Arsenide InAs 0.36
Indium Nitride InN 0.69
Indium Phosphide InP 1.344
Lead Selenide PbSe 0.27
Silicon Carbide SiC-3C 2.36
Silicon Carbide SiC-4H 3.28
Silicon Carbide SiC-6H 3.03
Zinc Oxide ZnO 3.37
Zinc Selenide ZnSe 2.7

Ternary Semiconductor Alloys

Ternary Alloy Symbol Energy Gap (eV)
Aluminum Gallium Arsenide AlxGa1-xAs 1.42-2.16
Copper Indium Selenide CuInSe2 1.04
Copper Gallium Selenide CuGaSe2 1.7
Indium Gallium Nitride InxGa1-xN 0.69-3.43
Mercury Cadmium Telluride MCT or Hg1-xCdxTe 0-1.5

Quaternary Semiconductor Alloys

Quaternary Alloy Symbol Energy Gap (eV)
Copper Indium Gallium Selenide CIGS or CuInxGa1-xSe2 1.0-1.7
Indium Gallium Arsenide Phosphide GaxIn1-xAsyP1-y 0.36-2.24

Organic Semiconductors

Organic Semiconductor Symbol Energy Gap (eV)
Methylammonium lead halide [CH3NH3]PbI3 1.51
Methylammonium lead halide [CH3NH3]PbBr3 2.18
Organic Semiconductor P3HT 2.0

Addendum

img
Energy gap graph for highly tunable semiconductor alloys - nature.com

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