Working Principle of a Semiconductor Based Solar Cell Band Gap II - - PowerPoint PPT Presentation

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Working Principle of a Semiconductor Based Solar Cell Band Gap II - Electrons in Molecular Bonds Week 2.2.2 Arno Smets Bonding of electrons in Si network 3p 3s Bonding of electrons in Si network 3p 3s Molecular description of band gap

Working Principle of a Semiconductor Based Solar Cell Band Gap II - Electrons in Molecular Bonds Week 2.2.2 Arno Smets
Bonding of electrons in Si network 3p 3s
Bonding of electrons in Si network 3p 3s
Molecular description of band gap Anti-Bonding sp 3 sp 3 Bonding
Molecular description of band gap Anti-Bonding sp 3 sp 3 Bonding
Molecular description of band gap Anti-Bonding conduction sp 3 sp 3 Band gap Band gap valence Bonding
Molecular description of band gap LUMO conduction Band gap valence HOMO
Semiconductor Materials IV semiconductors: Si, Ge
Carbon, silicon and Germanium Lattice constant = Lattice constant 4 3  Bond Length
Semiconductor Materials IV semiconductors: Si, Ge III-V semiconductors: GaAs:
Semiconductor Materials IV semiconductors: Si, Ge III-V semiconductors: II-VI semiconductors GaAs: CdTe:

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