Research Article

Morphological, Structural, and Optical Properties of Single-Phase Cu(In,Ga)Se2 Thin Films from the Selenization of Thermally Evaporated InSe/Cu/GaSe Precursors

Table 1

Increase in calculated and experimental band-gap energy with increase in gallium content for Cu( )Se2 alloys.

StructureCalculated BE (meV)Energy from PL (eV)Estimated band gap (eV)Experimental band gap (eV)

CuIn0.98Ga0.02Se27.60.950.961.01
CuIn0.78Ga0.22Se28.91.021.031.08
CuIn0.65Ga0.35Se29.81.161.171.21