Synthesis of ternary and quaternary CuIn_xGa_(1-x)Se_2 (0 <= x <= 1) semiconductor nanocrystals

摘要

Semiconducting CuIn_xGa_(1-x)Se_2 nanocrystals (20-30 nm) have been synthesized over the whole composition range using a facile solution-based method. Depending on the synthesis conditions, the nanocrystals exhibit a cubic or spherical morphology with a narrow size distribution. The band gap increases with increasing Ga concentration and the values are close to those observed in the bulk.