Material Properties

Effective masses for electrons in CuInSe2 are 0.1mo (Weinert et al. 1977; Arushanov et al. 1993) and 0.7mo for the holes (Ruckh et al. 1996a; Schroeder and Rockett

Fig. 39.1 Optical absorption coefficient of CuInSe2 and Cu(InGa)Se2

1997). These experimental values agree with recently refined local density approx­imation calculations, which show anisotropy of the hole effective masses with a factor of 4 difference between parallel and perpendicular to the c-axis. CuInSe2 has the lower effective hole mass perpendicular to the c-axis (see Table 39.1).

Updated: August 23, 2015 — 4:32 pm