Figure 10
From: Deliberate and Accidental Gas-Phase Alkali Doping of Chalcogenide Semiconductors: Cu(In,Ga)Se2

Schematics of gas-phase alkali compound generation, transport and incorporation into the chalcogenide semiconductor (CIGSe here) without (a) and with (b–e) assistance of elemental chalcogen and/or hydrogen. The left top corner indicates the contamination of the annealing chamber by the residual products.