Deep defect related photoluminescence in heavily doped GuGaTe2Jagomägi, Andri; Krustok, Jüri; Grossberg, Maarja; Danilson, Mati; Raudoja, JaanPhysica status solidi (a)2006 / 5, p. 949-955 : ill http://deepzone3.ttu.ee/~juri.krustok/PDF-s/Deep%20defect%20related%20photoluminescence%20in%20heavily%20doped.pdf