Close spaced sublimation deposition of CdTe layers with process gas oxygen for thin film solar cells. - Krishnakumar, V.; Späth, B.; Drost, C.; Kraft, C.; Siepchen, B.; Delahoy, A.; Tan, X.; Chin, K.; Peng, S.; Hirsch, D.; Zywitzki, O.; Modes, T.; et al. (Thin Solid Films, 2017)