H. Bellakhder et al., CHARACTERIZATION OF TE ZN/TE ... MULTILAYERS DEPOSITED BY RF-SPUTTERING/, Solar energy materials and solar cells, 45(4), 1997, pp. 361-368
Structures consisting of alternating Te and Zn layers were prepared by
RF-sputtering. Grazing incidence X-ray diffraction (GIXD) measurement
s revealed the formation of ZnTe and the existence of free Zn in as-de
posited samples. Similar measurements on samples annealed for 2 h at 3
00 degrees C showed enhanced crystallinity of ZnTe as well as the form
ation of oxides when annealing time is extended to 8 h. UV-Visible-NIR
transmission measurements showed that metallic-type absorption domina
tes in as-deposited samples. Annealed samples at 300 degrees C showed
well defined absorption edges with an energy gap of 2.50 eV for anneal
ing times of 2 h and 2.24 eV when the annealing time is extended to 8
h.