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Luminescence, transmission and width of the energy gap of CdTe single crystals

✍ Scribed by C.Z. Van Doorn; D. De Nobel

Book ID
104162363
Publisher
Elsevier Science
Year
1956
Weight
214 KB
Volume
22
Category
Article
ISSN
0031-8914

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✦ Synopsis

Irradation of a CdTe single crystal or biasing a CdTe-p,n junction in the forward direction lead to a luminescence with a maximum at about 8880/~.

From transmission measurements and measurements of the long wave limit of the photo emf. of a CdTe-p-n junction as a function of the temperature, the shift of the band edge was seen to vary from 2.34 Γ— 10 -~ eV/Β°K at 77Β°K to 5.44 Γ— 10-* eV/Β°K at 800Β°K.

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A single crystal of GaTe was prepared by the modified Bridgman technique method. The interband absorption coefficients were measured, near the fundamental absorption edge, as a function of the wavelength of the incident photons at various temperatures. Based on the three-and two-dimensional models,