𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Temperature dependence of the optical gap in thin amorphous films of As2S3, As2Se3 and other basic non-crystalline chalcogenides

✍ Scribed by H. Tichá; L. Tichý; P. Nagels; E. Sleeckx; R. Callaerts

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
146 KB
Volume
61
Category
Article
ISSN
0022-3697

No coin nor oath required. For personal study only.

✦ Synopsis

Optical transmittivity in the UV-VIS region of thermally evaporated amorphous As 2 S 3 , and As 2 Se 3 thin films was measured in the temperature region 15 K Ͻ T Յ 300 K: The temperature dependence of the optical gap E g T was found to be in agreement with Fan's one-phonon approximation or with Cody's one-oscillator model. The parameters necessary to describe the E g T dependences for non-crystalline Se, As 2 S 3 , As 2 Se 3 , GeS 2 and GeSe 2 , according to a simple linear relation, Varshni's relation, and Fan's or Cody's model are summarized.

📜 SIMILAR VOLUMES

The Effect of Metal Dopants on Photodark
The Effect of Metal Dopants on Photodarkening Kinetics in Amorphous AsSe and As2Se3 Thin Films
✍ Iovu, M.S. ;Shutov, S.D. ;Rebeja, S.Z. ;Colomeyco, E.P. ;Popescu, M. 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 115 KB 👁 2 views

Photodarkening relaxation under light exposure of a-As 2 Se 3 amorphous films doped with 0.5 at.% of metals Sn, Mn, Sm or Dy and a-AsSe films doped with Sn up to 10.0 at.% Sn was studied in dependence on the impurity and thermal treating. Both factors reduce photodarkening and the degree of reductio