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Urbach tails in the absorption spectra of amorphous and crystalline SiO 2

✍ Scribed by Bosio, C.; Czaja, W.

Book ID
120253783
Publisher
Taylor and Francis Group
Year
1991
Tongue
English
Weight
459 KB
Volume
63
Category
Article
ISSN
1364-2812

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Urbach tail in the absorption spectra of
Urbach tail in the absorption spectra of 2H-WSe2layered crystals
✍ Hu, S. Y. ;Lee, Y. C. ;Shen, J. L. ;Chen, K. W. ;Huang, Y. S. πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons 🌐 English βš– 391 KB

## Abstract Urbach's rule and steepness parameter of 2H‐WSe~2~ layered crystals have been studied via the absorption spectra from the photoconductivity (PC) measurements in the temperature range of 15–300 K. From the analysis of the temperature‐dependent band gap with Varshni semi‐empirical equatio