ZnSe and copper-doped ZnSe nanocrystals (NCs): Optical absorbance and precise determination of energy band gap beside their exact optical transition type and Urbach energy

2017 ◽  
Vol 17 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Dariush Souri ◽  
Ali Reza Khezripour ◽  
Mehdi Molaei ◽  
Masoud Karimipour
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Urbach Energy ◽  
Optical Transition ◽  
Precise Determination ◽  
Energy Band Gap ◽  
Optical Absorbance ◽  
Znse Nanocrystals ◽  
Transition Type

The Role of Samarium Ion in Optical Properties of Magnesium Tellurite Glass Embedded with Silver Nanoparticles

2015 ◽  
Vol 1107 ◽  
pp. 460-465
Author(s):  
M.Y. Nurulhuda ◽  
M.R. Sahar
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Tellurite Glass ◽  
Urbach Energy ◽  
Energy Band Gap ◽  
Optical Energy ◽  
Optical Energy Band Gap ◽  
Absorption Studies ◽  
Uv Visible

A series of tellurite glass based on composition (89.6-x)TeO2-10MgO-xSm2O3-0.4AgCl where 0.2x1.0 have successfully been prepared by melt-quenching technique. The optical behaviour has been examined as a function of Sm2O3 content by using UV-Visible Spectroscopy in the range of 200-900 nm. The absorption studies revealed that the indirect and direct optical energy band gap is in the range of 2.81-3.11 eV and 3.16-3.45 eV, respectively. Meanwhile, Urbach energy, E is in between 0.18-0.24 eV. The increasing in samarium ion up to 0.4 mol% of Sm2O3 result in an increment of optical energy band gap, but gradually decreases beyond 0.4 mol%. All the results will be discussed with respect to Sm2O3 content.

Determination of the Energy Band Gap Depending on the Oxidized Structures of Quantum Dots

2012 ◽  
Vol 116 (21) ◽  
pp. 11792-11796 ◽  
Author(s):  
Eunseog Cho ◽  
Hyosook Jang ◽  
Shinae Jun ◽  
Hyun A Kang ◽  
Jae Gwan Chung ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap

Photoacoustic determination of energy band gap of semiconductors

Pramana ◽  
1987 ◽  
Vol 28 (3) ◽  
pp. 293-297 ◽  
Author(s):  
R S Ram ◽  
O M Prakash ◽  
A N Pandey
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap

Alternative Approach for Determination of Energy Band Gap of Semiconductors Through Electrical Analysis

2010 ◽  
Author(s):  
Orhan Özdemi̇r ◽  
Beyhan Tatar ◽  
Deneb Yilmazer ◽  
Pnar Gökdemi̇r ◽  
Mustafa Ürgen ◽  
...  
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap ◽  
Alternative Approach ◽  
Electrical Analysis

Method of determination of the energy band gap of oxide films

2013 ◽  
Vol 39 (6) ◽  
pp. 664-666 ◽  
Author(s):  
V. I. Shapovalov ◽  
A. E. Komlev ◽  
A. A. Komlev ◽  
A. A. Morozova ◽  
A. E. Lapshin
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Oxide Films ◽  
Energy Band Gap ◽  
Method Of Determination
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