Synthesis, characterization and size dependent energy band gap of binary CdSe quantum dot and its nanoparticle film

2011 ◽  
Vol 8 (S1) ◽  
pp. S104-S109 ◽  
Author(s):  
R. Moradian ◽  
N. Ghobadi ◽  
M. Roushani ◽  
M. Shamsipur
Keyword(s):  
Quantum Dot ◽  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap ◽  
Size Dependent ◽  
Cdse Quantum Dot ◽  
Nanoparticle Film

scholarly journals Ultra-optical characterization of thin film solar cells materials using core/shell absorber layer

2022 ◽  
Vol 12 (2) ◽  
pp. 1377
Author(s):  
Ahmed Thabet ◽  
Safaa Abdelhady ◽  
Youssef Mobarak
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Quantum Dot ◽  
Band Gap ◽  
Energy Band ◽  
Absorber Layer ◽  
Thin Film Solar Cells ◽  
Window Layer ◽  
Core Shell ◽  
Energy Band Gap

<span>This paper investigates on new design of heterojunction quantum dot (HJQD) photovoltaics solar cells CdS/PbS that is based on quantum dot metallics PbS core/shell absorber layer and quantum dot window layer. It has been enhanced the performance of traditional HJQD thin film solar cells model based on quantum dot absorber layer and bulk window layer. The new design has been used sub-micro absorber layer thickness to achieve high efficiency with material reduction, low cost, and time. Metallics-semiconductor core/shell absorber layer has been succeeded for improving the optical characteristics such energy band gap and the absorption of absorber layer materials, also enhancing the performance of HJQD ITO/CdS/QDPbS/Au, sub micro thin film solar cells. Finally, it has been formulating the quantum dot (QD) metallic cores concentration effect on the absorption, energy band gap and electron-hole generation rate in absorber layers, external quantum efficiency, energy conversion efficiency, fill factor of the innovative design of HJQD cells.</span>

Selective Intermixing of InAs/InGaAs/InP Quantum Dot Structure With Large Energy Band Gap Tuning

2008 ◽  
Vol 7 (4) ◽  
pp. 422-426 ◽  
Author(s):  
Tang Xiaohong ◽  
Yin Zongyou ◽  
Teng Jinghua ◽  
Du Anyan ◽  
Chin Mee Koy
Keyword(s):  
Quantum Dot ◽  
Band Gap ◽  
Energy Band ◽  
Large Energy ◽  
Energy Band Gap ◽  
Band Gap Tuning

scholarly journals No Resistive Normal Electrons in Beginning Superconducting States

Mathematics ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1512
Author(s):  
Changho Seo ◽  
Seongsoo Cho ◽  
Je Huan Koo
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap

We investigate why normal electrons in superconductors have no resistance. Under the same conditions, the band gap is reduced to zero as well, but normal electrons at superconducting states are condensed into this virtual energy band gap.

Energy Band Gap Studies of CdS Nanomaterials

2008 ◽  
Vol 3 ◽  
pp. 97-102 ◽  
Author(s):  
Dinu Patidar ◽  
K.S. Rathore ◽  
N.S. Saxena ◽  
Kananbala Sharma ◽  
T.P. Sharma
Keyword(s):  
Optical Absorption ◽  
Band Gap ◽  
Energy Band ◽  
Chemical Method ◽  
Optical Absorption Spectroscopy ◽  
Cds Nanoparticles ◽  
X Ray Diffraction ◽  
Energy Band Gap ◽  
X Ray ◽  
Simple Chemical

The CdS nanoparticles of different sizes are synthesized by a simple chemical method. Here, CdS nanoparticles are grown through the reaction of solution of different concentration of CdCl2 with H2S. X-ray diffraction pattern confirms nano nature of CdS and has been used to determine the size of particle. Optical absorption spectroscopy is used to measure the energy band gap of these nanomaterials by using Tauc relation. Energy band gap ranging between 3.12 eV to 2.47 eV have been obtained for the samples containing the nanoparticles in the range of 2.3 to 6.0 nm size. A correlation between the band gap and size of the nanoparticles is also established.

Tailoring energy band gap and optical absorption of Cd doped MnTe2

2020 ◽  
pp. 111059
Author(s):  
B. Thapa ◽  
P.K. Patra ◽  
Sandeep Puri ◽  
K. Neupane ◽  
A. Shankar
Keyword(s):  
Optical Absorption ◽  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap

Energy band gap of the alloy Zn1−xMgxSeyTe1−y lattice matched to ZnTe, InAs and InP

2000 ◽  
Vol 214-215 ◽  
pp. 350-354 ◽  
Author(s):  
Kyurhee Shim ◽  
Herschel Rabitz ◽  
Ji-Ho Chang ◽  
Takafumi Yao
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap ◽  
Lattice Matched
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