Benzodifuran-alt-thienothiophene based low band gap copolymers: substituent effects on their molecular energy levels and photovoltaic properties

2013 ◽  
Vol 4 (10) ◽  
pp. 3047 ◽  
Author(s):  
Lijun Huo ◽  
Zhaojun Li ◽  
Xia Guo ◽  
Yue Wu ◽  
Maojie Zhang ◽  
...  
Keyword(s):  
Band Gap ◽  
Energy Levels ◽  
Substituent Effects ◽  
Photovoltaic Properties ◽  
Low Band Gap

High photovoltage achieved in low band gap polymer solar cells by adjusting energy levels of a polymer with the LUMOs of fullerene derivatives

2008 ◽  
Vol 18 (45) ◽  
pp. 5468 ◽  
Author(s):  
Fengling Zhang ◽  
Johan Bijleveld ◽  
Erik Perzon ◽  
Kristofer Tvingstedt ◽  
Sophie Barrau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Low Band Gap ◽  
Fullerene Derivatives ◽  
Low Band Gap Polymer

Synthesis and photovoltaic properties of low band gap quarterthiophenes-alt-diketopyrrolopyrroles polymers having high hole mobility

2012 ◽  
Vol 104 ◽  
pp. 185-192 ◽  
Author(s):  
Seon Kyoung Son ◽  
Bong Soo Kim ◽  
Chun-Young Lee ◽  
Joong Suk Lee ◽  
Jeong Ho Cho ◽  
...  
Keyword(s):  
Band Gap ◽  
Hole Mobility ◽  
Photovoltaic Properties ◽  
Low Band Gap

New D–π-A push–pull chromophores as low band gap molecular semiconductors for organic small molecule solar cell applications

2018 ◽  
Vol 5 (5) ◽  
pp. 777-787 ◽  
Author(s):  
Abbasriyaludeen Abdul Raheem ◽  
Santhosh Kamaraj ◽  
Veeman Sannasi ◽  
Chandrasekar Praveen
Keyword(s):  
Solar Cell ◽  
Band Gap ◽  
Energy Levels ◽  
Organic Photovoltaic ◽  
Lumo Energy ◽  
Low Band Gap ◽  
Photovoltaic Applications ◽  
Pull Systems ◽  
Molecular Semiconductors ◽  
Homo Lumo

Low band gap molecular semiconductors based on push–pull systems with appropriate HOMO–LUMO energy levels for organic photovoltaic applications were accomplished.

scholarly journals Comparative studies on the electronic transport in magnetically quantized low band gap semiconductor system

BIBECHANA ◽  
2020 ◽  
Vol 17 ◽  
pp. 34-41
Author(s):  
S Shrestha ◽  
C K Sarkar
Keyword(s):  
Magnetic Field ◽  
Band Structure ◽  
Band Gap ◽  
Cadmium Telluride ◽  
Figure Of Merit ◽  
Mercury Cadmium Telluride ◽  
Energy Levels ◽  
Transverse Component ◽  
Band Structures ◽  
Low Band Gap

The Q1D system formed by magnetically confined system is attracting attention of researchers in device application because it is capable of over-looking the various techniques of fabrication difficulties and defects created by such fabrication techniques. In the presence of a high magnetic field, the transverse component of the energy dispersion relation gets quantized into various equally spaced energy levels called Landau levels and the motion of the carriers is completely restricted. However, the longitudinal component along the field is still free to move. The mobility of such system is enhanced when a low effective mass semiconductors n-HgCdTe (Mercury Cadmium Telluride) is used. The band structure of n-HgCdTe is found to be nonparabolic due to its low band gap according to Kane [Phadke and Sharma, 1975]. Recent publications, based on experimental verifications of transport coefficient of n-HgCdTe of Chen and Sher [Chen and Sher, 1982] show that the band structure of Mercury Cadmium Telluride (MCT) is more hyperbolic in nature rather than nonparabolic. The author has compared the effect of band structures on the various transport properties of MCT such as mobility, Seebeck coefficient, thermal conductivity, figure of merit (Z) etc. The figure of merit is a very important property of a material to be used in thermoelectric devices, such as cooler, refrigerator etc. The product of Z and temperature i.e. (ZT), a dimensionless quantity is found to be maximum for parabolic band structure and is followed by nonparabolic and hyperbolic band structures for all ranges of variation of temperature as well as magnetic field. Taking the hyperbolic band structure of MCT, the effect of high and low temperature scattering mechanisms on ZT is also observed. BIBECHANA 17 (2020) 34-41

scholarly journals Photovoltaic properties of low-band-gap fluorene-based donor–acceptor copolymers

2010 ◽  
Vol 518 (8) ◽  
pp. 2119-2123 ◽  
Author(s):  
Wen-Ya Lee ◽  
Kai-Fang Cheng ◽  
Then-Fu Wang ◽  
Wen-Chang Chen ◽  
Feng-Yu Tsai
Keyword(s):  
Band Gap ◽  
Photovoltaic Properties ◽  
Low Band Gap ◽  
Donor Acceptor
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