Synthesis and optical properties of photovoltaic materials based on the ambipolar dithienonaphthothiadiazole unit

2015 ◽  
Vol 3 (8) ◽  
pp. 4229-4238 ◽  
Author(s):  
Tatsuaki Nakanishi ◽  
Yasuhiro Shirai ◽  
Liyuan Han
Keyword(s):  
Optical Properties ◽  
Photovoltaic Materials

Dithieno[3′2′:5,6;2′′,3′′:7,8]naphtho[2,3-c][1,2,5]thiadiazole (DTNT) was designed to control the band energies of the polymers for photovoltaic materials.

scholarly journals The Effect of Carbon Defects in the Coal–Pyrite Vacancy on the Electronic Structure and Optical Properties: A DFT + U Study

Minerals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 815
Author(s):  
Wei Cheng ◽  
Chen Cheng ◽  
Baolin Ke
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Absorption Coefficient ◽  
Light Absorption ◽  
Density Functional ◽  
Doping Concentration ◽  
Carbon Doping ◽  
Photovoltaic Materials ◽  
Light Absorption Coefficient ◽  
Carbon Impurities

Pyrite is a mineral often associated with coal in coal seams and is a major source of sulfur in coal. Coal–pyrite is widely distributed, easily available, low-cost, and non-toxic, and has high light absorption coefficient. So, it shows potential for various applications. In this paper, the density-functional theory (DFT + U) is used to construct coal–pyrite with carbon doped in the sulfur and iron vacancies of pyrite. The effects of different carbon defects, different carbon doping concentrations, and different doping distributions in the same concentration on the electronic structure and optical properties of coal–pyrite were studied. The results show that the absorption coefficient and reflectivity of coal–pyrite, when its carbon atom substitutes the iron and sulfur atoms in the sulfur and iron vacancies, are significantly higher than those of the perfect pyrite, indicating that coal–pyrite has potential for application in the field of photovoltaic materials. When carbon is doped in the sulfur vacancy, this impurity state reduces the width of the forbidden band; with the increase in the doping concentration, the width of the forbidden band decreases and the visible-light absorption coefficient increases. The distribution of carbon impurities impacts the band gap but has almost no effect on the light absorption coefficient, complex dielectric function, and reflectivity, indicating that the application of coal–pyrite to photovoltaic materials should mainly consider the carbon doping concentration instead of the distribution of carbon impurities. The research results provide a theoretical reference for the application of coal–pyrite in the field of photoelectric materials.

Design, theoretical study and correlation of the electronic and optical properties of diethynylphenylthiophene as photovoltaic materials

2020 ◽  
Vol 1201 ◽  
pp. 127093 ◽  
Author(s):  
Melissa Suarez ◽  
Carolina Caicedo ◽  
Jimmy Morales ◽  
Edwin Flórez- López ◽  
Yenny Ávila- Torres
Keyword(s):  
Optical Properties ◽  
Theoretical Study ◽  
Electronic And Optical Properties ◽  
Photovoltaic Materials

Measurement of optical properties in organic photovoltaic materials using monochromated electron energy-loss spectroscopy

2016 ◽  
Vol 4 (35) ◽  
pp. 13636-13645 ◽  
Author(s):  
Jessica A. Alexander ◽  
Frank J. Scheltens ◽  
Lawrence F. Drummy ◽  
Michael F. Durstock ◽  
James B. Gilchrist ◽  
...  
Keyword(s):  
Optical Properties ◽  
Energy Loss ◽  
Electron Energy ◽  
Organic Photovoltaics ◽  
Electron Energy Loss Spectroscopy ◽  
Organic Photovoltaic ◽  
Spatially Resolved ◽  
Photovoltaic Materials ◽  
Organic Photovoltaic Materials ◽  
Electron Energy Loss

Spatially resolved mapping of optical properties in organic photovoltaics.

Optical properties of new photovoltaic materials: AgCuO2 and Ag2Cu2O3

2009 ◽  
Vol 149 (37-38) ◽  
pp. 1569-1573 ◽  
Author(s):  
J. Feng ◽  
B. Xiao ◽  
J.C. Chen ◽  
C.T. Zhou ◽  
Y.P. Du ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photovoltaic Materials

scholarly journals Experimental Data on design, theoretical and correlation of the electronic and optical properties of diethynylphenylthiophene as photovoltaic materials

Data in Brief ◽  
2020 ◽  
Vol 30 ◽  
pp. 105579
Author(s):  
Yenny Ávila-Torres ◽  
Melissa Suarez ◽  
Carolina Caicedo ◽  
Hoover Valencia ◽  
Edwin Flórez-López
Keyword(s):  
Experimental Data ◽  
Optical Properties ◽  
Electronic And Optical Properties ◽  
Photovoltaic Materials

scholarly journals Effect of oxygen implantation on microstructural and optical properties of ZnTe:O intermediate-band photovoltaic materials

2014 ◽  
Vol 63 (23) ◽  
pp. 237103
Author(s):  
Zhen Kang ◽  
Gu Ran ◽  
Ye Jian-Dong ◽  
Gu Shu-Lin ◽  
Ren Fang-Fang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Intermediate Band ◽  
Oxygen Implantation ◽  
Photovoltaic Materials ◽  
Effect Of Oxygen
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