scholarly journals Steep sulfur gradient in CZTSSe solar cells by H2S-assisted rapid surface sulfurization

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12687-12695
Author(s):  
Teoman Taskesen ◽  
Devendra Pareek ◽  
Dirk Hauschild ◽  
Alan Haertel ◽  
Lothar Weinhardt ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Band Gap ◽  
Film Surface ◽  
Photovoltaic Devices ◽  
Thin Film Surface

This article demonstrates a flash-type kinetic sulfurization method to introduce band-gap grading in CZTSe based photovoltaic devices. The developed approach allows to achieve a steep grading profile on kesterite thin-film surface.

Analysis of thin film surface barrier solar cells with a microrelief interface

2003 ◽  
Vol 76 (4) ◽  
pp. 625-635 ◽  
Author(s):  
N.L. Dmitruk ◽  
O.Yu. Borkovskaya ◽  
I.N. Dmitruk ◽  
I.B. Mamontova
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Film Surface ◽  
Surface Barrier ◽  
Thin Film Surface

Thin CuInSi Film Deposited by Magnetron Co-Sputtering

2012 ◽  
Vol 433-440 ◽  
pp. 302-305
Author(s):  
Jian Sheng Xie ◽  
Jin Hua Li ◽  
Ping Luan
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Optical Absorption ◽  
Automatic Control ◽  
Band Gap ◽  
Film Surface ◽  
X Ray Diffraction ◽  
X Ray ◽  
Absorption Studies ◽  
Different Temperatures

Thin CuInSi films have been prepared by magnetron co-sputtering, and followed by annealing in N2 atmosphere at different temperatures. The structures of CuInSi films were detected by X-ray diffraction(XRD); X-ray diffraction studies of the annealed films indicate the presence of CuInSi, In2O3 and other peaks. The morphology of the film surface was studied by SEM. The band gap has been estimated from the optical absorption studies and found to be about 1.40 eV, but changes with purity of CuInSi. CuInSi thin film is a potential absorber layer material applied in solar cells and photoelectric automatic control.

Stoichiometric composition of thin-film surface structures and its influence on the functional characteristics as regards gyroscopic devices

2020 ◽  
pp. 78-90
Author(s):  
M. A. Tit ◽  
S. N. Belyaev
Keyword(s):  
Thin Film ◽  
Titanium Nitride ◽  
Niobium Carbide ◽  
Structural Phase ◽  
Stoichiometric Composition ◽  
Film Surface ◽  
Surface Structures ◽  
Functional Surface ◽  
Base Surface ◽  
Thin Film Surface

This article considers the research results of the effect of stoichiometry on the properties of titanium nitride thin-film coatings of the float and electrostatic gyroscopes. It presents the results of tests of such mechanical and optical characteristics of titanium nitride thin-film structures as microhardness, resistance to wear and friction, and image contrast determined by the reflection coefficients of a titanium nitride base surface and a raster pattern formed by local laser oxidation. When making a rotor of a cryogenic gyroscope, the prospects of use and technological methods for the formation of functional surface structures of niobium carbide and nitride are considered. It is shown that during the formation of coatings of the required composition, the most important is the thermodynamic estimation of possible interactions. These interactions allow us to accomplish the structural-phase modification of the material, which is determined by the complex of possible topochemical reactions leading to the formation of compounds, including non-stoichiometric composition.

scholarly journals Routes to develop a [S]/([S]+[Se]) gradient in wide band-gap Cu2ZnGe(S,Se)4 thin-film solar cells

2021 ◽  
Vol 868 ◽  
pp. 159253
Author(s):  
Andrea Ruiz-Perona ◽  
Galina Gurieva ◽  
Michael Sun ◽  
Tim Kodalle ◽  
Yudania Sánchez ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Band Gap ◽  
Wide Band ◽  
Thin Film Solar Cells ◽  
Wide Band Gap

CdTe Thin Film Solar Cells: The CdS/SnO2 Front Contact

2001 ◽  
Vol 668 ◽  
Author(s):  
J. Fritsche ◽  
S. Gunst ◽  
A. Thiβen ◽  
R. Gegenwart ◽  
A. Klein ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Band Gap ◽  
Photoelectron Spectroscopy ◽  
Tin Dioxide ◽  
Surface Preparation ◽  
Thin Film Solar Cells ◽  
Subsequent Formation ◽  
Coated Glass ◽  
Preparation Conditions

ABSTRACTTin dioxide (SnO2) coated glass is the commonly used substrate for thin film solar cells based on CdTe absorbers. We have investigated the properties of the CdS/SnO2 interface by X-ray and ultraviolet photoelectron spectroscopy. SnO2 coated glass substrates as used for solar cell preparation were cleaned by different procedures such as derinsing, sputtering, heating and annealing in oxygen atmosphere. Different surface properties with a strongly dependent number of defects in the SnO2 band gap are identified. CdS films were deposited stepwise by thermal evaporation to determine the electronic interface properties for different surface preparation conditions. Comparative barrier heights at the CdSSnO2 contact are found for most surface pretreatments. The Fermi level position in these cases is situated in the SnO2 band gap. A different interface behaviour is determined for sputter cleaned SnO2 surfaces, which is attributed to the formation of oxygen vacancies during sputtering and subsequent formation of an interfacial SnOxSy compound.

A comparative study of solution-processed low- and high-band-gap chalcopyrite thin-film solar cells

2014 ◽  
Vol 47 (13) ◽  
pp. 135105 ◽  
Author(s):  
Se Jin Park ◽  
Yunae Cho ◽  
Sung Hwan Moon ◽  
Ji Eun Kim ◽  
Doh-Kwon Lee ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Comparative Study ◽  
Band Gap ◽  
Thin Film Solar Cells ◽  
Solution Processed ◽  
High Band

Studies on the graded band-gap copper indium di-selenide thin film solar cells prepared by electrochemical route

2019 ◽  
Vol 466 ◽  
pp. 358-366 ◽  
Author(s):  
Ashwini B. Rohom ◽  
Priyanka U. Londhe ◽  
Jeong In Han ◽  
Nandu B. Chaure
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Band Gap ◽  
Thin Film Solar Cells ◽  
Copper Indium ◽  
Graded Band Gap ◽  
Selenide Thin Film
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