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Synthesis and characterization of bulk Cu2ZnSnX4 (X: S, Se) via thermodynamically supported mechano-chemical process

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Title Synthesis and characterization of bulk Cu2ZnSnX4 (X: S, Se) via thermodynamically supported mechano-chemical process
 
Creator PAREEK, D
BALASUBRAMANIAM, KR
SHARMA, P
 
Subject PULSED-LASER DEPOSITION
THIN-FILMS
SOLAR-CELL
RAMAN-SCATTERING
KESTERITE CU2ZNSNS4
SOLVOTHERMAL METHOD
ABSORBER MATERIAL
NANOCRYSTALS
FABRICATION
SULFURIZATION
Cu2ZnSnS4
Cu2ZnSnSe4
Kesterite
Mechano-chemical synthesis
 
Description Materials with the general formula, Cu2ZnSnX4 (CZTX: X: Group 16 elements), with X being S/Se, have been receiving considerable attention due to their utility as an absorber layer in solar photovoltaics (PV). This paper reports on the synthesis of CZTSe and CZTS nanocrystalline powders at low temperatures, starting from elemental metal and chalcogen powders, via the low cost, scalable technique of ball milling. The prepared samples were well characterized using the different characterization tools. XRD, Raman, SEM and TEM studies confirm the formation of single-phase, stoichiometric, nano-crystalline kesterite CZTS and CZTSe powders. The low temperature phase selection of the complex quaternary compound in this system is seen as a direct consequence of the thermodynamic facilitation, coupled with the capability of mechano-chemical synthesis to aid in overcoming kinetic constraints. The optical bandgap of the various samples of CZTS was observed in the range of 1.4-1.6 eV and corresponding values for CZTSe was observed to be in the range of 1.08-1.18 eV. Our work provides a pathway for developing cheap, scalable, and ink-based techniques for low cost solar PV. (C) 2015 Elsevier Inc. All rights reserved.
 
Publisher ELSEVIER SCIENCE INC
 
Date 2016-01-15T04:33:44Z
2016-01-15T04:33:44Z
2015
 
Type Article
 
Identifier MATERIALS CHARACTERIZATION, 103,42-49
1044-5803
1873-4189
http://dx.doi.org/10.1016/j.matchar.2015.03.014
http://dspace.library.iitb.ac.in/jspui/handle/100/17768
 
Language en