Open AccessStructural and Optical Properties of Chemically Deposited Metal Chalcogenide Thin Film CrS and its Photovoltaic Application
Author(s) -
J. Chandrasekar,
Д. Маникандан
Publication year - 2022
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2022.23470
Subject(s) - thin film , chemical bath deposition , crystallite , photoluminescence , chalcogenide , chemistry , deposition (geology) , solar cell , dye sensitized solar cell , chemical engineering , analytical chemistry (journal) , materials science , nanotechnology , optoelectronics , electrolyte , crystallography , electrode , paleontology , chromatography , sediment , engineering , biology
In this work, chromium sulfide (CrS) thin films were grown on the acetic acid substrates by chemicalbath deposition to prepare non-toxic photovoltaic devices. The combined single-source precursorapproach has been developed for the deposition method usingtris(diethyldithiocarbamato)chromium(III) for the deposition of CrS thin films grown at bathtemperatures of 30, 60 and 90 ºC and at a constant deposition time of 30-120 min. The sufracemophology of the prepared films have been analyzed by SEM and HR-TEM techniques. The study ofthe films indicate the distributed roughness and nano bundled hexagonal structures. The energydispersive X-ray (EDX) spectroscopy analysis conformed the presence of Cr and S. The polycrystallinebehaviour of the films was studied by an XRD study which revealed the mixed phases with a predictedcrystallite size of 20 nm. The optical measurements showed films had a maximum transmittance of90% in the visible region and the evaluated energy band varied in the range of 2.2-2.378 eV with thechange of bath temperatures. This suggests that CrS thin film prepared at 90 ºC has enhanced crystallinesuperiority. According to photoluminescence (PL) analysis, the green emission can be attributed tothe presence of several deep trap states or defects in the CrS structure. Moreover, natural dye sensitizedsolar cells (DSSCs) in CrS thin film prepared at 90 ºC, Jsc (28.0 mA/cm2) produced a larger voltage inthe short circuit as compared to synthetic dye sensitized solar cells (DSSCs) using CrS thin film Jsc(22.5 mA/cm2).