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Effect of Al doping on the structural and optical properties of electrodeposited SnS thin films
Author(s) -
Kafashan Hosein,
EbrahimiKahrizsangi Reza,
JamaliSheini Farid,
Yousefi Ramin
Publication year - 2016
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201532920
Subject(s) - crystallinity , photoluminescence , crystallite , materials science , orthorhombic crystal system , doping , thin film , chemical bath deposition , tin oxide , analytical chemistry (journal) , substrate (aquarium) , scanning electron microscope , aqueous solution , chemical engineering , nanotechnology , crystallography , crystal structure , chemistry , optoelectronics , metallurgy , composite material , oceanography , chromatography , geology , engineering
Al‐doped SnS thin films with different Al concentrations were deposited on fluorine doped tin oxide (FTO) substrate from aqueous solution containing 2 mM SnCl 2 and 20 mM Na 2 S 2 O 3 and various amounts of 5 mM AlCl 3 solution. The pH, temperature, time, and deposition potential ( E ) of the solution were kept at 2.1, 60 °C, 30 min and −1 V, respectively. The deposited films were characterized by X‐ray diffraction (XRD), field emission scanning electron microscopy (FESEM), photoluminescence (PL), and UV‐Vis. XRD patterns obviously indicated that the synthesized Al‐doped SnS were polycrystalline with orthorhombic structure and by increasing the amount of Al concentration, the crystallinity was increased. The FESEM images showed that the morphology of the nanostructures was changed with increasing Al content. PL and UV‐Vis analysis were used to investigate the optical properties of materials. The PL spectra showed a red shift with increasing of Al concentration.