Manganese (Mn) doping effects on the structure and surface characteristics of copper zinc tin sulphide (CZTS) transition metal sulphides synthesised via a sol–gel method
Ahamed Razeek Najitha, Siti Rudhziah Che Balian, Hassan Ahmoum, Fatin Saiha Omar, Puvaneswaran Chelvanathan, Mohd Sukor Su'ait
TL;DR
This study explores how adding manganese to copper zinc tin sulphide changes its structure and surface properties, potentially improving its use in electronic and energy applications.
Contribution
The novel contribution is the investigation of Mn doping effects on CZTS using a sol–gel method, revealing structural and surface modifications.
Findings
Mn doping increases crystallite size and reduces strain and dislocation density in CZTS.
Mn doping alters surface characteristics, including charge mobility and particle agglomeration.
Mn substitution into CZTS is confirmed, enhancing its potential for electronic and energy applications.
Abstract
Transition metal sulphides have emerged as promising candidates for a range of electronic and energy-related applications owing to their tunable characteristics. This study investigates the effects of manganese (Mn)-doped copper zinc tin sulphide (Cu2ZnSnS4, CZTS) on its structural and surface properties. Mn-doped CZTS samples were synthesised via a sol–gel method at various doping percentages. The resulting samples were sulphurised prior to the physicochemical analyses. X-ray diffraction (XRD) confirmed the formation of a tetragonal phase, with noticeable lattice expansion due to Mn incorporation. The crystallite size increased from 24.52 nm to 42.01 nm at low Mn doping levels, while the degree of crystallinity decreased to 50–65%. Correspondingly, the strain and dislocation density were reduced to 3.32 × 10−3 rad and 0.57 × 10−3 (nm)−2, respectively. Raman analysis verified a…
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Taxonomy
TopicsChalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties · ZnO doping and properties