Properties and characterization of CZTS nanoparticles prepared by microwave heating irradiation
| Autor: | Giedrė Grincienė, Vidas Pakštas, Raimondas Giraitis, Loreta Tamašauskaitė-Tamašiūnaitė, Jurga Juodkazytė, Gediminas Niaura, Remigijus Juškėnas, Birutė Šimkūnaitė-Stanynienė, Eugenijus Norkus, Arnas Naujokaitis |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Annealing (metallurgy) Nanoparticle 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology 01 natural sciences law.invention symbols.namesake chemistry.chemical_compound Chemical engineering Nanocrystal chemistry law 0103 physical sciences Solar cell symbols Direct and indirect band gaps CZTS 0210 nano-technology Raman spectroscopy Stoichiometry |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 2424-4538 0235-7216 |
| Popis: | Cu2ZnSnS4 (CZTS) nanoparticles suitable for solar cell absorber fabrication were synthesized by the microwave-assisted heating method. The influence of the reaction temperature, the temperature increase duration and post-annealing temperature on the chemical composition, crystallographic structure, phase purity and optical properties of CZTS nanocrystals has been investigated by means of XRD, Raman spectroscopy, scanning (SEM) and transmission electron microscopies (TEM), EDX and UV–Vis spectroscopies. The chemical composition of the CZTS nanoparticles synthesized at a temperature of 250°C and the temperature increase duration of 10 min are almost stoichiometric. The post-annealing process of CZTS has been investigated by means of the in situ XRD method. The results obtained point to the presence of a pure CZTS phase after annealing of the synthesized powder at a temperature of 550°C. The direct band gap energy (Eg) of the CZTS nanoparticles obtained depends on the post-annealing temperature and reaches nearly 1.5 eV at 550°C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|