Fabrication of semiconducting pyrite thin films from hydrothermally synthesized pyrite (FeS2) powder
| Autor: | Ahalapitiya H. Jayatissa, Zhengqi Shi, Frank Peiris |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Band gap Photoconductivity Mineralogy Nanoparticle 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Grain size 0104 chemical sciences Electronic Optical and Magnetic Materials Amorphous solid Chemical engineering Phase (matter) engineering Pyrite Electrical and Electronic Engineering Thin film 0210 nano-technology |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 27:535-542 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-015-3786-5 |
| Popis: | Thin films of pyrite (FeS2) were fabricated using synthesized nano-particles and their structural, electrical and optical properties were characterized. Initially, pyrite-nano-particles were synthesized by an aqueous hydrothermal reaction. The X-ray diffraction confirmed that synthesized pyrite had a phase pure cubic pyrite structure with the average grain size around 30.0 nm. The pyrite films were fabricated by vacuum thermal evaporation of pyrite nanoparticles followed by a thermal sulfurization process. The as-deposited films have an amorphous structure and the sulfurized films have a cubic pyrite structure. The optical properties exhibited the bandgap closer to previously reported bandgap of pyrite. The photoconductivity of pyrite films was measured under AM1.5G sunlight and infrared (850 nm) light illumination. The photoconductivity data showed that the sulfurized pyrite films were more photoconductive than the as-deposited films. |
| Databáze: | OpenAIRE |
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