| Autor: |
Yasuhiro Shirahata, Akira Nagaoka, Hideaki Araki, Takashi Kawakubo |
| Zdroj: |
Materials Transactions; 2022, Vol. 63 Issue 10, p1496-1500, 5p |
| Abstrakt: |
Cu-Bi-S powders were synthesized by a polyol method at 180°C and a speed of 600 rpm for 70 min. X-ray diffraction patterns of the Cu-Bi-S powders showed that single-phase Cu3BiS3 was obtained at a thiourea concentration of 197 mmol·L-1. Microstructural analysis of the Cu-B-S powders revealed that the sizes of the Cu-Bi-S particles with single-phase Cu3BiS3 were 200400nm and their composition was Cu-poor, Bi-rich, and slightly S-poor. From the optical measurement by an ultraviolet-visible-near infrared spectroscopy, the optical bandgap of the Cu-B-S powder with single-phase Cu3BiS3 was estimated to be 1.24 eV. Based on the obtained results, the influences of thiourea concentration on synthesis of Cu3BiS3 were discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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