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Photoluminescence investigations of sulfur quantum dots synthesized by a bubbling-assisted strategy
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| Title: | Photoluminescence investigations of sulfur quantum dots synthesized by a bubbling-assisted strategy |
| Authors: | Liu, Shuo Browse this author | | Wang, Henggang Browse this author | | Feng, Anrui Browse this author | | Chang, Jianyu Browse this author | | Zhang, Chuanchuan Browse this author | | Shi, Yu-e Browse this author | | Zhai, Yongqing Browse this author | | Biju, Vasudevanpillai Browse this author | | Wang, Zhenguang Browse this author |
| Issue Date: | 20-Jul-2021 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Nanoscale advances |
| Volume: | 3 |
| Issue: | 14 |
| Start Page: | 4271 |
| End Page: | 7275 |
| Publisher DOI: | 10.1039/d1na00282a |
| Abstract: | Sulfur quantum dots (S-dots) emerge as promising luminescent materials owing to their remarkable optical properties. However, the mechanisms of their formation and photoluminescence remain concealed. We reveal these mechanisms by the bubbling-assisted synthesis and spectroscopic study of S-dots formed from sulfur ions produced by the alkaline oxidation of bulk sulfur under the passivation of PEG. The emission colour of the S-dots depends on the size, explained by the quantum confinement effect. The dots' luminescent quantum efficiency is strongly affected by the surface sulfur species, which is optimized by the proper surface oxidation. The simple synthesis, excellent luminescence properties, and metal-free nature attract S-dots to optoelectronic and electroluminescence applications. |
| Rights: | http://creativecommons.org/licenses/by-nc/3.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/82258 |
| Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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