False luminescence of molybdenum disulfide quantum dots from carbon dots

For the first time, a systematical investigation has been carried out to verify luminescent molybdenum disulfide quantum dots (MoS 2 QDs). We found that the well-reported blue fluorescence of the so-called "MoS 2 QDs" is mainly originated from the co-present carbon based dots rather than M...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2022-06, Vol.58 (51), p.718-7183
Hauptverfasser: Fu, Xiaolong, Huang, Ju, Zhu, Xiajun, Rong, Jiefeng, Lin, Zhenyu, Dong, Yongqiang, Fu, Fengfu
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Sprache:eng
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Zusammenfassung:For the first time, a systematical investigation has been carried out to verify luminescent molybdenum disulfide quantum dots (MoS 2 QDs). We found that the well-reported blue fluorescence of the so-called "MoS 2 QDs" is mainly originated from the co-present carbon based dots rather than MoS 2 . Furthermore, the band gap of MoS 2 is independent of the lateral size, and it is impossible to obtain luminescent MoS 2 QDs by reducing the lateral size. A systematical investigation has been carried out for the first time to prove that there are no luminescent molybdenum disulfide quantum dots.
ISSN:1359-7345
1364-548X
DOI:10.1039/d2cc01782b