期刊
JOURNAL OF LUMINESCENCE
卷 208, 期 -, 页码 18-23出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2018.12.023
关键词
Copper gallium sulfide (Cu-Ga-S); Quantum dots (QDs); White light-emitting diodes (WLED); Emission
类别
资金
- National Natural Science Foundation of China [51671183, 51502294, 51471162]
- CAS/SAFEA International Partnership Program for Creative Research Teams
The Cu-Ga-S/ZnS quantum dots (QDs) emitting green-to-red light are successfully synthesized by the conventional hot-injection method. In the preparation process, 1-dodecanethiol (DDT) is not only used as the solvent but also the sulfur precursor and ligand. Therefore, all reactants are additives, which can reduce solution contamination. The peak wavelength of Cu-Ga-S/ZnS QDs' emission can be tuned from 520 to 619 nm by changing Cu/Ga stoichiometry. And these quantum dots have narrow full-width at half maximum wavelength of about 75 nm. Furthermore, a white quantum-dot-based light-emitting diode is obtained by depositing the yellow Cu-Ga-S QDs on a blue InGaN chip.
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