Stability and luminescence properties of CsPbBr3/CdSe/Al core-shell quantum dots |
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| Affiliation: | 1.Guizhou Province Key Laboratory for Photoelectric Technology and Application, Guizhou University, Guiyang 550025, China;2.College of Medicine, Guizhou University, Guiyang 550025, China |
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| Abstract: | To improve the stability and luminescence properties of CsPbBr3 QDs, we proposed a new core-shell structure for CsPbBr3/CdSe/Al quantum dots (QDs). By using a simple method of ion layer adsorption and a reaction method, CdSe and Al were respectively packaged on the surface of CsPbBr3 QDs to form the core-shell CsPbBr3/CdSe/Al QDs. After one week in a natural environment, the photoluminescence quantum yields of CsPbBr3/CdSe/Al QDs were greater than 80%, and the PL intensity remained at 71% of the original intensity. Furthermore, the CsPbBr3/CdSe/Al QDs were used as green emitters for white light-emitting diodes (LEDs), with the LEDs spectrum covering 129% of the national television system committee (NTSC) standard color gamut. The core-shell structure of QDs can effectively improve the stability of CsPbBr3 QDs, which has promising prospects in optoelectronic devices. |
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| Keywords: | luminescence properties stability CsPbBr3/CdSe/Al quantum dots (QDs) CsPbBr3 QDs |
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