High luminescent properties of Eu3+-doped CdSSe quantum dots within silicate glass for WLED

• Published in: Journal of luminescence 2022-12, Vol.252, p.119316, Article 119316
• Main Authors: Xu, Yingwei, Zhang, Yanjie, Lv, Huanlin, Wu, Yiping, Zou, Ailing
• Format: Article
• Language: English
• Subjects: CdSSe; Eu3+ ions; Light-emitting diodes; Quantum dots; Silicate glass
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2022.119316

We have reported that a series concentration of Eu3+ doped CdSSe quantum dots (QDs) within silicate glass has good luminescent properties synthesized via conventional melt-quenching method. The crystal structure and photoluminescence (PL) properties were studied by a field-emission transmission electron microscope (TEM) and fluorescence spectrophotometer, respectively. The results of tests indicated that CdSSe QDs was formed within silicate glass and Eu3+ ions have been successfully doped into CdSSe crystals. Compared with the un-doped CdSSe QDs, the optical properties of Eu3+ doped CdSSe QDs enhanced effectively. After mounted with 395 nm light-emitting diodes (LEDs), the color temperature and color coordinates could be adjusted by turning content of Eu3+ ions. The energy transfer from CdSSe QDs to Eu3+ ions was confirmed by decay life. The main energy transfer mechanism is quadrupole-quadrupole interaction. •Eu3+ ions changes the size and optical properties of CdSSe quantum dots within silicate glass.•The optimum concentration of Eu3+ ions is 1.0 mol% and the CRI reaches 90, the chromaticity coordinates is (0.4083, 0.3855).•The energy transfer from CdSSe QDs to Eu3+ ions is discovered and the mechanism is quadrupole-quadrupole transition.