期刊
CERAMICS INTERNATIONAL
卷 48, 期 1, 页码 10-21出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.07.185
关键词
Ternary structure; Intense red emission; Security ink; Latent fingerprint; Thermal stability; BaY2ZnO5; Eu3+
资金
- Anna Centenary Research Fellowship, Anna University, Chennai, Tamil Nadu, India [CFR/ACRF/2017/45]
- Council of Scientific & Industrial Research, New Delhi, India [09/468(0506)/2017-EMR1]
BaY2ZnO5:Eu3+ phosphor shows intense red emission under near UV light excitation and has high emission efficiency, making it suitable for the red component in white light emitting diodes.
Pc-WLEDs are considered to play a spectacular role in future generation light sources in view of their outstanding energy efficiency. In this regard, Eu3+ activated BaY2ZnO5 phosphor was prepared and investigated by XRD, PL and SEM analyses. Rietveld refinement analysis was carried out to confirm the structure of the synthesized phosphor. The prepared phosphor shows an intense red emission around 627 nm under excitation by near UV light. The 5D0-7F2 transition intensity of the prepared phosphor is three times higher compared to the commercial (Y,Gd)BO3:Eu3+ red phosphor. The CIE colour coordinates of BaY2ZnO5:Eu3+ (9mol%) phosphor corresponds to be (0.6169, 0.3742) and it has a high 97.9 % colour purity. The obtained results reveal the utility of BaY2ZnO5: Eu3+ phosphor as an efficient red component in WLEDs, anti-counterfeiting and fingerprint detection applications.
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