Up-conversion luminescence and temperature-sensing properties of Li+, K+ doped Na2Zn3Si2O8: Er3+ phosphors. Issue 11 (1st June 2022)

• Record Type: Journal Article
• Authors: Jilili, Subiyinuer; Aierken, Palidan; Qingling, Wang; Tuerxun, Ayinuremu; Lei, Wang; Sidike, Aierken
• Is Part Of: Ceramics international. Volume 48:Issue 11(2022)
• Page Start: 15755
• Page End: 15761
• Publication Date: 2022-06-01
• Subjects: Na2Zn3Si2O8: Er3+ -- Li+ -- K+ phosphors -- Luminescence -- Up-conversion -- Optical temperature measurement; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.02.112
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this work we detail the preparation of new luminescent Li + and K + doped Na2 Zn3 Si2 O8 : Er 3+ up-conversion phosphors using the high-temperature solid-phase method. We investigate the phosphors phase structure, elemental distribution, up-conversion luminescence characteristics and temperature sensing properties. Our fabricated samples were found to be homogeneous and when excited using 980 nm light, they emitted wavelengths in the green and red visible wavelength bands, which correspond to two major emission bands of Er 3+ . Doping with Li + and K + increased the luminescence intensity of the Na2 Zn3 Si2 O8 : Er 3+ phosphor at 661 nm by 36 and 21 times respectively. The highest relative temperature sensitivity (Sa) of the fabricated phosphor reached a value of 19.69% K −1 and the highest absolute temperature sensitivity (Sr) reached 1.20% K −1 . These values are superior to other materials which utilize up-conversion by Er 3+ ions as a tool for temperature sensing. We anticipate that these new phosphors will find significant application as components in optical temperature measurement systems.