Structural analysis and optical temperature sensing performance of Eu3+-doped Ba3In(PO4)3. Issue 35 (20th August 2020)

• Record Type: Journal Article
• Authors: Zhang, Guangqing; Molokeev, Maxim S.; Ma, Qianchao; Yang, Xuening; Han, Shuiquan; Chen, Qi; Zhong, Binnian; Ma, Bin
• Is Part Of: CrystEngComm. Volume 22:Issue 35(2020)
• Page Start: 5809
• Page End: 5817
• Publication Date: 2020-08-20
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/d0ce00997k
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Eu 3+ -Doped Ba3 In(PO4 )3 was synthesized through a high-temperature solid-phase method. Abstract : Eu 3+ -Doped Ba3 In(PO4 )3 was synthesized through a high-temperature solid-phase method. According to the structure refinement based on X-ray diffraction and density functional theory, the crystal and energy band structures of Ba3 In(1− x ) (PO4 )3 : x Eu 3+ were studied and analyzed in detail. The effect of Eu 3+ doping concentrations on emission was studied at an excitation wavelength of 393 nm. For the material Ba3 In(1− x ) (PO4 )3 : x Eu 3+ ( x = 0.01–0.30), the optimal doping level is confirmed to be 0.18. Due to the thermal quenching differences of Eu 3+ at the 5 D0 and 5 D1 energy levels, and based on the temperature-variable fluorescence intensity ratio between emission peaks, the optical temperature measurement performance of this material in the temperature range from 298.15 K to 623.15 K was characterized, and the maximum absolute and relative sensor sensitivities ( S a and S r ) were determined to be 0.1002 K −1 and 4.058%, respectively. With temperature as the only variable, the color of the phosphor changes from red to yellow light with rising temperature. Besides, S a and S r values of this phosphor are comparable to other sensing materials. The results indicate that Eu 3+ -doped Ba3 In(PO4 )3 phosphors have great potential to be applied in optical temperature sensing.