luminescence properties
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2022 ◽  
Vol 124 ◽  
pp. 111703
João Henrique Saska Romero ◽  
Gustavo Pereira Saito ◽  
Flávia Cagnin ◽  
Marco Aurélio Cebim ◽  
Marian Rosaly Davolos

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 646
Peng Jiang ◽  
Zhipeng Li ◽  
Wei Lu ◽  
Yi Ma ◽  
Wenhuai Tian

Developing rare-earth doped oxysulfide phosphors with diverse morphologies has significant value in many research fields such as in displays, medical diagnosis, and information storage. All of the time, phosphors with spherical morphology have been developed in most of the related literatures. Herein, by simply adjusting the pH values of the reaction solution, Gd2O2S:Tb3+ phosphors with various morphologies (sphere-like, sheet-like, cuboid-like, flat square-like, rod-like) were synthesized. The XRD patterns showed that phosphors with all morphologies are pure hexagonal phase of Gd2O2S. The atomic resolution structural analysis by transmission electron microscopy revealed the crystal growth model of the phosphors with different morphology. With the morphological change, the band gap energy of Gd2O2S:Tb3+ crystal changed from 3.76 eV to 4.28 eV, followed by different luminescence performance. The samples with sphere-like and cuboid-like microstructures exhibit stronger cathodoluminescence intensity than commercial product by comparison. Moreover, luminescence of Gd2O2S:Tb3+ phosphors have different emission performance excited by UV light radiation and an electron beam, which when excited by UV light is biased towards yellow, and while excited by an electron beam is biased towards cyan. This finding provides a simple but effective method to achieve rare-earth doped oxysulfide phosphors with diversified and tunable luminescence properties through morphology control.

2022 ◽  
Vol 128 (2) ◽  
Zongliang Xiao ◽  
Jingting Ye ◽  
Bingkui Wu ◽  
Fangzhe Wang ◽  
Jianhang Li ◽  

Jinjuan Du ◽  
Shengrui Xu ◽  
Ruoshi Peng ◽  
Ying Zhao ◽  
Xiaomeng Fan ◽  

2022 ◽  
Vol 576 ◽  
pp. 121251
Xiaoning Guan ◽  
Ru Zhang ◽  
Baonan Jia ◽  
Gang Liu ◽  
Binbin Yan ◽  

RSC Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 420-428
Yingshan Ma ◽  
Suyue Fu ◽  
Yichang Zhao ◽  
Chunjiao Liu ◽  
Leipeng Li ◽  

The tunable emission phosphor was realized by the energy transfer.

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