Inorganic phosphor and method for manufacturing the same
AssigneeNational Chung Cheng University
InventorsYuan-Yao Li, Kuo-Min Lin
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Abstract
An inorganic phosphor and a method for manufacturing the same are proposed. The sol-gel method is used and the elements vanadium and sulfate are added to synthesize a red-emission gadolinium titanium oxide phosphor doped with Eu3+, V and S to change the original red/orange-emission property and enhance the red-emission intensity. Moreover, the elements vanadium and sulfate replace the rare-earth Eu3+ element as active sites to obtain a white-emission gadolinium titanium oxide phosphor doped with V and S. Using this single-kind phosphor, white light can be emitted under the excitation of violet light without the need of mixing multiple colors.
Claims17
An inorganic phosphor with a chemical composition formula of Gd(2-x-y)Ti(2-x-y)O7:Eux, Vy, Sy, where x is between 0.005˜0.05 and y is between 0.03˜0.3.
A method for manufacturing an inorganic phosphor comprising the steps of:
- mixing GdCl3 and TBD to obtain a mixture solution;
- mixing EuCl3 and VOSO4 in said mixture solution to carry out a condensation reaction so as to obtain a phosphor precursor;
- and
- drying, sintering and crystallizing said phosphor precursor into a red-emission gadolinium titanium oxide phosphor doped with Eu3+, V and S.
An inorganic phosphor with a chemical composition formula of Gd(2-x)Ti(2-x)O7:
- Vx, Sx, where x is between 0.005˜0.05.
A method for manufacturing an inorganic phosphor comprising the steps of:
- mixing GdCl3 and TBD to obtain a mixture solution;
- mixing VOSO4 in said mixture solution to carry out a condensation reaction so as to obtain a phosphor precursor;
- and
- drying, sintering and crystallizing said phosphor precursor into a white-emission gadolinium titanium oxide phosphor doped with V and S.
Dependencies are inferred from the claim text.