A Chemical Route Towards Single‐Phase Materials with Controllable Photoluminescence. Issue 39 (15th July 2015)

• Record Type: Journal Article
• Authors: Kaur Behrh, Gaganpreet; Serier‐Brault, Hélène; Jobic, Stéphane; Gautier, Romain
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 39(2015)
• Page Start: 11501
• Page End: 11503
• Publication Date: 2015-07-15
• Subjects: controlled reduction -- dopants -- doped SrAl2O4 -- europium -- photoluminescence; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201504224
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: A promising general approach is proposed that enables the controlled reduction of dopants to tune the photoluminescence properties of single‐phase materials. The change of oxidation state of dopants in phosphor phases leads to different emission colors that can be finely tuned. This approach was illustrated with the progressive reduction of the red phosphor SrAl2 O4 :Eu 3+ to green phosphor SrAl2 O4 :Eu 2+ to target yellow luminescence. Abstract : Color palette : The controlled reduction of dopants at different temperatures was carried out to study the photoluminescent properties of single‐phase oxide materials. The change of the oxidation state of dopants leads to fine tuning of the emission color of the materials. This approach was illustrated with the progressive reduction of the red phosphor SrAl2 O4 :Eu 3+ to green phosphor SrAl2 O4 :Eu 2+ to target yellow luminescence. (Ti, CaH2 =oxygen getters.)