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8611394 
Journal Article 
Cr3+ doped ZnGa2O4 far-red emission phosphor-in-glass: Toward high-power and color-stable plant growth LEDs with responds to all of phytochrome 
Li, MC; Zhang, HR; Zhang, XJ; Deng, JK; Liu, YL; Xia, ZG; Lei, BF 
2018 
1 
Materials Research Bulletin
ISSN: 0025-5408 
108 
226-233 
English 
WOS:000447581100031 
In present work, a series of luminescent glass ceramic plates were prepared via phosphor-in-glass (PiG) technology, in which included the phosphor of ZnGa2O4:Cr3+ (ZGO:Cr3+) and glass host with composition of 30SiO(2)-30ZnO-22B(2)O(3)-12BaO-6Al(2)O(3) as matrix. The structure of ZnGa2O4;Cr3+-based PiG (ZGO:Cr3+-PiG) samples are characterized by powder X-ray diffraction, scanning electron microscope, and energy dispersive spectrometer mapping. These phosphors are found to be embedded in glass matrix without interfacial reaction. In addition, the ZGO:Cr3+-PiG sample shows a quantum efficiency of similar to 52.8% and its fluorescence intensity maintains 68.2% when temperature reaching 150 degrees C. Finally, high-power and color-stable far-red emission plant growth LEDs was fabricated by ZGO:Cr3+-PiG and 400 nm near-UV LED chip, which spectra matches well the absorption of plant's photosynthetic pigments. More importantly, it responds to all of phytochrome, triggering providing broad spectral range for plant growth LEDs. 
Ceramics; ZnGa2O4Cr3+; Color stability; High-power; Plant growing LEDs; ENERGY-TRANSFER PROPERTIES; SHADE AVOIDANCE; PERSISTENT LUMINESCENCE; DEPENDENT LUMINESCENCE; HIGH-BRIGHTNESS; PHOTOSYNTHESIS; REPRESSION; BALANCE