Synthesis and characterization of ultraviolet-emitting cerium-ion-doped SrBPO5 phosphors

2004 ◽  
Vol 19 (8) ◽  
pp. 2336-2342 ◽  
Author(s):  
Chung-Hsin Lu ◽  
S.V. Godbole
Keyword(s):  
Charge Compensation ◽  
Radiative Energy ◽  
Reducing Atmosphere ◽  
Radiative Energy Transfer ◽  
Strontium Borate ◽  
Local Charge ◽  
Monovalent Ions ◽  
Cerium Ion ◽  
Local Charge Compensation

The synthesis and characteristics of strontium borate phosphate phosphors doped with cerium ions were investigated in this study. The synthesis of Sr0.95Ce0.05BPO5 in oxidizing atmosphere results in partial conversion of Ce4+ ions into Ce3+ ions. The luminescent characteristics reveal that Ce3+ ions occupy two principal sites in the host. The dominant emission at 317 nm on 275-nm excitation is attributed to Ce3+ ions located at Sr2+ sites without local charge compensation. The weak emission at 330 nm due to 295-nm excitation is ascribed to Ce3+ ions located at Sr2+ sites in association with charge compensatory vacancy. The reduction of Ce4+ ions to Ce3+ ions occurs in Sr0.95Ce0.05BPO5 heated in the reducing atmosphere. For Sr0.9Ce0.05Na0.05BPO5 and Sr0.9Ce0.05Li0.05BPO5 phosphors, enhancement in luminescence is observed due to the codoping of monovalent ions. The increased luminescence of these phosphors is attributed to the decrease in non-radiative energy transfer.

Colouration, impurities and non-local charge-compensation in ZnWO4

1993 ◽  
Vol 88 (8) ◽  
pp. 619-621 ◽  
Author(s):  
A. Watterich ◽  
O.R. Gilliam ◽  
L.A. Kappers
Keyword(s):  
Charge Compensation ◽  
Local Charge ◽  
Non Local ◽  
Local Charge Compensation

Advantages of a Local Charge Compensation System for FIB/SEM Applications on Insulating Materials

2009 ◽  
Vol 15 (S2) ◽  
pp. 332-333
Author(s):  
H Schulz ◽  
U Zeile ◽  
JP Stodolka ◽  
D Kraft
Keyword(s):  
Charge Compensation ◽  
Compensation System ◽  
Insulating Materials ◽  
Local Charge ◽  
Local Charge Compensation

Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – July 30, 2009

Long persistent composite phosphor CaAl2O4:Eu2+,Nd3+/Y3Al5O12:Ce3+: a novel strategy to tune the colors of persistent luminescence

2016 ◽  
Vol 40 (1) ◽  
pp. 485-491 ◽  
Author(s):  
Wenbo Chen ◽  
Yuhua Wang ◽  
Wei Zeng ◽  
Shaochun Han ◽  
Gen Li ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Radiative Energy ◽  
Persistent Luminescence ◽  
Radiative Energy Transfer ◽  
Color Tunable ◽  
Novel Strategy

The design and characterization of a novel color tunable long persistent composite phosphor through radiative energy transfer.

A key discovery at the TiO2/dye/electrolyte interface: slow local charge compensation and a reversible electric field

2015 ◽  
Vol 17 (26) ◽  
pp. 16744-16751 ◽  
Author(s):  
Wenxing Yang ◽  
Meysam Pazoki ◽  
Anna I. K. Eriksson ◽  
Yan Hao ◽  
Gerrit Boschloo
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
Absorption Spectroscopy ◽  
Dye Sensitized Solar Cells ◽  
Charge Compensation ◽  
Dye Sensitized ◽  
Local Charge ◽  
Surface Electric Field ◽  
Sensitized Solar Cells ◽  
Local Charge Compensation

Photo-induced absorption spectroscopy on dye-sensitized solar cells reveals reversible electron-induced cation adsorption at the TiO2 surface, resulting in changes of the surface electric field.

Theoretical study of the local charge compensation and spectroscopic properties of B-type carbonate defects in apatite

2014 ◽  
Vol 41 (5) ◽  
pp. 347-359 ◽  
Author(s):  
Haohao Yi ◽  
Etienne Balan ◽  
Christel Gervais ◽  
Loïc Ségalen ◽  
Marc Blanchard ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Charge Compensation ◽  
Spectroscopic Properties ◽  
Local Charge ◽  
Local Charge Compensation
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