Zn(BTZ)2 was synthesized from the complex reaction between zinc acetate dihydrate and 2-(2-hydroxy- phenyl) benzothiazolate. Then Zn(BTZ)2 was used as main light-emitting material doped with different amounts of fluor...Zn(BTZ)2 was synthesized from the complex reaction between zinc acetate dihydrate and 2-(2-hydroxy- phenyl) benzothiazolate. Then Zn(BTZ)2 was used as main light-emitting material doped with different amounts of fluorescent dye Rubrene and fabricated a series of white organic light emitting devices. The configurations were as follows: ITO/PVK:TPD/Zn(BTZ)2:Rubrene/Al. The doping concentration of Rubrene in Zn(BTZ)2 was 1.2%, 0.12%, 0.08% and 0.05%, respectively. According to the EL spectra and CIE coordinates of the above devices, the optimum dop- ing concentration (0.05%, weight percent) had been deter- mined. The steady and bright white light emitting of the de- vice with 0.05% doping concentration had been obtained, and the white emission covered a wide range of driving volt- age (10 — 22.5 V). The CIE coordinates were (x=0.341, y=0.334) at the driving voltage of 20 V, which was very close to the equi-energy point (x=0.333, y=0.333), and the corre- sponding luminance and external quantum efficiency were 4048 Cd/m2 and 0.63% (4.05 Cd/A), respectively. Lastly, we also discussed the emitting mechanisms of the material and the devices.展开更多
Eu2+-activated strontium choloro-phosphate has been used for lamp phosphor traditionally with high efficiency. In this paper, the cathodoluminescent properties of Sr5(PO4)3Cl:Eu2+ have been investigated for applicatio...Eu2+-activated strontium choloro-phosphate has been used for lamp phosphor traditionally with high efficiency. In this paper, the cathodoluminescent properties of Sr5(PO4)3Cl:Eu2+ have been investigated for application in field emission display. The influence of Ba2+, Ca2+ impurities on the cathodoluminescent spectrum of Sr5(PO4)3Cl:Eu2+ has also been measured. When operate voltage varied from mid- to low-voltage, the relative brightness and saturation behavior of phosphor was observed at different current density.展开更多
基金This work was financially supported by the National Natural Science Foundation of China(Grant No.60276027)Organic Solids Laboratory of Institute of Chemistry of Chinese Academy of Sciences,Tianjin Natural Science Key Foundation(Grant No.023800511)+2 种基金Tianjin Science Foundation(Grant No.033601211)Tianjin Science Development Foundation for University(Grant No.9903114)the Key Subject of the"Material Physics and the Chemistry"of Tianjin.
文摘Zn(BTZ)2 was synthesized from the complex reaction between zinc acetate dihydrate and 2-(2-hydroxy- phenyl) benzothiazolate. Then Zn(BTZ)2 was used as main light-emitting material doped with different amounts of fluorescent dye Rubrene and fabricated a series of white organic light emitting devices. The configurations were as follows: ITO/PVK:TPD/Zn(BTZ)2:Rubrene/Al. The doping concentration of Rubrene in Zn(BTZ)2 was 1.2%, 0.12%, 0.08% and 0.05%, respectively. According to the EL spectra and CIE coordinates of the above devices, the optimum dop- ing concentration (0.05%, weight percent) had been deter- mined. The steady and bright white light emitting of the de- vice with 0.05% doping concentration had been obtained, and the white emission covered a wide range of driving volt- age (10 — 22.5 V). The CIE coordinates were (x=0.341, y=0.334) at the driving voltage of 20 V, which was very close to the equi-energy point (x=0.333, y=0.333), and the corre- sponding luminance and external quantum efficiency were 4048 Cd/m2 and 0.63% (4.05 Cd/A), respectively. Lastly, we also discussed the emitting mechanisms of the material and the devices.
基金supported by the Key Discipline of Education Committee of Tianjin City,the Foundation of Natural Science of Tianjin City and Education Committee of Tianjin City.
文摘Eu2+-activated strontium choloro-phosphate has been used for lamp phosphor traditionally with high efficiency. In this paper, the cathodoluminescent properties of Sr5(PO4)3Cl:Eu2+ have been investigated for application in field emission display. The influence of Ba2+, Ca2+ impurities on the cathodoluminescent spectrum of Sr5(PO4)3Cl:Eu2+ has also been measured. When operate voltage varied from mid- to low-voltage, the relative brightness and saturation behavior of phosphor was observed at different current density.
