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《Spectroscopy and Spectral Analysis》 2011-10
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The Property of White Powder LED with Different Ratio of Phosphor

GUO Wei-ling,CUI De-sheng,CUI Bi-feng,YAN Wei-wei,LIU YingKey Laboratory of Opto-electronics Technology(Beijing University of Technology),Ministry of Education,Beijing 100124,China  
White powder light emitting diodes(LED) with different color temperature were made by using different ratio of yellow to orange silicate phosphor.When the ratio of yellow to orange phosphor was less than 7,the peak wavelength of yellow light in spectra was about 570 nm and the wavelength was about 590 nm as the ratio was greater than 7.With the color temperature increasing,the color rendering index and the luminous efficiency increased at the beginning and then decreased.And color temperature of 5 521 K is the optimal value.The reason was the ineffective excitation of blue light due to higher concentration of phosphor and excess red light in spectra.In contrast,blue light was not excited effectively and red light in spectra was little when the color temperature was higher than 5 521 K.The luminous efficiency was decreased,and the decreased magnitude was inconsistency with the testing temperature from 10 to 80 ℃.This suggests that,besides Auger recombination,the decrease in excitation efficiency of yellow and orange phosphors is different as the temperature rises and orange phosphor's temperature characteristic is superior to that of yellow phosphor.
【Fund】: 国家(863计划)项目(2009AA03A1A3);; 国家科技支撑计划项目(2011BAE01B14)资助
【CateGory Index】: TN312.8
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 WANG Hongzhi(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620);Research Developments of Novel Phosphors for High Powder LEDs[J];Materials Review;2010-13
2 SUN Xiao-yuan, ZHANG Jia-hua, ZHANG Xia, LIU Shen-xin, JIANG Da-peng , WANG Xiao-jun (Key Laboratory of Excited State Processes, Chinese Academy of Sciences, Changchun 130033, China);A Single White Phosphor Suitable for Near Ultraviolet Excitation Applied to New Generation White LED Lighting[J];Chinese Journal of Luminescence;2005-03
3 LI Pan-Lai,YANG Zhi-Ping,WANG Zhi-Jun,GUO Qing-Lin(College of Physics Science & Technology,Hebei University,Baoding 071002,China);Preparation and Luminescence Characteristics of Sr_2SiO_4:Dy~(3+) Phosphor[J];Chemical Journal of Chinese Universities;2008-03
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 ZANG Jingcun~1,QI Yang~1,LIU Yanhang~2(1 College of Materials Science and Engineering,Beijing University of Technology,Beijing 100022; 2 College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100022);Solid State Lighting and Rare Earths Phosphors for LED[J];Materials Review;2006-07
2 WANG Deliu,FU Renli,HE Hong,SONG Xiufeng,SHEN Yuan(College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016);Research and Development of Phosphors for White Light Emitting Diode[J];Materials Review;2007-08
3 LI Shaoxia,LI Daji,WANG Yaping,WANG Zhuo (School of Environment and Materials Engineering,Yantai University,Yantai 264005);Study of Light-conversion Materials for White-light LED[J];Materials Review;2008-04
4 ZHANG Shaohua1,ZHOU Mingbin1,HU Jiangfeng1,XIE Bing2(1 School of Material Science and Engineering,Nanchang University,Nanchang 330031;2 Center of Analysis and Testing Nanchang University,Nanchang 330047);Research Progress in Preparation of Single Phase Silicate Phosphor for NUV-white Light Emitting Diodes[J];Materials Review;2009-09
5 ZHANG Dingfei1,TANG An1,YANG Liu2,LI Pengcheng1(1 College of Materials Science and Engineering,Chongqing University,Chongqing 400045;2 Qland Technology Co.,Ltd,Chongqing 400000);Progress Based on Silicate System as White-light Phosphors Used for LED[J];Materials Review;2010-21
6 LI Langkai1,CHEN Yongjie1,XIAO Linjiu1,CAO Fabin1,2,GENG Xiujuan1(1 Key Laboratory of Rare Earth Chemistry and Application of Liaoning Province,Shenyang University of Chemical Technology,Shenyang 110142;2 School of Materials and Metallurgy,Northeastern University,Shenyang 110004);Luminescence Properties of the Full-colour Light Emitting Phosphor BaMgSiO_4∶Eu~(2+),Mn~(2+) for w-LED[J];Materials Review;2010-22
7 LIN Lin1,ZHUANG Guo-hua1,QIU Zhi-hai1,XU Gui-hua1,FENG Zhuo-hong1,ZHENG Zhi-qiang1,YIN Min2(1.School of Physics and OptoElectronics Technology,Fujian Normal University,Fuzhou 350108,China;2.Department of Physics,University of Science and Technology of China,Hefei 230026,China);Luminescence Properties of Phosphor Sr_3MgSi_2O_8:Eu~(2+) for White LEDs[J];Journal of Fujian Normal University(Natural Science Edition);2011-02
8 WANG Gui-mei1,SHI Wei-mei2,JIANG Xiao-fen1,SUN Wei1,GAO Shao-kang1(1.College of Chemistry and Chemical Engineering,Fuzhou University,Fuzhou,Fujian 350108,China)(2.Pharmaceutical College,Gannan Medical University,Ganzhou,Jiangxi 341000,China);Preparation of the single emitting phosphor Sr_3Y_2(GeO_4)_3∶Dy~(3+) and its luminescence property[J];Journal of Fuzhou University(Natural Science Edition);2010-03
9 Zhou Liang,Yun Zhimian,Ye Xiaozhao,Kong Aiqiong(Department of Chemical Engineering,Guangdong Industry Technical College,Guangzhou 510300,China);Research Process on Long After glow Materials and Solid-State Lighting Technique[J];Guangdong Chemical Industry;2008-03
10 Zeng Guiping,Yao Li,Dong Qiang,Bao Weitao (Department of Mathematics and Physics,Hefei University,Hefei 230601,China);Spectroscopic Properties of Y_2O_3:Ti~(3+),Pr~(3+)Nanopowders[J];Guangdong Chemical Industry;2010-07
China Proceedings of conference Full-text Database 1 Hits
1 ;Eu~(2+),Mn~(2+)共激活的白光LED用单一基质荧光粉研究进展[A];[C];2009
【Secondary Citations】
Chinese Journal Full-text Database 1 Hits
1 GU Yun-xin1,WANG Hong-zhi1,LI Yao-gang1,XIE Rong-jun2(1.College of Material Science and Engineering,Donghua University,Shanghai 200050,China;2.Nano Ceramics Center,National Institute for Materials Science,Namiki 1-1,Tsukuba,Ibaraki 305-0044,Japan);Luminescence Properties of Eu~(2+)-doped CaSi_2O_2N_2 Phosphors[J];Chinese Journal of Luminescence;2008-04
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