叠层远程荧光薄膜光谱重吸收效应及封装应用
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摘要
以无机绿色和红色荧光粉及有机硅胶为原料,采用高温模压法制备单层和叠层远程荧光薄膜,并结合蓝光板上多芯片光源封装出三种结构的白光LED发光器件(单层型,绿-红叠层型,红-绿叠层型).通过荧光分光光度系统、双积分球系统、可见光光谱系统和光谱照度仪等仪器测试了远程荧光薄膜中荧光粉的光谱重吸收特性和所封装白光LED器件的光色性能,并对机理进行了相应的分析.研究结果表明:远程荧光薄膜中红色荧光粉对绿光光谱产生明显重吸收效应,且透射红光光谱色度坐标移动满足线性关系y=-0.881 6x+0.922 5,R~2=0.998 6;叠层远程荧光薄膜可以明显提高所封装白光LED器件的空间色温均匀性,其中绿-红叠层型、红-绿叠层型和单层型白光LED器件空间色温差值分别为485K、487K和799K,空间各处色温的标准偏差和相对标准偏差分别为173.1、172.3、284.6和0.0373、0.052、0.066,同时绿-红叠层型白光LED器件的辐射发光效率达到三种结构中最高的301.1lm·W~(-1)(@350mA,9.2V).
Single-layer and laminated phosphor films were prepared by high temperature molding method with the using of green and red phosphor as raw materials,then white light emitting diode devices with three different structures(single type,green-red type and red-green type)were packaged with chip on board blue light sources.Based on fluorescence spectrophotometer system,double integral sphere system,the visible spectrum analysis system and spectral color luminance meter,the spectral reabsorption characteristics of phosphor in remote phoaphor film and the photochromic properties of white light emitting diode packaged were studied,and the corresponding mechanisms were analyzed then.The results showed that,the red phosphor in remote phosphor film has obvious reabsorption affection on green spectrum emitted fromgreen phosphor,and the spectral chromaticity coordinates of mobile satisfy linear equations as y=-0.881 6 x+0.922 5,R~2=0.998 6.Laminated film can improve the uniformity of color temperature,the difference of space color temperature of single type,green-red type and red-greentype are 485 K,487 Kand 799 K.And the standard deviation and relative standard deviation of color temperature in space are 173.1,172.3,284.6 and 0.0373,0.052,0.066,respectively,in which the white LED device packaged by green-red type remote phosphor film achieve the highest luminous efficiency of301.1 lm·W~(-1)(@350 mA,9.2 V).
Single-layer and laminated phosphor films were prepared by high temperature molding method with the using of green and red phosphor as raw materials,then white light emitting diode devices with three different structures(single type,green-red type and red-green type)were packaged with chip on board blue light sources.Based on fluorescence spectrophotometer system,double integral sphere system,the visible spectrum analysis system and spectral color luminance meter,the spectral reabsorption characteristics of phosphor in remote phoaphor film and the photochromic properties of white light emitting diode packaged were studied,and the corresponding mechanisms were analyzed then.The results showed that,the red phosphor in remote phosphor film has obvious reabsorption affection on green spectrum emitted fromgreen phosphor,and the spectral chromaticity coordinates of mobile satisfy linear equations as y=-0.881 6 x+0.922 5,R~2=0.998 6.Laminated film can improve the uniformity of color temperature,the difference of space color temperature of single type,green-red type and red-greentype are 485 K,487 Kand 799 K.And the standard deviation and relative standard deviation of color temperature in space are 173.1,172.3,284.6 and 0.0373,0.052,0.066,respectively,in which the white LED device packaged by green-red type remote phosphor film achieve the highest luminous efficiency of301.1 lm·W~(-1)(@350 mA,9.2 V).
引文
[1]LIU Sheng,LUO Xiao-bing.LED packaging for lighting applications design,manufacturing and testing[M].New York:Chemical Industry Press,2011:1-28.
[2]MOTTIER P.LEDs for lighting applications[M].New York:Wiley&Sons,2009:3-11
[3]ZHAI Yong-qing,ZHAO Xin,YANG Shuai,et al.Influence of Bi 3+or Sm3+doping on structure and luminescence properties of NaGd(WO4)2:Eu3+phosphors[J].Chinese Journal of Luminescence,2017,38(8):987-994翟永清,赵鑫,杨帅,等.Bi 3+或Sm3+掺杂对NaGd(WO4)2∶Eu3+荧光粉结构和发光性质的影响[J].发光学报,2017,38(8):987-994
[4]ZHU Yi-ting,NARENDRAN N.Investigation of remote-phosphor white light-emitting diodes with multi-phosphor layers[J].Japanese Journal of Applied Physics,2010,49(10):100203.
[5]JUNTUNEN E,TAPANINEN O,SITOMANIEMI A,et al.Effect of phosphor encapsulant on the thermal resistance of a high-power COB LED module[J].IEEE Transactions on Components,Packaging and Manufacturing Technology,2013,3(7):1148-1154.
[6]YIN Lu-qiao,WENG Fei,SONG Peng,et al.Thermal interact effects of LED chip with YAG phosphor layer[J].Acta Optica Sinica,2014,34(3):258-264.殷录桥,翁菲,宋朋,等.LED芯片与YAG荧光粉的相互热作用[J].光学学报,2014,34(3):258-264.
[7]ZHUO Ning-ze,ZHANG Na,LI Bo-chao,et al.Investigation of photo-chromic properties of remote phosphor film and white light emitting diode mixed with TiO2particles[J].Acta Physica Sinica,2016,65(5):58501.卓宁泽,张娜,李博超,等.TiO2微粒对远程荧光粉膜及白光发光二极管器件光色性能的影响[J].物理学报,2016,65(5):58501.
[8]XIAO Hua,LU Yi-jun,XU Yun-xin,et al.The difference of luminous performance between traditional phosphor packaging LED and remote phosphor LED[J].Chinese Journal of Luminescence,2014,35(1):66-72.肖华,吕毅军,徐云鑫,等.传统白光LED与远程荧光粉白光LED的发光性能比较[J].发光学报,2014,35(1):66-72.
[9]YU Xing-jian,XIE Bin,CHEN Qi,et al.Thermal remote phosphor coating for phosphor-converted white-light-emitting diodes[J].IEEE Transactions on Components Packaging and Manufacturing Technology,2015,5(9):1253-1257.
[10]SONG Y H,JI E K,BAKS H,et al.New design of hybrid remote phosphor with single-layer graphene for application in high-power LEDs[J].Chemical Engineering Journal,2016,287:511-515.
[11]LEEJ S,ARUNKUMAR P,KIM S H,et al.Smart design to resolve spectral overlapping of phosphor-in-glass for high-powered remote-type white light-emitting devices[J].Optical Letters,2014,39(4):762-765.
[12]FUKUI T,KAMON K,TAKESHITA J,et al.Superior illuminant characteristics of color rendering and luminous efficacy in multilayered phosphor conversion white light sources excited by near-ultraviolet Light-Emitting Diodes[J].Japanese Journal of Applied Physics,2009,48(11):112101.
[13]PENG Yang,WANG Sin-min,LI Rui-xin,et al.Luminous efficacy enhancement of ultraviolet-excited white lightemitting diodes through multilayered phosphor-in-glass[J].Applied Optics,2016,55(18):4933-4938.
[14]YING Shang-ping,CHIEN Huan-yu.Effect of reassembled remote phosphor geometry on the luminous efficiency and spectra of white light-emitting diodes with excellent color rendering property[J].IEEE Transactions on Electron Devices,2016,63(3):1117-1121.
[15]YING Shang-ping,SHEN Jian-yu.Concentric ring phosphor geometry on the luminous efficiency of white-light-emitting diodes with excellent color rendering property[J].Optics Letters,2016,41(9):1989-1992.
[16]ERDEM T,NIZAMOGLU S,DEMIR H V.Computational study of power conversion and luminous efficiency performance for semiconductor quantum dot nanophosphors on light-emitting diodes[J].Optics Express,2012,20(3):3275-95.
[2]MOTTIER P.LEDs for lighting applications[M].New York:Wiley&Sons,2009:3-11
[3]ZHAI Yong-qing,ZHAO Xin,YANG Shuai,et al.Influence of Bi 3+or Sm3+doping on structure and luminescence properties of NaGd(WO4)2:Eu3+phosphors[J].Chinese Journal of Luminescence,2017,38(8):987-994翟永清,赵鑫,杨帅,等.Bi 3+或Sm3+掺杂对NaGd(WO4)2∶Eu3+荧光粉结构和发光性质的影响[J].发光学报,2017,38(8):987-994
[4]ZHU Yi-ting,NARENDRAN N.Investigation of remote-phosphor white light-emitting diodes with multi-phosphor layers[J].Japanese Journal of Applied Physics,2010,49(10):100203.
[5]JUNTUNEN E,TAPANINEN O,SITOMANIEMI A,et al.Effect of phosphor encapsulant on the thermal resistance of a high-power COB LED module[J].IEEE Transactions on Components,Packaging and Manufacturing Technology,2013,3(7):1148-1154.
[6]YIN Lu-qiao,WENG Fei,SONG Peng,et al.Thermal interact effects of LED chip with YAG phosphor layer[J].Acta Optica Sinica,2014,34(3):258-264.殷录桥,翁菲,宋朋,等.LED芯片与YAG荧光粉的相互热作用[J].光学学报,2014,34(3):258-264.
[7]ZHUO Ning-ze,ZHANG Na,LI Bo-chao,et al.Investigation of photo-chromic properties of remote phosphor film and white light emitting diode mixed with TiO2particles[J].Acta Physica Sinica,2016,65(5):58501.卓宁泽,张娜,李博超,等.TiO2微粒对远程荧光粉膜及白光发光二极管器件光色性能的影响[J].物理学报,2016,65(5):58501.
[8]XIAO Hua,LU Yi-jun,XU Yun-xin,et al.The difference of luminous performance between traditional phosphor packaging LED and remote phosphor LED[J].Chinese Journal of Luminescence,2014,35(1):66-72.肖华,吕毅军,徐云鑫,等.传统白光LED与远程荧光粉白光LED的发光性能比较[J].发光学报,2014,35(1):66-72.
[9]YU Xing-jian,XIE Bin,CHEN Qi,et al.Thermal remote phosphor coating for phosphor-converted white-light-emitting diodes[J].IEEE Transactions on Components Packaging and Manufacturing Technology,2015,5(9):1253-1257.
[10]SONG Y H,JI E K,BAKS H,et al.New design of hybrid remote phosphor with single-layer graphene for application in high-power LEDs[J].Chemical Engineering Journal,2016,287:511-515.
[11]LEEJ S,ARUNKUMAR P,KIM S H,et al.Smart design to resolve spectral overlapping of phosphor-in-glass for high-powered remote-type white light-emitting devices[J].Optical Letters,2014,39(4):762-765.
[12]FUKUI T,KAMON K,TAKESHITA J,et al.Superior illuminant characteristics of color rendering and luminous efficacy in multilayered phosphor conversion white light sources excited by near-ultraviolet Light-Emitting Diodes[J].Japanese Journal of Applied Physics,2009,48(11):112101.
[13]PENG Yang,WANG Sin-min,LI Rui-xin,et al.Luminous efficacy enhancement of ultraviolet-excited white lightemitting diodes through multilayered phosphor-in-glass[J].Applied Optics,2016,55(18):4933-4938.
[14]YING Shang-ping,CHIEN Huan-yu.Effect of reassembled remote phosphor geometry on the luminous efficiency and spectra of white light-emitting diodes with excellent color rendering property[J].IEEE Transactions on Electron Devices,2016,63(3):1117-1121.
[15]YING Shang-ping,SHEN Jian-yu.Concentric ring phosphor geometry on the luminous efficiency of white-light-emitting diodes with excellent color rendering property[J].Optics Letters,2016,41(9):1989-1992.
[16]ERDEM T,NIZAMOGLU S,DEMIR H V.Computational study of power conversion and luminous efficiency performance for semiconductor quantum dot nanophosphors on light-emitting diodes[J].Optics Express,2012,20(3):3275-95.