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1. 天津工业大学 电气工程与自动化学院 天津,300387
2. 天津工业大学 电子与信息工程学院 天津,300387
3. 天津工业大学 大功率半导体照明应用系统教育部工程研究中心 天津,300387
纸质出版日期:2016-5-5,
收稿日期:2015-11-18,
修回日期:2016-3-10,
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牛萍娟, 薛卫芳, 宁平凡等. 基于静电纺丝工艺的LED远程荧光片制备技术[J]. 发光学报, 2016,37(5): 567-572
NIU Ping-juan, XUE Wei-fang, NING Ping-fan etc. Fabrication Technology of LED Remote Fluorescent Sheets Based on Electrostatic Spinning Process[J]. Chinese Journal of Luminescence, 2016,37(5): 567-572
牛萍娟, 薛卫芳, 宁平凡等. 基于静电纺丝工艺的LED远程荧光片制备技术[J]. 发光学报, 2016,37(5): 567-572 DOI: 10.3788/fgxb20163705.0567.
NIU Ping-juan, XUE Wei-fang, NING Ping-fan etc. Fabrication Technology of LED Remote Fluorescent Sheets Based on Electrostatic Spinning Process[J]. Chinese Journal of Luminescence, 2016,37(5): 567-572 DOI: 10.3788/fgxb20163705.0567.
首次提出了一种基于静电纺丝工艺以柔性PET为基底的新型LED远程荧光片的制备方法
实现了蓝色LED芯片与荧光粉层相分离的免封装器件结构。采用静电纺丝工艺制备了黄色荧光片和红色荧光片
并研究了黄色荧光片的透射率、吸收率、PL谱及红色荧光片对白光LED的光学性能参数的影响
包括光通量、相关色温、光效。实验结果表明
所制备黄色荧光片在可见光波段具有良好的透光性
荧光片的光谱完全由荧光粉来决定
不需要考虑复杂工艺的影响;使用红色荧光片可以在保持高光效的同时将球泡灯的相关色温由5595 K降低为3214 K
这在曲面发光及色温调节方面为灯具设计提供了广阔的空间。
A new method of preparing the LED remote fluorescent sheet based on the electrostatic spinning process with flexible PET substrate is proposed
and the free package device structure is realized by separating the blue chip and the phosphor layer. Electrostatic spinning process is a new technology to prepare fluorescent sheet with high performance
which can effectively solve the problem of uneven distribution of fluorescent powder. The yellow and red fluorescent sheets were prepared by electrostatic spinning process. The transmittance
absorption rate
PL spectra of yellow fluorescent sheet were studied. The effect of red fluorescent sheet on the optical performance parameters of white LED
including the luminous flux
correlated color temperature and luminous efficiency
was also studied. Experimental results show that the prepared yellow fluorescent sheets have good light transmission in the visible band. Fluorescent spectrum is completely determined by the fluorescent powder
so we do not need to consider the influence of complex processes. Using red fluorescent sheet can keep high efficiency and decrease the correlated color temperature of the bulbs from 5595 K to 3214 K at the same time
which provides more chance for the design of lamps and lanterns in luminescence of curved surface and regulation of color temperature. With the continuous improvement of the technology
the remote fluorescent technology based on the electrostatic spinning process will be more perfect
the performance of the product will be further improved
and the pace of the white LED going into the lighting field is promoted.
静电纺丝LED远程荧光片透射率PL谱相关色温
electrostatic spinningLED remote fluorescent sheettransmittancePL spectrumcorrelated color temperature
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李亮,金尚忠,岑松原,等. 荧光粉浓度和电流强度对白光LED特性的影响[J]. 激光与光电子学进展, 2012, 49(3):032301-1-6. LI L, JIN S Z, CEN S Y, et al.. Influence of phosphor concentration and current intensity on phosphor-based white led characteristics[J]. Laser Optoelectron. Prog., 2012, 49(3):032301-1-6. (in Chinese)
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陈钟文,袁波,陈小平,等. LED集成封装的研究现状[J]. 照明工程学报, 2013, 24(3):77-80. CHEN Z W, YUAN B, CHEN X P, et al.. Research status of LED integrated package[J]. China Illumin. Eng. J., 2013, 24(3):77-80. (in Chinese)
田俊,杨峻,王海波. 大功率LED热管散热器研究[J]. 照明工程学报, 2013, 24(2):44-48. TIAN J, YANG J, WANG H B. Study of high power LED heat pipe radiator[J]. China Illumin. Eng. J., 2013, 24(2):44-48. (in Chinese)
晏建宇,王双喜,刘高山,等. 大功率LED散热技术研究进展[J]. 照明工程学报, 2013, 24(5):84-89. YAN J Y, WANG S X, LIU G S, et al.. Research progress of high power LED heat dissipation technology[J]. China Illumin. Eng. J., 2013, 24(5):84-89. (in Chinese)
KANG D Y, WU E B, WANG D M. Modeling white light-emitting diodes with phosphor layers[J]. Appl. Phys. Lett., 2006, 89(23):231102-1-3.
PARK S C, RHEE I, KIM J Y, et al.. Luminous efficiency of open remote phosphor-converted white light-emitting diodes[J]. J. Korean Phys. Soc., 2012, 60(7):1191-1195.
XIAO H, LU Y J, SHIH T M, et al.. Improvements on remote diffuser-phosphor-packaged light-emitting diodes systems[J]. Photon. J. IEEE, 2014, 6(2):1-8.
LIN M T, YING S P, LIN M Y, et al.. Ring remote phosphor structure for phosphor-converted white LEDs[J]. Photonics Technology Letters, IEEE, 2010, 22(8):574-576.
THERON S A, YARIN A L, ZUSSMAN E, et al.. Multiple jets electrostatic spinning experiment and modeling[J]. Polymer, 2005, 46(9):2889-2899.
KIN G H, CHO Y, KIN W D. Stability analysis formulti-jets electrostatic spinning process modified with a cylindrical electrode[J]. Eur. Polym. J., 2006, 42(9):2031-2038.
THOMPSON C J, CHASE G G, YARIN A L. Effects of parameters on nanometer fiber diameter determined from electrostatic spinning model[J]. Polymer, 2007, 48(23):6913-6922.
YU J, QIU Y, ZHA X, et al.. Production of aligned helical polymer nanometer fibers by electrostatic spinning[J]. Eur. Polym. J., 2008, 44(9):2838-2844.
伏振兴,刘碧蕊. La1-xYO3:xPr3+荧光粉的溶液燃烧法合成及发光特性[J]. 光子学报, 2015, 44(8):0816003-1-4. FU Z X, LIU B R. Synthesis by solution combustion method and luminescence properties of La1-xYO3:xPr3+ phosphor[J]. Acta Photon. Sinica, 2015, 44(8):0816003-1-4. (in Chinese)
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