发光学报2016，Vol.37Issue(5)：567-572,6.DOI:10.3788/fgxb20163705.0567
基于静电纺丝工艺的LED远程荧光片制备技术
Fabrication Technology of LED Remote Fluorescent Sheets Based on Electrostatic Spinning Process
摘要
Abstract
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 re-alized 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 prob-lem of uneven distribution of fluorescent powder. The yellow and red fluorescent sheets were pre-pared by electrostatic spinning process. The transmittance, absorption rate, PL spectra of yellow flu-orescent sheet were studied. The effect of red fluorescent sheet on the optical performance parame-ters of white LED, including the luminous flux, correlated color temperature and luminous efficien-cy, 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 flu-orescent sheet can keep high efficiency and decrease the correlated color temperature of the bulbs from 5 595 K to 3 214 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.关键词
静电纺丝/LED远程荧光片/透射率/PL谱/相关色温Key words
electrostatic spinning/LED remote fluorescent sheet/transmittance/PL spectrum/correlated color tem-perature分类
数理科学引用本文复制引用
牛萍娟,薛卫芳,宁平凡,王雪飞,吴英蕾,朱文睿..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):567-572,6.基金项目
天津市自然科学基金(15JCQNJC41800) （15JCQNJC41800）
科技部中小企业发展专项资金(SQ2013ZOA100010)资助项目 （SQ2013ZOA100010）
