Compared with the Effects of Two Measurement Methods on the Luminescent Properties of LED Phosphors
Journal Title: IOSR Journals (IOSR Journal of Electrical and Electronics Engineering) - Year 2017, Vol 12, Issue 3
Abstract
Accurate measurement of LED phosphor performance parameters, the traditional test method commonly used is to use a laser or xenon lamp as an incident light source, which is not only expensive, but also the results are not accurate. While the use of LED chips as its incident light source, is not only cheap, but also closer to the real life of the application. And in practical applications, LED chip and phosphor are usually packaged and measured, but the packaging method is complex, the packaging technology is not advanced, which directly affect the optical performance of white LED.As a result, in this paper, another way with the blue LED chip directly stimulate the phosphor and measure its luminous performance, and comparative analysis of the two different ways, Concluded as follow: When using the blue LED directly stimulate the yellow phosphor test method, the measured phosphor external quantum efficiency and energy efficiency is higher, and the luminous performance of the phosphor is better, and the application of the industry has played a reference role.
Authors and Affiliations
Zhaoyang Zhang, Pingfan Ning
Keywords
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- DOI 10.9790/1676-1203011419.
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