Synthesis and Luminescent Properties of Novel Phosphors for White-Light-Emitting Diodes
碩士 === 中原大學 === 化學工程研究所 === 105 === In recent years, white light-emitting diodes (W-LEDs) has become attractions due to their high brightness, environmentally friendly, long lifetime, well energy efficiency, and less power consumption. Therefore, it is considered as a new next generation light sourc...
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ndltd-TW-105CYCU50630152017-08-21T04:03:52Z http://ndltd.ncl.edu.tw/handle/30550910473375542823 Synthesis and Luminescent Properties of Novel Phosphors for White-Light-Emitting Diodes 新穎螢光粉用於白光LED封裝之製備與發光特性研究 Chun-Ting Chen 陳俊廷 碩士 中原大學 化學工程研究所 105 In recent years, white light-emitting diodes (W-LEDs) has become attractions due to their high brightness, environmentally friendly, long lifetime, well energy efficiency, and less power consumption. Therefore, it is considered as a new next generation light source. However, they fail to achieve higher color rendering because of the lack of red component in blending of different color phosphors. Hence, it is necessary to find red emission phosphors for application. In this study, we discussed on two kinds of rare earth ions and successfully synthesized the samples via a high temperature solid state reaction at air atmosphere. The rare earth ion as mentioned in this thesis are europium and samarium, which could emit red and orange-red emission light when excited by n-UV chip or blue LED chip. To further discussion, we used a series of analysis such as X-ray diffraction, crystal structure refinement, photoluminescence (PL) spectra, temperature-dependence photoluminescence (TL) spectra, EL spectra, decay lifetime, diffuse reflection spectra, LED fabrication, CIE coordinate and so on to identify the luminescent properties of NaYPO4F:Eu3+, La5BSi2O13:Eu3+, Ca2Y8(SiO4)6O2:Sm3+ and La6Ba4Si6O24F2:Sm3+ phosphors. Wei-Ren Liu 劉偉仁 2017 學位論文 ; thesis 155 en_US |
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碩士 === 中原大學 === 化學工程研究所 === 105 === In recent years, white light-emitting diodes (W-LEDs) has become attractions due to their high brightness, environmentally friendly, long lifetime, well energy efficiency, and less power consumption. Therefore, it is considered as a new next generation light source. However, they fail to achieve higher color rendering because of the lack of red component in blending of different color phosphors. Hence, it is necessary to find red emission phosphors for application.
In this study, we discussed on two kinds of rare earth ions and successfully synthesized the samples via a high temperature solid state reaction at air atmosphere. The rare earth ion as mentioned in this thesis are europium and samarium, which could emit red and orange-red emission light when excited by n-UV chip or blue LED chip. To further discussion, we used a series of analysis such as X-ray diffraction, crystal structure refinement, photoluminescence (PL) spectra, temperature-dependence photoluminescence (TL) spectra, EL spectra, decay lifetime, diffuse reflection spectra, LED fabrication, CIE coordinate and so on to identify the luminescent properties of NaYPO4F:Eu3+, La5BSi2O13:Eu3+, Ca2Y8(SiO4)6O2:Sm3+ and La6Ba4Si6O24F2:Sm3+ phosphors.
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author2 |
Wei-Ren Liu |
author_facet |
Wei-Ren Liu Chun-Ting Chen 陳俊廷 |
author |
Chun-Ting Chen 陳俊廷 |
spellingShingle |
Chun-Ting Chen 陳俊廷 Synthesis and Luminescent Properties of Novel Phosphors for White-Light-Emitting Diodes |
author_sort |
Chun-Ting Chen |
title |
Synthesis and Luminescent Properties of Novel Phosphors for White-Light-Emitting Diodes |
title_short |
Synthesis and Luminescent Properties of Novel Phosphors for White-Light-Emitting Diodes |
title_full |
Synthesis and Luminescent Properties of Novel Phosphors for White-Light-Emitting Diodes |
title_fullStr |
Synthesis and Luminescent Properties of Novel Phosphors for White-Light-Emitting Diodes |
title_full_unstemmed |
Synthesis and Luminescent Properties of Novel Phosphors for White-Light-Emitting Diodes |
title_sort |
synthesis and luminescent properties of novel phosphors for white-light-emitting diodes |
publishDate |
2017 |
url |
http://ndltd.ncl.edu.tw/handle/30550910473375542823 |
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