The Effect of Temperature on the PL Spectra of High Power LED - 文章详情页

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摘要：

Two　kinds　of　1　W　white　high　power　light　emitting　diode　(LED)　were　made　by　packaging　blue　chips　from　Taiwan　and　US.　The　chips　were　coated　by　the　same　phosphor　and　transparent　silica　gel.　Optical　properties　of　the　two　kinds　of　LEDs　were　investigated　in　the　temperature　range　of　15　similar　to　75　degrees　C　and　at　the　current　of　350　mA.　The　results　show　that　temperature　badly　affects　the　optical　parameters　such　as　peak　wavelength,　radiant　flux,　color　temperature　and　so　on.　After　analyzing　the　PL　spectrum,　the　relationship　between　temperature　and　LED　performance　was　found.　The　reasons　for　optical　parameters　vs.　temperature　were　theoretically　analyzed.　Some　suggestions　were　given　to　reduce　the　influence　of　temperature　on　power　LED.

关键词：

Color temperature Radiant flux Spectrum Light emitting diode Temperature Peak wavelength

作者机构：

[ 1 ] [Ding Tian-ping]Beijing Univ Technol, Key Lab Optoelect Technol, Minist Educ, Beijing 100124, Peoples R China
[ 2 ] [Guo Wei-ling]Beijing Univ Technol, Key Lab Optoelect Technol, Minist Educ, Beijing 100124, Peoples R China
[ 3 ] [Cui Bi-feng]Beijing Univ Technol, Key Lab Optoelect Technol, Minist Educ, Beijing 100124, Peoples R China
[ 4 ] [Yin Fei]Beijing Univ Technol, Key Lab Optoelect Technol, Minist Educ, Beijing 100124, Peoples R China
[ 5 ] [Cui De-sheng]Beijing Univ Technol, Key Lab Optoelect Technol, Minist Educ, Beijing 100124, Peoples R China
[ 6 ] [Yan Wei-wei]Beijing Univ Technol, Key Lab Optoelect Technol, Minist Educ, Beijing 100124, Peoples R China

通讯作者信息：

[Guo Wei-ling]Beijing Univ Technol, Key Lab Optoelect Technol, Minist Educ, Beijing 100124, Peoples R China

电子邮件地址：

terry.dtp@emails.bjut.edu.cn |
guoweiling@bjut.edu.cn

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