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Article: Dynamic Optical Power Measurements and Modeling of Light-Emitting Diodes Based on a Photodetector System and Photo-Electro-Thermal Theory

TitleDynamic Optical Power Measurements and Modeling of Light-Emitting Diodes Based on a Photodetector System and Photo-Electro-Thermal Theory
Authors
KeywordsPassive LED systems
Photo-detector systems
Photo-electro-thermal theory for LED systems
Issue Date2019
PublisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=63
Citation
IEEE Transactions on Power Electronics, 2019, v. 34 n. 10, p. 10058-10068 How to Cite?
AbstractOptical measurements based on integrating sphere are primary suitable for steady-state measurements and unsuitable for dynamic real-time measurements. This paper presents an alternative method using the combination of a photodetector system and the dynamic photo-electro-thermal theory for real-time optical measurements. It is demonstrated that the voltage output of a photodetector can be correlated to the optical power in real time. Such method has been successfully applied to analyze a phosphor-converted white light-emitting diode (PC white LED) using an extended dynamic model with separate calculations of optical power from the blue LED chips and phosphor layer. Both calculated and practical results are included to confirm the validity of the new method.
Persistent Identifierhttp://hdl.handle.net/10722/272176
ISSN
2023 Impact Factor: 6.6
2023 SCImago Journal Rankings: 3.644
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, H-
dc.contributor.authorLee, ATL-
dc.contributor.authorTan, SC-
dc.contributor.authorHui, SY-
dc.date.accessioned2019-07-20T10:37:10Z-
dc.date.available2019-07-20T10:37:10Z-
dc.date.issued2019-
dc.identifier.citationIEEE Transactions on Power Electronics, 2019, v. 34 n. 10, p. 10058-10068-
dc.identifier.issn0885-8993-
dc.identifier.urihttp://hdl.handle.net/10722/272176-
dc.description.abstractOptical measurements based on integrating sphere are primary suitable for steady-state measurements and unsuitable for dynamic real-time measurements. This paper presents an alternative method using the combination of a photodetector system and the dynamic photo-electro-thermal theory for real-time optical measurements. It is demonstrated that the voltage output of a photodetector can be correlated to the optical power in real time. Such method has been successfully applied to analyze a phosphor-converted white light-emitting diode (PC white LED) using an extended dynamic model with separate calculations of optical power from the blue LED chips and phosphor layer. Both calculated and practical results are included to confirm the validity of the new method.-
dc.languageeng-
dc.publisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=63-
dc.relation.ispartofIEEE Transactions on Power Electronics-
dc.subjectPassive LED systems-
dc.subjectPhoto-detector systems-
dc.subjectPhoto-electro-thermal theory for LED systems-
dc.titleDynamic Optical Power Measurements and Modeling of Light-Emitting Diodes Based on a Photodetector System and Photo-Electro-Thermal Theory-
dc.typeArticle-
dc.identifier.emailLee, ATL: tlalee@hku.hk-
dc.identifier.emailTan, SC: sctan@eee.hku.hk-
dc.identifier.emailHui, SY: ronhui@eee.hku.hk-
dc.identifier.authorityTan, SC=rp01606-
dc.identifier.authorityHui, SY=rp01510-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/TPEL.2018.2890727-
dc.identifier.scopuseid_2-s2.0-85068692181-
dc.identifier.hkuros298572-
dc.identifier.volume34-
dc.identifier.issue10-
dc.identifier.spage10058-
dc.identifier.epage10068-
dc.identifier.isiWOS:000474581900058-
dc.publisher.placeUnited States-
dc.identifier.issnl0885-8993-

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