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Article: InGaN RGB Light-emitting Diodes with Monolithically-Integrated Photodetectors for Stabilizing Color Chromaticity

TitleInGaN RGB Light-emitting Diodes with Monolithically-Integrated Photodetectors for Stabilizing Color Chromaticity
Authors
KeywordsColor
Light emitting diodes
System-on-chip
Lighting
Photoconductivity
Issue Date2020
PublisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=41
Citation
IEEE Transactions on Industrial Electronics, 2020, v. 67 n. 6, p. 5154-5160 How to Cite?
AbstractA solution towards realizing color chromaticity stabilized InGaN RGB light-emitting diode (LED) is proposed and demonstrated. The InGaN/GaN MQWs play a key role in light emission from the LEDs and photodetection from the photodetectors (PDs). The spectral overlaps between the emission and absorption spectra are measured and the photocurrents of the PDs exhibit linear behavior with increasing LED driving currents. The solution involves the use of RGB chips with monolithically-integrated PDs that detect the levels of light output from an individual chip in real-time, whose photocurrent signals are fed to LED driver circuits that make use of the signal to provide a driving current that stabilizes the light output. Adoption of this feedback strategy results in CIE coordinates drifts of $Delta$ (0.003, 0.005) over the 400-hr duration of testing, proving to be an effective way of stabilizing color chromaticity from RGB LEDs.
Persistent Identifierhttp://hdl.handle.net/10722/272899
ISSN
2019 Impact Factor: 7.515
2015 SCImago Journal Rankings: 3.285

 

DC FieldValueLanguage
dc.contributor.authorLi, KH-
dc.contributor.authorCheung, YF-
dc.contributor.authorJin, W-
dc.contributor.authorFu, WY-
dc.contributor.authorLee, ATL-
dc.contributor.authorTan, SC-
dc.contributor.authorHui, SY-
dc.contributor.authorChoi, HW-
dc.date.accessioned2019-08-06T09:18:40Z-
dc.date.available2019-08-06T09:18:40Z-
dc.date.issued2020-
dc.identifier.citationIEEE Transactions on Industrial Electronics, 2020, v. 67 n. 6, p. 5154-5160-
dc.identifier.issn0278-0046-
dc.identifier.urihttp://hdl.handle.net/10722/272899-
dc.description.abstractA solution towards realizing color chromaticity stabilized InGaN RGB light-emitting diode (LED) is proposed and demonstrated. The InGaN/GaN MQWs play a key role in light emission from the LEDs and photodetection from the photodetectors (PDs). The spectral overlaps between the emission and absorption spectra are measured and the photocurrents of the PDs exhibit linear behavior with increasing LED driving currents. The solution involves the use of RGB chips with monolithically-integrated PDs that detect the levels of light output from an individual chip in real-time, whose photocurrent signals are fed to LED driver circuits that make use of the signal to provide a driving current that stabilizes the light output. Adoption of this feedback strategy results in CIE coordinates drifts of $Delta$ (0.003, 0.005) over the 400-hr duration of testing, proving to be an effective way of stabilizing color chromaticity from RGB LEDs.-
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=41-
dc.relation.ispartofIEEE Transactions on Industrial Electronics-
dc.rightsIEEE Transactions on Industrial Electronics. Copyright © Institute of Electrical and Electronics Engineers.-
dc.rights©20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.-
dc.subjectColor-
dc.subjectLight emitting diodes-
dc.subjectSystem-on-chip-
dc.subjectLighting-
dc.subjectPhotoconductivity-
dc.titleInGaN RGB Light-emitting Diodes with Monolithically-Integrated Photodetectors for Stabilizing Color Chromaticity-
dc.typeArticle-
dc.identifier.emailLi, KH: khei@HKUCC-COM.hku.hk-
dc.identifier.emailCheung, YF: yukfaira@hku.hk-
dc.identifier.emailFu, WY: wyfu@hku.hk-
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.emailChoi, HW: hwchoi@hku.hk-
dc.identifier.authorityLi, KH=rp02142-
dc.identifier.authorityTan, SC=rp01606-
dc.identifier.authorityHui, SY=rp01510-
dc.identifier.authorityChoi, HW=rp00108-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/TIE.2019.2926038-
dc.identifier.scopuseid_2-s2.0-85079756597-
dc.identifier.hkuros300286-
dc.identifier.volume67-
dc.identifier.issue6-
dc.identifier.spage5154-
dc.identifier.epage5160-
dc.publisher.placeUnited States-

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