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Phan Xuan Le
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering

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Non-Proximity as Well as Immediate Tracking for Phosphor Heat Within Phosphor-Transmuted WLED Apparatuses Nguyen Thi Phuong Loan; Phan Xuan Le; Phan Thi Minh Man
Indonesian Journal of Material Research Vol. 4 No. 2 (2026): July
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20264280

Abstract

Phosphor-transmuted white illuminating diode units (ptWLEDs) prove to be an essential illumination means for universal illumination. For balancing the photometrical attributes for ptWLED apparatuses, significant endeavors are still aiming at regulating the thermic abatement for LED colorants. The thermic issues for phosphor components, being a profound dependability trouble in ptWLED apparatuses, continue to be a significant subject for research. The study herein concerns a reliable method capable of assessing phosphor heat within functioning ptWLED via a non-proximity, immediate tracking technique for distantly tracking the discharge spectrum. Usually, infrared cameras or thermocouples would be employed for assessing heat. IR cameras need decent calibrating for discharge and would be typically obstructed via lenses or disparate modules covering phosphor samples. Furthermore, thermocouples need a period for achieving thermic anology among the tracker as well as samples subject to experiment. Said method would be detrimental if employed in intrinsic tracking. The method herein offers benefits surpassing ordinary techniques for non-intrusiveness, non-proximity, immediate as well as intrinsic tracking. Said technique would not be influenced by apex wavelength for pump illumination, the dosage as well as breadth for phosphors as well as correlated chroma heat (CCT).
Degeneration in Phosphor-within-Glass Encasers Featuring Disparate Phosphor forms Applied to High-Powered LED Phan Xuan Le; Nguyen Thi Phuong Loan; Phan Thi Minh Man
Indonesian Journal of Material Research Vol. 4 No. 2 (2026): July
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20264281

Abstract

For supplanting traditional illuminating diode units (LED) made of silicone, non-organic chroma transmuters featuring significant thermic consistency as well as translucency, including phosphor-within-glass (PWG), are examined in the form of encasers applied to high-powered LED apparatuses. The study herein concerns the influence from disparate phosphor forms featuring different chromas (LuAG, silicate, CASN as well as oxynitride) upon the dependability as well as degeneration for separate PWG encasers in the case of high-powered LED apparatuses. Regarding said goal, one glass constitution was individually blended into every phosphor form before undergoing a sintering process under proper heat levels, creating respective PWGs. The dependability in said PWGs underwent examination via conventional quickened aging experiments. Brightness penalties as well as variances for chroma coordinate results from the PWGs underwent assessment prior as well as posterior to aging. Thermic as well as dampness-generated abatement mechanism underwent assessment as well. The exterior for PWGs with disparate phosphor samples degenerated disparately, likely caused by formational inconsistencies among the glass latticework as well as phosphor form. As such, identifying the consistency for the glass constitution alongside the employed phosphor form proves paramount for guaranteeing prolonged consistencies for encasers applied to LED apparatuses in the market.
Co-Authors Nguyen Thi Phuong Loan Phan Thi Minh Man