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Low-Yellowing Phosphor-in-Glass for High-Power Chip-on-board White LEDs by Optimizing a Low-Melting Sn-P-F-O Glass Matrix

Autor: Hee Chang Yoon, Kouhara Yoshihiro, Heeyeon Yoo, Seung Woo Lee, Ji Hye Oh, Young Rag Do

Publikováno v: Scientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)

Abstract We introduce a low-melting-point (MP) Sn-P-F-O glass ceramic material into the phosphor-in-glass (PIG) material to realize an ‘on-chip’ chip-on-board (COB) type of phosphor-converted (pc) white light-emitting diode (WLED) with green (BaS

Externí odkaz: https://doaj.org/article/27d4c66626594916a64db4b8e09df72a

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Sn–P–F containing glass matrix for the fabrication of phosphor-in-glass for use in high power LEDs

Autor: Young Rag Do, Sang Jun Park, Ji Hye Oh, Yoshihiro Kouhara, Heeyeon Yoo, Hee Chang Yoon

Publikováno v: RSC Advances. 6:111640-111647

In this study, we introduce a low-melting-point (MP) glass ceramic (GlaC) material which can be used to fabricate a phosphor-in-glass (PiG) with Y3Al5O12:Ce3+ (YAG) phosphor for the realization of high-power white-light-emitting diodes (WLEDs). PiG u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc198fe937dbbc8794441afed10cbe5f
https://doi.org/10.1039/c6ra23294a

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Quantum Dots: Highly Efficient Green ZnAgInS/ZnInS/ZnS QDs by a Strong Exothermic Reaction for Down-Converted Green and Tripackage White LEDs (Adv. Funct. Mater. 4/2017)

Autor: Ji Hye Oh, Hee Chang Yoon, Heesun Yang, Young Rag Do, Heeyeon Yoo, Minji Ko

Publikováno v: Advanced Functional Materials. 27

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0bcd2259867277bb6a6b559020e92dae
https://doi.org/10.1002/adfm.201770019

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Analysis of circadian properties and healthy levels of blue light from smartphones at night

Autor: Young Rag Do, Hoo Keun Park, Heeyeon Yoo, Ji Hye Oh

Publikováno v: Scientific Reports
SCIENTIFIC REPORTS(5)

This study proposes representative figures of merit for circadian and vision performance for healthy and efficient use of smartphone displays. The recently developed figures of merit for circadian luminous efficacy of radiation (CER) and circadian il

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e4546aac007bad733436d00ae7e9909
https://doi.org/10.1038/srep11325

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Synthesis and characterization of green Zn-Ag-In-S and red Zn-Cu-In-S quantum dots for ultrahigh color quality of down-converted white LEDs

Autor: Hee Chang Yoon, Ji Hye Oh, Young Rag Do, Minji Ko, Heeyeon Yoo

Publikováno v: ACS applied materialsinterfaces. 7(13)

Eco-friendly green Zn-Ag-In-S (ZAIS) and red Zn-Cu-In-S (ZCIS) core/shell-like alloyed quantum dots (QDs) have been synthesized by a facile hot-injection method with a multiple injection approach. Broad full-width at half-maximum (fwhm) of the photol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4664e5399a3d9390d6c57f9e3bfbf007
https://pubmed.ncbi.nlm.nih.gov/25781889

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Highly Efficient Green ZnAgInS/ZnInS/ZnS QDs by a Strong Exothermic Reaction for Down-Converted Green and Tripackage White LEDs

Autor: Heesun Yang, Hee Chang Yoon, Minji Ko, Ji Hye Oh, Young Rag Do, Heeyeon Yoo

Publikováno v: Advanced Functional Materials. 27:1602638

Highly efficient bright green-emitting ZnAgInS (ZAIS)/ZnInS (ZIS)/ZnS alloy core/inner-shell/shell quantum dots (QDs) are synthesized using a multistep hot injection method with a highly concentrated zinc acetate dihydrate precursor. ZAIS/ZIS/ZnS QD

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::08bfbdf7f5e6ef3b43390a1df018c317
https://doi.org/10.1002/adfm.201602638

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