A new deluxe fluorescent lamp with a color rendering index of 99

Murakami, Katsuo; Narita, Jiro; Anzai, Yoshinori; Itoh, Hiroshi; Doi, Sadaharu; Awazu, Kenzo

doi:10.2150/jlve.3.1_6

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…Sr 6 BP 5 O 20 phosphor was first reported by Murakami et al [20] as a boron-substituted Sr 2 P 2 O 7 with a composition 2SrO, 0.84P 2 O 5 , and 0.16B 2 O 3 . The material was described in the tetragonal crystal system with a ¼6.92Å and c¼ 9.51Å.…”

Section: Xrd Patterns Of X 6 Alp 5 O 20 (Where X ¼Sr/ba/ca/mg) New Mamentioning

confidence: 97%

Synthesis of novel Dy3+ activated phosphate phosphors for NUV excited LED

Shinde¹,

Dhoble

Kumar

2011

Journal of Luminescence

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Section: Xrd Patterns Of X 6 Alp 5 O 20 (Where X ¼Sr/ba/ca/mg) New Mamentioning

confidence: 97%

Synthesis of novel Dy3+ activated phosphate phosphors for NUV excited LED

Shinde¹,

Dhoble

Kumar

2011

Journal of Luminescence

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“…Sr 6 BP 5 O 20 phosphor was first reported by Murakami et al . . In this study we replaced boron by aluminium to get Sr 6 AlP 5 O 20 and then Sr 2+ by Ba 2+ ions (alkali earth metals).…”

Section: Resultsmentioning

confidence: 99%

5d–4f transition in new phosphate‐based phosphors

Shinde¹,

Dhoble

2011

Luminescence

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The preparation of Ce(3+)-doped Sr(6) AlP(5) O(20) and Ba(6) AlP(5) O(20) by a combustion method is described. Formation of compounds was confirmed by X-ray diffraction (XRD) analysis. The photoluminescence (PL) emission spectra were observed at 355 nm when excited at 307 nm for the various concentrations. The PL emission spectra of phosphors showed strong Ce(3+) emission due to the 5 d → 4f transition of Ce(3+) ions. The Ce(3+) emission intensity in Sr(6) AlP(5)O(20):Ce phosphor was higher than that in Ba(6) AlP(5)O(20):Ce and it may be useful for scintillation applications.

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“…The Sr 6 BP 5 O 20 :Eu 2+ blue phosphor, hereafter referred to as SBP, is not a new phosphor but had been developed in the 1970s for use in a high-color-rendering fluorescent lamp. 26 However, the luminescence of the SBP phosphor under VUV excitation has never been examined from the point of view of its use in PDP applications. In addition, the exact structure of the Sr 6 BP 5 O 20 stoichiometry had never been fully identified until we disclosed it.…”

Section: Resultsmentioning

confidence: 99%

Combinatorial Screening and QSAR Modeling in the SrO–B[sub 2]O[sub 3]–P[sub 2]O[sub 5] Ternary System to Search for Thermally Stable Blue Phosphors for PDPs

Sohn

Yoo

Shin

et al. 2005

J. Electrochem. Soc.

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The need to identify a thermally stable blue phosphor for plasma display panels (PDPs) is vital, because the currently used BaMgAl10normalO17:normalEu2+ (BAM) phosphors have serious thermal degradation problems. In this respect, we report on the screening of a Eu2+ -doped SrO–normalB2normalO3–normalP2normalO5 system by a combinatorial chemistry technique so that combinatorial libraries could be developed in terms of luminance and color chromaticity. As a quantitative structure activity relationship (QSAR) model, a continuous luminance map was obtained as a function of composition using an artificial neural network trained using the results from the combinatorial screening. Promising photoluminescence was found in a lineshape composition range in the SrO–normalB2normalO3–normalP2normalO5 ternary library, and the samples in this composition range were crystallized into a single major phase of Sr6BnormalP5normalO20:Eu2+ in an I4false¯c2 symmetry with cell parameters a=9.784 and c=19.01 . The luminance of Sr6BnormalP5normalO20:Eu2+ was 2.8 times as high as BAM under vacuum ultraviolet (VUV) excitation and underwent negligible thermal degradation, even though the CIE color chromaticity was somewhat poor.

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A new deluxe fluorescent lamp with a color rendering index of 99

Cited by 4 publications

References 2 publications

Synthesis of novel Dy3+ activated phosphate phosphors for NUV excited LED

Synthesis of novel Dy3+ activated phosphate phosphors for NUV excited LED

5d–4f transition in new phosphate‐based phosphors

Combinatorial Screening and QSAR Modeling in the SrO–B[sub 2]O[sub 3]–P[sub 2]O[sub 5] Ternary System to Search for Thermally Stable Blue Phosphors for PDPs

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