Comparative study of Eu3+ doped calcium borate glasses and crystalline calcium hexaborate phosphors
Calcium borate glasses and crystalline calcium hexaborate phosphors were prepared by doping with varying concentration of Eu 2 O 3 . Crystalline samples of composition: (100−x)CaB 6 O 10 -xEu 2 O 3 (x = 0 to 5 mol%) and their analogous glass samples of composition: (25−0.25x)CaO-(75−0.75x)B 2 O 3 -x...
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| creator | Sharma, Suruchi Middha, Shiffali Khanna, Atul Chen, Benjamin Chen, Banghao |
| description | Calcium borate glasses and crystalline calcium hexaborate phosphors were prepared by doping with varying concentration of Eu
2
O
3
. Crystalline samples of composition: (100−x)CaB
6
O
10
-xEu
2
O
3
(x = 0 to 5 mol%) and their analogous glass samples of composition: (25−0.25x)CaO-(75−0.75x)B
2
O
3
-xEu
2
O
3
(x = 0 to 5 mol %) were prepared by solid-state reaction and melt-quenching techniques respectively. The samples were characterized by X-ray diffraction (XRD), differential scanning calorimetry, Raman, Fourier transform infrared, photoluminescence (PL) and the
11
B Magic Angle Spinning (MAS) and Nuclear Magnetic Resonance (NMR) spectroscopy. A comparison was made between the light emission properties of crystalline and glassy borate phosphors. Rietveld analysis of XRD patterns confirm the monoclinic structure of calcium hexaborates. The density of glasses increases from 2.42 to 3.04 g cm
−3
and the glass transition temperature increases from 727 to 751 °C with an increase in concentration of Eu
2
O
3
from 0 to 5-mol%. Raman and FTIR studies show vibration modes in tri, hexa and pentaborate anions containing [BO
4
] and [BO
3
] structural units in crystalline and glass samples. The concentration of tetrahedral borons in the undoped 25CaO–75B
2
O
3
glass and crystalline CaB
6
O
10
was found to be 37 and 35% respectively. Eu
2
O
3
doped calcium borate glasses emit intense red color while the crystalline calcium hexaborates emit whitish-blue color at an excitation wavelength of 392 nm. The emission of bluish light in Eu doped crystalline calcium hexaborates reveals that partial reduction of Eu
3+
into Eu
2+
takes place in the crystalline sample. In both glass and crystalline samples, the PL intensity increases with an increase in concentration of Eu
2
O
3
from 1 to 4 mol%, while at 5 mol% Eu
2
O
3
concentration, quenching of luminescence is observed. The luminescence intensity of glasses is found to be significantly higher than that of crystalline samples. |
| doi_str_mv | 10.1007/s10854-023-11754-3 |
| format | Article |
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2
O
3
. Crystalline samples of composition: (100−x)CaB
6
O
10
-xEu
2
O
3
(x = 0 to 5 mol%) and their analogous glass samples of composition: (25−0.25x)CaO-(75−0.75x)B
2
O
3
-xEu
2
O
3
(x = 0 to 5 mol %) were prepared by solid-state reaction and melt-quenching techniques respectively. The samples were characterized by X-ray diffraction (XRD), differential scanning calorimetry, Raman, Fourier transform infrared, photoluminescence (PL) and the
11
B Magic Angle Spinning (MAS) and Nuclear Magnetic Resonance (NMR) spectroscopy. A comparison was made between the light emission properties of crystalline and glassy borate phosphors. Rietveld analysis of XRD patterns confirm the monoclinic structure of calcium hexaborates. The density of glasses increases from 2.42 to 3.04 g cm
−3
and the glass transition temperature increases from 727 to 751 °C with an increase in concentration of Eu
2
O
3
from 0 to 5-mol%. Raman and FTIR studies show vibration modes in tri, hexa and pentaborate anions containing [BO
4
] and [BO
3
] structural units in crystalline and glass samples. The concentration of tetrahedral borons in the undoped 25CaO–75B
2
O
3
glass and crystalline CaB
6
O
10
was found to be 37 and 35% respectively. Eu
2
O
3
doped calcium borate glasses emit intense red color while the crystalline calcium hexaborates emit whitish-blue color at an excitation wavelength of 392 nm. The emission of bluish light in Eu doped crystalline calcium hexaborates reveals that partial reduction of Eu
3+
into Eu
2+
takes place in the crystalline sample. In both glass and crystalline samples, the PL intensity increases with an increase in concentration of Eu
2
O
3
from 1 to 4 mol%, while at 5 mol% Eu
2
O
3
concentration, quenching of luminescence is observed. The luminescence intensity of glasses is found to be significantly higher than that of crystalline samples.</description><identifier>ISSN: 0957-4522</identifier><identifier>EISSN: 1573-482X</identifier><identifier>DOI: 10.1007/s10854-023-11754-3</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Boron oxides ; Calcium ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Color ; Comparative studies ; Composition ; Emission analysis ; Europium ; Europium compounds ; Fourier transforms ; Glass transition temperature ; Light emission ; Luminescence ; Materials Science ; NMR ; NMR spectroscopy ; Nuclear magnetic resonance ; Optical and Electronic Materials ; Phosphors ; Photoluminescence ; Quenching ; Vibration mode ; X-ray diffraction</subject><ispartof>Journal of materials science. Materials in electronics, 2024, Vol.35 (2), p.152, Article 152</ispartof><rights>The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c200t-bc2e654b1d2c6f75a0e6cfe8d8376f51cc2fed9330383ed44f3b8abda4f16fab3</cites><orcidid>0000-0002-6361-1517</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10854-023-11754-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10854-023-11754-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27926,27927,41490,42559,51321</link.rule.ids></links><search><creatorcontrib>Sharma, Suruchi</creatorcontrib><creatorcontrib>Middha, Shiffali</creatorcontrib><creatorcontrib>Khanna, Atul</creatorcontrib><creatorcontrib>Chen, Benjamin</creatorcontrib><creatorcontrib>Chen, Banghao</creatorcontrib><title>Comparative study of Eu3+ doped calcium borate glasses and crystalline calcium hexaborate phosphors</title><title>Journal of materials science. Materials in electronics</title><addtitle>J Mater Sci: Mater Electron</addtitle><description>Calcium borate glasses and crystalline calcium hexaborate phosphors were prepared by doping with varying concentration of Eu
2
O
3
. Crystalline samples of composition: (100−x)CaB
6
O
10
-xEu
2
O
3
(x = 0 to 5 mol%) and their analogous glass samples of composition: (25−0.25x)CaO-(75−0.75x)B
2
O
3
-xEu
2
O
3
(x = 0 to 5 mol %) were prepared by solid-state reaction and melt-quenching techniques respectively. The samples were characterized by X-ray diffraction (XRD), differential scanning calorimetry, Raman, Fourier transform infrared, photoluminescence (PL) and the
11
B Magic Angle Spinning (MAS) and Nuclear Magnetic Resonance (NMR) spectroscopy. A comparison was made between the light emission properties of crystalline and glassy borate phosphors. Rietveld analysis of XRD patterns confirm the monoclinic structure of calcium hexaborates. The density of glasses increases from 2.42 to 3.04 g cm
−3
and the glass transition temperature increases from 727 to 751 °C with an increase in concentration of Eu
2
O
3
from 0 to 5-mol%. Raman and FTIR studies show vibration modes in tri, hexa and pentaborate anions containing [BO
4
] and [BO
3
] structural units in crystalline and glass samples. The concentration of tetrahedral borons in the undoped 25CaO–75B
2
O
3
glass and crystalline CaB
6
O
10
was found to be 37 and 35% respectively. Eu
2
O
3
doped calcium borate glasses emit intense red color while the crystalline calcium hexaborates emit whitish-blue color at an excitation wavelength of 392 nm. The emission of bluish light in Eu doped crystalline calcium hexaborates reveals that partial reduction of Eu
3+
into Eu
2+
takes place in the crystalline sample. In both glass and crystalline samples, the PL intensity increases with an increase in concentration of Eu
2
O
3
from 1 to 4 mol%, while at 5 mol% Eu
2
O
3
concentration, quenching of luminescence is observed. The luminescence intensity of glasses is found to be significantly higher than that of crystalline samples.</description><subject>Boron oxides</subject><subject>Calcium</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Color</subject><subject>Comparative studies</subject><subject>Composition</subject><subject>Emission analysis</subject><subject>Europium</subject><subject>Europium compounds</subject><subject>Fourier transforms</subject><subject>Glass transition temperature</subject><subject>Light emission</subject><subject>Luminescence</subject><subject>Materials Science</subject><subject>NMR</subject><subject>NMR spectroscopy</subject><subject>Nuclear magnetic resonance</subject><subject>Optical and Electronic Materials</subject><subject>Phosphors</subject><subject>Photoluminescence</subject><subject>Quenching</subject><subject>Vibration mode</subject><subject>X-ray diffraction</subject><issn>0957-4522</issn><issn>1573-482X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLw0AQxxdRsFa_gKcFjxLdZx5HKfUBBS8K3pbNPtqUNBt3ErHf3tUUvXkYZmB-_xn4IXRJyQ0lpLgFSkopMsJ4RmmRJn6EZlQWPBMleztGM1LJIhOSsVN0BrAlhOSClzNkFmHX66iH5sNhGEa7x8Hj5civsQ29s9jo1jTjDtchQQ6vWw3gAOsureIeBt22Ted-sY371Ae03wRIFeEcnXjdgrs49Dl6vV--LB6z1fPD0-JulRlGyJDVhrlcippaZnJfSE1cbrwrbcmL3EtqDPPOVpwTXnJnhfC8LnVttfA097rmc3Q13e1jeB8dDGobxtill4pVVApeCSITxSbKxAAQnVd9bHY67hUl6lummmSqJFP9yFQ8hfgUggR3axf_Tv-T-gKatnmr</recordid><startdate>2024</startdate><enddate>2024</enddate><creator>Sharma, Suruchi</creator><creator>Middha, Shiffali</creator><creator>Khanna, Atul</creator><creator>Chen, Benjamin</creator><creator>Chen, Banghao</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-6361-1517</orcidid></search><sort><creationdate>2024</creationdate><title>Comparative study of Eu3+ doped calcium borate glasses and crystalline calcium hexaborate phosphors</title><author>Sharma, Suruchi ; Middha, Shiffali ; Khanna, Atul ; Chen, Benjamin ; Chen, Banghao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c200t-bc2e654b1d2c6f75a0e6cfe8d8376f51cc2fed9330383ed44f3b8abda4f16fab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Boron oxides</topic><topic>Calcium</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Color</topic><topic>Comparative studies</topic><topic>Composition</topic><topic>Emission analysis</topic><topic>Europium</topic><topic>Europium compounds</topic><topic>Fourier transforms</topic><topic>Glass transition temperature</topic><topic>Light emission</topic><topic>Luminescence</topic><topic>Materials Science</topic><topic>NMR</topic><topic>NMR spectroscopy</topic><topic>Nuclear magnetic resonance</topic><topic>Optical and Electronic Materials</topic><topic>Phosphors</topic><topic>Photoluminescence</topic><topic>Quenching</topic><topic>Vibration mode</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sharma, Suruchi</creatorcontrib><creatorcontrib>Middha, Shiffali</creatorcontrib><creatorcontrib>Khanna, Atul</creatorcontrib><creatorcontrib>Chen, Benjamin</creatorcontrib><creatorcontrib>Chen, Banghao</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of materials science. Materials in electronics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sharma, Suruchi</au><au>Middha, Shiffali</au><au>Khanna, Atul</au><au>Chen, Benjamin</au><au>Chen, Banghao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparative study of Eu3+ doped calcium borate glasses and crystalline calcium hexaborate phosphors</atitle><jtitle>Journal of materials science. Materials in electronics</jtitle><stitle>J Mater Sci: Mater Electron</stitle><date>2024</date><risdate>2024</risdate><volume>35</volume><issue>2</issue><spage>152</spage><pages>152-</pages><artnum>152</artnum><issn>0957-4522</issn><eissn>1573-482X</eissn><abstract>Calcium borate glasses and crystalline calcium hexaborate phosphors were prepared by doping with varying concentration of Eu
2
O
3
. Crystalline samples of composition: (100−x)CaB
6
O
10
-xEu
2
O
3
(x = 0 to 5 mol%) and their analogous glass samples of composition: (25−0.25x)CaO-(75−0.75x)B
2
O
3
-xEu
2
O
3
(x = 0 to 5 mol %) were prepared by solid-state reaction and melt-quenching techniques respectively. The samples were characterized by X-ray diffraction (XRD), differential scanning calorimetry, Raman, Fourier transform infrared, photoluminescence (PL) and the
11
B Magic Angle Spinning (MAS) and Nuclear Magnetic Resonance (NMR) spectroscopy. A comparison was made between the light emission properties of crystalline and glassy borate phosphors. Rietveld analysis of XRD patterns confirm the monoclinic structure of calcium hexaborates. The density of glasses increases from 2.42 to 3.04 g cm
−3
and the glass transition temperature increases from 727 to 751 °C with an increase in concentration of Eu
2
O
3
from 0 to 5-mol%. Raman and FTIR studies show vibration modes in tri, hexa and pentaborate anions containing [BO
4
] and [BO
3
] structural units in crystalline and glass samples. The concentration of tetrahedral borons in the undoped 25CaO–75B
2
O
3
glass and crystalline CaB
6
O
10
was found to be 37 and 35% respectively. Eu
2
O
3
doped calcium borate glasses emit intense red color while the crystalline calcium hexaborates emit whitish-blue color at an excitation wavelength of 392 nm. The emission of bluish light in Eu doped crystalline calcium hexaborates reveals that partial reduction of Eu
3+
into Eu
2+
takes place in the crystalline sample. In both glass and crystalline samples, the PL intensity increases with an increase in concentration of Eu
2
O
3
from 1 to 4 mol%, while at 5 mol% Eu
2
O
3
concentration, quenching of luminescence is observed. The luminescence intensity of glasses is found to be significantly higher than that of crystalline samples.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s10854-023-11754-3</doi><orcidid>https://orcid.org/0000-0002-6361-1517</orcidid></addata></record> |
| fulltext | fulltext |
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| ispartof | Journal of materials science. Materials in electronics, 2024, Vol.35 (2), p.152, Article 152 |
| issn | 0957-4522 1573-482X |
| language | eng |
| recordid | cdi_proquest_journals_2915439405 |
| source | Springer Journals |
| subjects | Boron oxides Calcium Characterization and Evaluation of Materials Chemistry and Materials Science Color Comparative studies Composition Emission analysis Europium Europium compounds Fourier transforms Glass transition temperature Light emission Luminescence Materials Science NMR NMR spectroscopy Nuclear magnetic resonance Optical and Electronic Materials Phosphors Photoluminescence Quenching Vibration mode X-ray diffraction |
| title | Comparative study of Eu3+ doped calcium borate glasses and crystalline calcium hexaborate phosphors |
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