Optical response of Eu3+-activated MgAl2O4 nanophosphors for Red emissive
Eu 3+ -activated magnesium aluminate phosphors were successfully synthesized by nitrate–citrate gel combustion method and thermally treated at 650, 750, 850, and 950 o C. The powder X-ray diffraction pattern showed that all MgAl 2 O 4 : x Eu 3+ (0 ≤ x ≤ 0.10) samples exhibit crystallized cubic pha...
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| creator | Rao, B. Nageswara Rao, P. Tirupathi Basha, Sk. Esub Prasanna, D. S. L. Samatha, K. Ramachandra, R. K. |
| description | Eu
3+
-activated magnesium aluminate phosphors were successfully synthesized by nitrate–citrate gel combustion method and thermally treated at 650, 750, 850, and 950
o
C. The powder X-ray diffraction pattern showed that all MgAl
2
O
4
:
x
Eu
3+
(0 ≤
x ≤
0.10) samples exhibit crystallized cubic phase of spinel structure with space group Fd-3 m. The Debye–Scherrer equation is used to estimate average crystallite size values and are found to be 8.5–12.1 nm, that are also confirmed by high-resolution transmission electron microscopy (HRTEM) images. TGA–DTG results suggest that the maximum decomposition of the precursors were observed below 600
o
C. Accordingly, the decomposition temperature was taken 650
o
C and above. The functional groups of the powder samples were determined by FTIR. Energy levels were characterized, and the band gap energy (
E
g
) has been calculated using UV–Vis absorption spectroscopy and found to be in the range of 5.08–5.19 eV. The FESEM images shows that the nanoparticles are agglomerated and are in nonuniform spherical shape with reduced average particle size from 27 ± 4.1 to 24.1 ± 3.3 nm. Further, the elemental composition of the as-prepared samples was analyzed by using energy-dispersive X-ray spectra (EDAX). The photoluminescent property of MgAl
2
O
4
:
x
Eu
3+
samples was investigated using room-temperature emission spectroscopy. These phosphors show different emissions of Eu
3+
corresponding to
5
D
0
→
7
F
J
=1,2,3,4
transitions which lie in the wavelength range from 590 to 703 nm. The red emission transition
5
D
0
→
7
F
2
(∆
J
= 2) centered at 612 nm has been known to be hypersensitive, strong, and more intense of all samples. The PL emission intensity increases up to 4 mol% Eu
3+
concentration and then decreases due to the process of concentration quenching. The chromaticity color coordinates were obtained from the luminescence emission spectrum. The temperature-dependent luminescence property of MgAl
2
O
4
:4%Eu
3+
phosphor has also been discussed. These results showed that MgAl
2
O
4
:
x
Eu
3+
could be a prominent material for the production of artificial red light in red LEDs. |
| doi_str_mv | 10.1007/s10854-023-10341-w |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2800406045</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2800406045</sourcerecordid><originalsourceid>FETCH-LOGICAL-c249t-31a3e4120cc5864a4afacfc568031ec0442029e13afab6a902cd705982e634ff3</originalsourceid><addsrcrecordid>eNp9kE1LAzEQhoMoWKt_wNOCR4lOksl-HEupWqgsiIK3ENOkbmk3a7Jt8d8bXcGbh2Fg5v2Ah5BLBjcMoLiNDEqJFLigDAQyejgiIyYLQbHkr8dkBJUsKErOT8lZjGsAyFGUIzKvu74xepMFGzvfRpt5l8124ppq0zd73dtl9riabHiNWatb3737mCbEzPmQPaWv3TYxNnt7Tk6c3kR78bvH5OVu9jx9oIv6fj6dLKjhWPVUMC0sMg7GyDJHjdpp44zMSxDMGkDkwCvLRLq_5boCbpYFyKrkNhfonBiTqyG3C_5jZ2Ov1n4X2lSpeAmAkAPKpOKDygQfY7BOdaHZ6vCpGKhvZGpAphIy9YNMHZJJDKaYxO3Khr_of1xf0o9uEQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2800406045</pqid></control><display><type>article</type><title>Optical response of Eu3+-activated MgAl2O4 nanophosphors for Red emissive</title><source>Springer Nature - Complete Springer Journals</source><creator>Rao, B. Nageswara ; Rao, P. Tirupathi ; Basha, Sk. Esub ; Prasanna, D. S. L. ; Samatha, K. ; Ramachandra, R. K.</creator><creatorcontrib>Rao, B. Nageswara ; Rao, P. Tirupathi ; Basha, Sk. Esub ; Prasanna, D. S. L. ; Samatha, K. ; Ramachandra, R. K.</creatorcontrib><description>Eu
3+
-activated magnesium aluminate phosphors were successfully synthesized by nitrate–citrate gel combustion method and thermally treated at 650, 750, 850, and 950
o
C. The powder X-ray diffraction pattern showed that all MgAl
2
O
4
:
x
Eu
3+
(0 ≤
x ≤
0.10) samples exhibit crystallized cubic phase of spinel structure with space group Fd-3 m. The Debye–Scherrer equation is used to estimate average crystallite size values and are found to be 8.5–12.1 nm, that are also confirmed by high-resolution transmission electron microscopy (HRTEM) images. TGA–DTG results suggest that the maximum decomposition of the precursors were observed below 600
o
C. Accordingly, the decomposition temperature was taken 650
o
C and above. The functional groups of the powder samples were determined by FTIR. Energy levels were characterized, and the band gap energy (
E
g
) has been calculated using UV–Vis absorption spectroscopy and found to be in the range of 5.08–5.19 eV. The FESEM images shows that the nanoparticles are agglomerated and are in nonuniform spherical shape with reduced average particle size from 27 ± 4.1 to 24.1 ± 3.3 nm. Further, the elemental composition of the as-prepared samples was analyzed by using energy-dispersive X-ray spectra (EDAX). The photoluminescent property of MgAl
2
O
4
:
x
Eu
3+
samples was investigated using room-temperature emission spectroscopy. These phosphors show different emissions of Eu
3+
corresponding to
5
D
0
→
7
F
J
=1,2,3,4
transitions which lie in the wavelength range from 590 to 703 nm. The red emission transition
5
D
0
→
7
F
2
(∆
J
= 2) centered at 612 nm has been known to be hypersensitive, strong, and more intense of all samples. The PL emission intensity increases up to 4 mol% Eu
3+
concentration and then decreases due to the process of concentration quenching. The chromaticity color coordinates were obtained from the luminescence emission spectrum. The temperature-dependent luminescence property of MgAl
2
O
4
:4%Eu
3+
phosphor has also been discussed. These results showed that MgAl
2
O
4
:
x
Eu
3+
could be a prominent material for the production of artificial red light in red LEDs.</description><identifier>ISSN: 0957-4522</identifier><identifier>EISSN: 1573-482X</identifier><identifier>DOI: 10.1007/s10854-023-10341-w</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Absorption spectroscopy ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Chromaticity ; Crystallites ; Crystallization ; Decomposition ; Diffraction patterns ; Emission analysis ; Energy gap ; Energy levels ; Europium ; Functional groups ; High resolution electron microscopy ; Luminescence ; Magnesium aluminate ; Materials Science ; Nanoparticles ; Nanophosphors ; Optical and Electronic Materials ; Phosphors ; Photoluminescence ; Room temperature ; Spectrum analysis ; Temperature dependence ; X ray powder diffraction ; X ray spectra</subject><ispartof>Journal of materials science. Materials in electronics, 2023-04, Vol.34 (11), p.955, Article 955</ispartof><rights>The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023. 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><citedby>FETCH-LOGICAL-c249t-31a3e4120cc5864a4afacfc568031ec0442029e13afab6a902cd705982e634ff3</citedby><cites>FETCH-LOGICAL-c249t-31a3e4120cc5864a4afacfc568031ec0442029e13afab6a902cd705982e634ff3</cites><orcidid>0000-0002-5400-4926</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/s10854-023-10341-w$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10854-023-10341-w$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51298</link.rule.ids></links><search><creatorcontrib>Rao, B. Nageswara</creatorcontrib><creatorcontrib>Rao, P. Tirupathi</creatorcontrib><creatorcontrib>Basha, Sk. Esub</creatorcontrib><creatorcontrib>Prasanna, D. S. L.</creatorcontrib><creatorcontrib>Samatha, K.</creatorcontrib><creatorcontrib>Ramachandra, R. K.</creatorcontrib><title>Optical response of Eu3+-activated MgAl2O4 nanophosphors for Red emissive</title><title>Journal of materials science. Materials in electronics</title><addtitle>J Mater Sci: Mater Electron</addtitle><description>Eu
3+
-activated magnesium aluminate phosphors were successfully synthesized by nitrate–citrate gel combustion method and thermally treated at 650, 750, 850, and 950
o
C. The powder X-ray diffraction pattern showed that all MgAl
2
O
4
:
x
Eu
3+
(0 ≤
x ≤
0.10) samples exhibit crystallized cubic phase of spinel structure with space group Fd-3 m. The Debye–Scherrer equation is used to estimate average crystallite size values and are found to be 8.5–12.1 nm, that are also confirmed by high-resolution transmission electron microscopy (HRTEM) images. TGA–DTG results suggest that the maximum decomposition of the precursors were observed below 600
o
C. Accordingly, the decomposition temperature was taken 650
o
C and above. The functional groups of the powder samples were determined by FTIR. Energy levels were characterized, and the band gap energy (
E
g
) has been calculated using UV–Vis absorption spectroscopy and found to be in the range of 5.08–5.19 eV. The FESEM images shows that the nanoparticles are agglomerated and are in nonuniform spherical shape with reduced average particle size from 27 ± 4.1 to 24.1 ± 3.3 nm. Further, the elemental composition of the as-prepared samples was analyzed by using energy-dispersive X-ray spectra (EDAX). The photoluminescent property of MgAl
2
O
4
:
x
Eu
3+
samples was investigated using room-temperature emission spectroscopy. These phosphors show different emissions of Eu
3+
corresponding to
5
D
0
→
7
F
J
=1,2,3,4
transitions which lie in the wavelength range from 590 to 703 nm. The red emission transition
5
D
0
→
7
F
2
(∆
J
= 2) centered at 612 nm has been known to be hypersensitive, strong, and more intense of all samples. The PL emission intensity increases up to 4 mol% Eu
3+
concentration and then decreases due to the process of concentration quenching. The chromaticity color coordinates were obtained from the luminescence emission spectrum. The temperature-dependent luminescence property of MgAl
2
O
4
:4%Eu
3+
phosphor has also been discussed. These results showed that MgAl
2
O
4
:
x
Eu
3+
could be a prominent material for the production of artificial red light in red LEDs.</description><subject>Absorption spectroscopy</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Chromaticity</subject><subject>Crystallites</subject><subject>Crystallization</subject><subject>Decomposition</subject><subject>Diffraction patterns</subject><subject>Emission analysis</subject><subject>Energy gap</subject><subject>Energy levels</subject><subject>Europium</subject><subject>Functional groups</subject><subject>High resolution electron microscopy</subject><subject>Luminescence</subject><subject>Magnesium aluminate</subject><subject>Materials Science</subject><subject>Nanoparticles</subject><subject>Nanophosphors</subject><subject>Optical and Electronic Materials</subject><subject>Phosphors</subject><subject>Photoluminescence</subject><subject>Room temperature</subject><subject>Spectrum analysis</subject><subject>Temperature dependence</subject><subject>X ray powder diffraction</subject><subject>X ray spectra</subject><issn>0957-4522</issn><issn>1573-482X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kE1LAzEQhoMoWKt_wNOCR4lOksl-HEupWqgsiIK3ENOkbmk3a7Jt8d8bXcGbh2Fg5v2Ah5BLBjcMoLiNDEqJFLigDAQyejgiIyYLQbHkr8dkBJUsKErOT8lZjGsAyFGUIzKvu74xepMFGzvfRpt5l8124ppq0zd73dtl9riabHiNWatb3737mCbEzPmQPaWv3TYxNnt7Tk6c3kR78bvH5OVu9jx9oIv6fj6dLKjhWPVUMC0sMg7GyDJHjdpp44zMSxDMGkDkwCvLRLq_5boCbpYFyKrkNhfonBiTqyG3C_5jZ2Ov1n4X2lSpeAmAkAPKpOKDygQfY7BOdaHZ6vCpGKhvZGpAphIy9YNMHZJJDKaYxO3Khr_of1xf0o9uEQ</recordid><startdate>20230401</startdate><enddate>20230401</enddate><creator>Rao, B. Nageswara</creator><creator>Rao, P. Tirupathi</creator><creator>Basha, Sk. Esub</creator><creator>Prasanna, D. S. L.</creator><creator>Samatha, K.</creator><creator>Ramachandra, R. K.</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>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>F28</scope><scope>FR3</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>L7M</scope><scope>P5Z</scope><scope>P62</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>S0W</scope><orcidid>https://orcid.org/0000-0002-5400-4926</orcidid></search><sort><creationdate>20230401</creationdate><title>Optical response of Eu3+-activated MgAl2O4 nanophosphors for Red emissive</title><author>Rao, B. Nageswara ; Rao, P. Tirupathi ; Basha, Sk. Esub ; Prasanna, D. S. L. ; Samatha, K. ; Ramachandra, R. K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c249t-31a3e4120cc5864a4afacfc568031ec0442029e13afab6a902cd705982e634ff3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Absorption spectroscopy</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Chromaticity</topic><topic>Crystallites</topic><topic>Crystallization</topic><topic>Decomposition</topic><topic>Diffraction patterns</topic><topic>Emission analysis</topic><topic>Energy gap</topic><topic>Energy levels</topic><topic>Europium</topic><topic>Functional groups</topic><topic>High resolution electron microscopy</topic><topic>Luminescence</topic><topic>Magnesium aluminate</topic><topic>Materials Science</topic><topic>Nanoparticles</topic><topic>Nanophosphors</topic><topic>Optical and Electronic Materials</topic><topic>Phosphors</topic><topic>Photoluminescence</topic><topic>Room temperature</topic><topic>Spectrum analysis</topic><topic>Temperature dependence</topic><topic>X ray powder diffraction</topic><topic>X ray spectra</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rao, B. Nageswara</creatorcontrib><creatorcontrib>Rao, P. Tirupathi</creatorcontrib><creatorcontrib>Basha, Sk. Esub</creatorcontrib><creatorcontrib>Prasanna, D. S. L.</creatorcontrib><creatorcontrib>Samatha, K.</creatorcontrib><creatorcontrib>Ramachandra, R. K.</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>DELNET Engineering & Technology Collection</collection><jtitle>Journal of materials science. Materials in electronics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rao, B. Nageswara</au><au>Rao, P. Tirupathi</au><au>Basha, Sk. Esub</au><au>Prasanna, D. S. L.</au><au>Samatha, K.</au><au>Ramachandra, R. K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optical response of Eu3+-activated MgAl2O4 nanophosphors for Red emissive</atitle><jtitle>Journal of materials science. Materials in electronics</jtitle><stitle>J Mater Sci: Mater Electron</stitle><date>2023-04-01</date><risdate>2023</risdate><volume>34</volume><issue>11</issue><spage>955</spage><pages>955-</pages><artnum>955</artnum><issn>0957-4522</issn><eissn>1573-482X</eissn><abstract>Eu
3+
-activated magnesium aluminate phosphors were successfully synthesized by nitrate–citrate gel combustion method and thermally treated at 650, 750, 850, and 950
o
C. The powder X-ray diffraction pattern showed that all MgAl
2
O
4
:
x
Eu
3+
(0 ≤
x ≤
0.10) samples exhibit crystallized cubic phase of spinel structure with space group Fd-3 m. The Debye–Scherrer equation is used to estimate average crystallite size values and are found to be 8.5–12.1 nm, that are also confirmed by high-resolution transmission electron microscopy (HRTEM) images. TGA–DTG results suggest that the maximum decomposition of the precursors were observed below 600
o
C. Accordingly, the decomposition temperature was taken 650
o
C and above. The functional groups of the powder samples were determined by FTIR. Energy levels were characterized, and the band gap energy (
E
g
) has been calculated using UV–Vis absorption spectroscopy and found to be in the range of 5.08–5.19 eV. The FESEM images shows that the nanoparticles are agglomerated and are in nonuniform spherical shape with reduced average particle size from 27 ± 4.1 to 24.1 ± 3.3 nm. Further, the elemental composition of the as-prepared samples was analyzed by using energy-dispersive X-ray spectra (EDAX). The photoluminescent property of MgAl
2
O
4
:
x
Eu
3+
samples was investigated using room-temperature emission spectroscopy. These phosphors show different emissions of Eu
3+
corresponding to
5
D
0
→
7
F
J
=1,2,3,4
transitions which lie in the wavelength range from 590 to 703 nm. The red emission transition
5
D
0
→
7
F
2
(∆
J
= 2) centered at 612 nm has been known to be hypersensitive, strong, and more intense of all samples. The PL emission intensity increases up to 4 mol% Eu
3+
concentration and then decreases due to the process of concentration quenching. The chromaticity color coordinates were obtained from the luminescence emission spectrum. The temperature-dependent luminescence property of MgAl
2
O
4
:4%Eu
3+
phosphor has also been discussed. These results showed that MgAl
2
O
4
:
x
Eu
3+
could be a prominent material for the production of artificial red light in red LEDs.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s10854-023-10341-w</doi><orcidid>https://orcid.org/0000-0002-5400-4926</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0957-4522 |
| ispartof | Journal of materials science. Materials in electronics, 2023-04, Vol.34 (11), p.955, Article 955 |
| issn | 0957-4522 1573-482X |
| language | eng |
| recordid | cdi_proquest_journals_2800406045 |
| source | Springer Nature - Complete Springer Journals |
| subjects | Absorption spectroscopy Characterization and Evaluation of Materials Chemistry and Materials Science Chromaticity Crystallites Crystallization Decomposition Diffraction patterns Emission analysis Energy gap Energy levels Europium Functional groups High resolution electron microscopy Luminescence Magnesium aluminate Materials Science Nanoparticles Nanophosphors Optical and Electronic Materials Phosphors Photoluminescence Room temperature Spectrum analysis Temperature dependence X ray powder diffraction X ray spectra |
| title | Optical response of Eu3+-activated MgAl2O4 nanophosphors for Red emissive |
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