Photoluminescence spectroscopy of Cr 3+ in β-Ga 2 O 3 and (Al 0.1 Ga 0.9 ) 2 O 3
Alloying β-Ga 2 O 3 with Al 2 O 3 to create (Al x Ga 1− x ) 2 O 3 enables ultra-wide bandgap materials suitable for applications deep into ultraviolet. In this work, photoluminescence (PL) spectra of Cr 3+ were investigated in monoclinic single crystal β-Ga 2 O 3 , and 10 mol. % Al 2 O 3 alloyed wi...
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| Veröffentlicht in: | Journal of vacuum science & technology. A, Vacuum, surfaces, and films Vacuum, surfaces, and films, 2023-03, Vol.41 (2) |
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| container_title | Journal of vacuum science & technology. A, Vacuum, surfaces, and films |
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| creator | Remple, Cassandra Barmore, Lauren M. Jesenovec, Jani McCloy, John S. McCluskey, Matthew D. |
| description | Alloying β-Ga
2
O
3
with Al
2
O
3
to create (Al
x
Ga
1− x
)
2
O
3
enables ultra-wide bandgap materials suitable for applications deep into ultraviolet. In this work, photoluminescence (PL) spectra of Cr
3+
were investigated in monoclinic single crystal β-Ga
2
O
3
, and 10 mol. % Al
2
O
3
alloyed with β-Ga
2
O
3
, denoted β-(Al
0.1
Ga
0.9
)
2
O
3
or AGO. Temperature-dependent PL properties were studied for Cr
3+
in AGO and β-Ga
2
O
3
from 295 to 16 K. For both materials at room temperature, the red-line emission doublet R
1
and R
2
occurs at 696 nm (1.78 eV) and 690 nm (1.80 eV), respectively, along with a broad emission band at 709 nm (1.75 eV). The linewidths for AGO are larger for all temperatures due to alloy broadening. For both materials, the R-lines blue-shift with decreasing temperature. The (lowest energy) R
1
line is dominant at low temperatures due to the thermal population of the levels. For temperatures above ∼50 K, however, the ratio of R
2
to R
1
peak areas is dominated by nonradiative combination. |
| format | Article |
| fullrecord | <record><control><sourceid>osti</sourceid><recordid>TN_cdi_osti_scitechconnect_1922570</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1922570</sourcerecordid><originalsourceid>FETCH-osti_scitechconnect_19225703</originalsourceid><addsrcrecordid>eNqNjUsKwjAURYMoWD97eDhSJOUlMdYOpfiZqeC8lJjSSE1KEwduy4W4JgVdgKML5xy4HRIxyZGupEy7JMJELChnyPpk4P0VETnHZUROx8oFV99vxmqvtFUafKNVaJ1XrnmAKyFrQczBWHg96a4ADgcQUNgLTNc1YMzgAzFOYfZVI9Iri9rr8W-HZLLdnLM9dT6Y3CsTtKqUs_bzkrOUc5mg-Ct6AxesOzs</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Photoluminescence spectroscopy of Cr 3+ in β-Ga 2 O 3 and (Al 0.1 Ga 0.9 ) 2 O 3</title><source>AIP Journals Complete</source><source>Alma/SFX Local Collection</source><creator>Remple, Cassandra ; Barmore, Lauren M. ; Jesenovec, Jani ; McCloy, John S. ; McCluskey, Matthew D.</creator><creatorcontrib>Remple, Cassandra ; Barmore, Lauren M. ; Jesenovec, Jani ; McCloy, John S. ; McCluskey, Matthew D.</creatorcontrib><description>Alloying β-Ga
2
O
3
with Al
2
O
3
to create (Al
x
Ga
1− x
)
2
O
3
enables ultra-wide bandgap materials suitable for applications deep into ultraviolet. In this work, photoluminescence (PL) spectra of Cr
3+
were investigated in monoclinic single crystal β-Ga
2
O
3
, and 10 mol. % Al
2
O
3
alloyed with β-Ga
2
O
3
, denoted β-(Al
0.1
Ga
0.9
)
2
O
3
or AGO. Temperature-dependent PL properties were studied for Cr
3+
in AGO and β-Ga
2
O
3
from 295 to 16 K. For both materials at room temperature, the red-line emission doublet R
1
and R
2
occurs at 696 nm (1.78 eV) and 690 nm (1.80 eV), respectively, along with a broad emission band at 709 nm (1.75 eV). The linewidths for AGO are larger for all temperatures due to alloy broadening. For both materials, the R-lines blue-shift with decreasing temperature. The (lowest energy) R
1
line is dominant at low temperatures due to the thermal population of the levels. For temperatures above ∼50 K, however, the ratio of R
2
to R
1
peak areas is dominated by nonradiative combination.</description><identifier>ISSN: 0734-2101</identifier><identifier>EISSN: 1520-8559</identifier><language>eng</language><publisher>United States: American Vacuum Society</publisher><ispartof>Journal of vacuum science & technology. A, Vacuum, surfaces, and films, 2023-03, Vol.41 (2)</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000000207864106 ; 0000000174767771 ; 0000000233697591 ; 0000000259376657 ; 0000000172831696</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1922570$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Remple, Cassandra</creatorcontrib><creatorcontrib>Barmore, Lauren M.</creatorcontrib><creatorcontrib>Jesenovec, Jani</creatorcontrib><creatorcontrib>McCloy, John S.</creatorcontrib><creatorcontrib>McCluskey, Matthew D.</creatorcontrib><title>Photoluminescence spectroscopy of Cr 3+ in β-Ga 2 O 3 and (Al 0.1 Ga 0.9 ) 2 O 3</title><title>Journal of vacuum science & technology. A, Vacuum, surfaces, and films</title><description>Alloying β-Ga
2
O
3
with Al
2
O
3
to create (Al
x
Ga
1− x
)
2
O
3
enables ultra-wide bandgap materials suitable for applications deep into ultraviolet. In this work, photoluminescence (PL) spectra of Cr
3+
were investigated in monoclinic single crystal β-Ga
2
O
3
, and 10 mol. % Al
2
O
3
alloyed with β-Ga
2
O
3
, denoted β-(Al
0.1
Ga
0.9
)
2
O
3
or AGO. Temperature-dependent PL properties were studied for Cr
3+
in AGO and β-Ga
2
O
3
from 295 to 16 K. For both materials at room temperature, the red-line emission doublet R
1
and R
2
occurs at 696 nm (1.78 eV) and 690 nm (1.80 eV), respectively, along with a broad emission band at 709 nm (1.75 eV). The linewidths for AGO are larger for all temperatures due to alloy broadening. For both materials, the R-lines blue-shift with decreasing temperature. The (lowest energy) R
1
line is dominant at low temperatures due to the thermal population of the levels. For temperatures above ∼50 K, however, the ratio of R
2
to R
1
peak areas is dominated by nonradiative combination.</description><issn>0734-2101</issn><issn>1520-8559</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqNjUsKwjAURYMoWD97eDhSJOUlMdYOpfiZqeC8lJjSSE1KEwduy4W4JgVdgKML5xy4HRIxyZGupEy7JMJELChnyPpk4P0VETnHZUROx8oFV99vxmqvtFUafKNVaJ1XrnmAKyFrQczBWHg96a4ADgcQUNgLTNc1YMzgAzFOYfZVI9Iri9rr8W-HZLLdnLM9dT6Y3CsTtKqUs_bzkrOUc5mg-Ct6AxesOzs</recordid><startdate>20230301</startdate><enddate>20230301</enddate><creator>Remple, Cassandra</creator><creator>Barmore, Lauren M.</creator><creator>Jesenovec, Jani</creator><creator>McCloy, John S.</creator><creator>McCluskey, Matthew D.</creator><general>American Vacuum Society</general><scope>OTOTI</scope><orcidid>https://orcid.org/0000000207864106</orcidid><orcidid>https://orcid.org/0000000174767771</orcidid><orcidid>https://orcid.org/0000000233697591</orcidid><orcidid>https://orcid.org/0000000259376657</orcidid><orcidid>https://orcid.org/0000000172831696</orcidid></search><sort><creationdate>20230301</creationdate><title>Photoluminescence spectroscopy of Cr 3+ in β-Ga 2 O 3 and (Al 0.1 Ga 0.9 ) 2 O 3</title><author>Remple, Cassandra ; Barmore, Lauren M. ; Jesenovec, Jani ; McCloy, John S. ; McCluskey, Matthew D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-osti_scitechconnect_19225703</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Remple, Cassandra</creatorcontrib><creatorcontrib>Barmore, Lauren M.</creatorcontrib><creatorcontrib>Jesenovec, Jani</creatorcontrib><creatorcontrib>McCloy, John S.</creatorcontrib><creatorcontrib>McCluskey, Matthew D.</creatorcontrib><collection>OSTI.GOV</collection><jtitle>Journal of vacuum science & technology. A, Vacuum, surfaces, and films</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Remple, Cassandra</au><au>Barmore, Lauren M.</au><au>Jesenovec, Jani</au><au>McCloy, John S.</au><au>McCluskey, Matthew D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photoluminescence spectroscopy of Cr 3+ in β-Ga 2 O 3 and (Al 0.1 Ga 0.9 ) 2 O 3</atitle><jtitle>Journal of vacuum science & technology. A, Vacuum, surfaces, and films</jtitle><date>2023-03-01</date><risdate>2023</risdate><volume>41</volume><issue>2</issue><issn>0734-2101</issn><eissn>1520-8559</eissn><abstract>Alloying β-Ga
2
O
3
with Al
2
O
3
to create (Al
x
Ga
1− x
)
2
O
3
enables ultra-wide bandgap materials suitable for applications deep into ultraviolet. In this work, photoluminescence (PL) spectra of Cr
3+
were investigated in monoclinic single crystal β-Ga
2
O
3
, and 10 mol. % Al
2
O
3
alloyed with β-Ga
2
O
3
, denoted β-(Al
0.1
Ga
0.9
)
2
O
3
or AGO. Temperature-dependent PL properties were studied for Cr
3+
in AGO and β-Ga
2
O
3
from 295 to 16 K. For both materials at room temperature, the red-line emission doublet R
1
and R
2
occurs at 696 nm (1.78 eV) and 690 nm (1.80 eV), respectively, along with a broad emission band at 709 nm (1.75 eV). The linewidths for AGO are larger for all temperatures due to alloy broadening. For both materials, the R-lines blue-shift with decreasing temperature. The (lowest energy) R
1
line is dominant at low temperatures due to the thermal population of the levels. For temperatures above ∼50 K, however, the ratio of R
2
to R
1
peak areas is dominated by nonradiative combination.</abstract><cop>United States</cop><pub>American Vacuum Society</pub><orcidid>https://orcid.org/0000000207864106</orcidid><orcidid>https://orcid.org/0000000174767771</orcidid><orcidid>https://orcid.org/0000000233697591</orcidid><orcidid>https://orcid.org/0000000259376657</orcidid><orcidid>https://orcid.org/0000000172831696</orcidid></addata></record> |
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| identifier | ISSN: 0734-2101 |
| ispartof | Journal of vacuum science & technology. A, Vacuum, surfaces, and films, 2023-03, Vol.41 (2) |
| issn | 0734-2101 1520-8559 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1922570 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| title | Photoluminescence spectroscopy of Cr 3+ in β-Ga 2 O 3 and (Al 0.1 Ga 0.9 ) 2 O 3 |
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