Field emitter density control effect on emission current density by Ag-Cu alloy coating on carbon nanotubes
We have investigated the morphological evolution and improvement in field emission properties of carbon nanotube (CNT) emitters coated with an Ag-Cu alloy (ACa). Vertically aligned multiwalled CNTs (MWCNTs) were synthesized by direct current-plasma enhanced chemical vapor deposition. The MWCNTs were...
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| Veröffentlicht in: | Applied physics letters 2008-09, Vol.93 (10), p.103101-103101-3 |
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| container_end_page | 103101-3 |
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| container_issue | 10 |
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| container_title | Applied physics letters |
| container_volume | 93 |
| creator | Lee, Seung Youb Choi, Won Chel Jeon, Cheolho Park, Chong-Yun Yang, Ji Hoon Kwon, Myeung Hoi |
| description | We have investigated the morphological evolution and improvement in field emission properties of carbon nanotube (CNT) emitters coated with an Ag-Cu alloy (ACa). Vertically aligned multiwalled CNTs (MWCNTs) were synthesized by direct current-plasma enhanced chemical vapor deposition. The MWCNTs were then coated with ACa by dc-magnetron sputtering and then annealed. Scanning electron microscopy revealed an increase in the size of the ACa droplets on the CNTs after thermal annealing, and a decrease in the emitter density with increasing deposition time. The emitter density was controlled by the amount of ACa with high surface tension and annealing. A lower turn-on voltage
(
1.18
V
/
μ
m
)
and higher emission current density of
588.9
μ
A
/
cm
2
at
5.0
V
/
μ
m
were achieved from the sample containing ACa droplets with an average radius of 500 nm. |
| doi_str_mv | 10.1063/1.2972120 |
| format | Article |
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(
1.18
V
/
μ
m
)
and higher emission current density of
588.9
μ
A
/
cm
2
at
5.0
V
/
μ
m
were achieved from the sample containing ACa droplets with an average radius of 500 nm.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.2972120</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>American Institute of Physics</publisher><ispartof>Applied physics letters, 2008-09, Vol.93 (10), p.103101-103101-3</ispartof><rights>2008 American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c350t-183b119b5163ba6b08a591482041297c9f04bc0f7987c5500420bbae00254cf03</citedby><cites>FETCH-LOGICAL-c350t-183b119b5163ba6b08a591482041297c9f04bc0f7987c5500420bbae00254cf03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/apl/article-lookup/doi/10.1063/1.2972120$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,780,784,794,1559,4512,27924,27925,76384,76390</link.rule.ids></links><search><creatorcontrib>Lee, Seung Youb</creatorcontrib><creatorcontrib>Choi, Won Chel</creatorcontrib><creatorcontrib>Jeon, Cheolho</creatorcontrib><creatorcontrib>Park, Chong-Yun</creatorcontrib><creatorcontrib>Yang, Ji Hoon</creatorcontrib><creatorcontrib>Kwon, Myeung Hoi</creatorcontrib><title>Field emitter density control effect on emission current density by Ag-Cu alloy coating on carbon nanotubes</title><title>Applied physics letters</title><description>We have investigated the morphological evolution and improvement in field emission properties of carbon nanotube (CNT) emitters coated with an Ag-Cu alloy (ACa). Vertically aligned multiwalled CNTs (MWCNTs) were synthesized by direct current-plasma enhanced chemical vapor deposition. The MWCNTs were then coated with ACa by dc-magnetron sputtering and then annealed. Scanning electron microscopy revealed an increase in the size of the ACa droplets on the CNTs after thermal annealing, and a decrease in the emitter density with increasing deposition time. The emitter density was controlled by the amount of ACa with high surface tension and annealing. A lower turn-on voltage
(
1.18
V
/
μ
m
)
and higher emission current density of
588.9
μ
A
/
cm
2
at
5.0
V
/
μ
m
were achieved from the sample containing ACa droplets with an average radius of 500 nm.</description><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNp1kE9LAzEQxYMoWKsHv0GuHlZnks3-uQilWBUKXvQckjQp0W0iSXrot3fXFm-e3gz83jDvEXKLcI_Q8Ae8Z33LkMEZmSG0bcURu3MyAwBeNb3AS3KV8-e4Csb5jHytvB021O58KTbRjQ3ZlwM1MZQUB2qds6bQGCYiZz8OZp-SDeUP1Qe62FbLPVXDECenKj5sJ4tRSY8SVIhlr22-JhdODdnenHROPlZP78uXav32_LpcrCvDBZQKO64Rey2w4Vo1Gjoleqw7BjWO4UzvoNYGXNt3rRECoGagtbIATNTGAZ-Tu-Ndk2LOyTr5nfxOpYNEkFNLEuWppZF9PLLZ-DJ-HsP_8G9V8lSVPObnP3Hfb1I</recordid><startdate>20080908</startdate><enddate>20080908</enddate><creator>Lee, Seung Youb</creator><creator>Choi, Won Chel</creator><creator>Jeon, Cheolho</creator><creator>Park, Chong-Yun</creator><creator>Yang, Ji Hoon</creator><creator>Kwon, Myeung Hoi</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20080908</creationdate><title>Field emitter density control effect on emission current density by Ag-Cu alloy coating on carbon nanotubes</title><author>Lee, Seung Youb ; Choi, Won Chel ; Jeon, Cheolho ; Park, Chong-Yun ; Yang, Ji Hoon ; Kwon, Myeung Hoi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c350t-183b119b5163ba6b08a591482041297c9f04bc0f7987c5500420bbae00254cf03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Seung Youb</creatorcontrib><creatorcontrib>Choi, Won Chel</creatorcontrib><creatorcontrib>Jeon, Cheolho</creatorcontrib><creatorcontrib>Park, Chong-Yun</creatorcontrib><creatorcontrib>Yang, Ji Hoon</creatorcontrib><creatorcontrib>Kwon, Myeung Hoi</creatorcontrib><collection>CrossRef</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Seung Youb</au><au>Choi, Won Chel</au><au>Jeon, Cheolho</au><au>Park, Chong-Yun</au><au>Yang, Ji Hoon</au><au>Kwon, Myeung Hoi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Field emitter density control effect on emission current density by Ag-Cu alloy coating on carbon nanotubes</atitle><jtitle>Applied physics letters</jtitle><date>2008-09-08</date><risdate>2008</risdate><volume>93</volume><issue>10</issue><spage>103101</spage><epage>103101-3</epage><pages>103101-103101-3</pages><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>We have investigated the morphological evolution and improvement in field emission properties of carbon nanotube (CNT) emitters coated with an Ag-Cu alloy (ACa). Vertically aligned multiwalled CNTs (MWCNTs) were synthesized by direct current-plasma enhanced chemical vapor deposition. The MWCNTs were then coated with ACa by dc-magnetron sputtering and then annealed. Scanning electron microscopy revealed an increase in the size of the ACa droplets on the CNTs after thermal annealing, and a decrease in the emitter density with increasing deposition time. The emitter density was controlled by the amount of ACa with high surface tension and annealing. A lower turn-on voltage
(
1.18
V
/
μ
m
)
and higher emission current density of
588.9
μ
A
/
cm
2
at
5.0
V
/
μ
m
were achieved from the sample containing ACa droplets with an average radius of 500 nm.</abstract><pub>American Institute of Physics</pub><doi>10.1063/1.2972120</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2008-09, Vol.93 (10), p.103101-103101-3 |
| issn | 0003-6951 1077-3118 |
| language | eng |
| recordid | cdi_crossref_primary_10_1063_1_2972120 |
| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| title | Field emitter density control effect on emission current density by Ag-Cu alloy coating on carbon nanotubes |
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