Surface plasmon-enhanced photodetection in MoTe2 phototransistors with Au nanoparticles
An effective method to improve the photoresponse of MoTe2 phototransistors by decorating with Au nanoparticles (Au NPs) is demonstrated. The Au NPs can concentrate a strong electromagnetic field around them by localized surface plasmon resonances. As a result, the light absorption of MoTe2 films cou...
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| Veröffentlicht in: | Applied physics letters 2019-09, Vol.115 (14) |
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| container_title | Applied physics letters |
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| creator | Chen, Wenjie Liang, Renrong Liu, Yu Zhang, Shuqin Cheng, Weijun Zhao, Linyuan Xu, Jun |
| description | An effective method to improve the photoresponse of MoTe2 phototransistors by decorating with Au nanoparticles (Au NPs) is demonstrated. The Au NPs can concentrate a strong electromagnetic field around them by localized surface plasmon resonances. As a result, the light absorption of MoTe2 films could be enhanced significantly. After optimized design with Au NPs, a more than 200 times increase in the photocurrent is observed under illumination of both 365 and 405 nm light. Furthermore, the responsivities are changed from 0.61 to 398 A/W under 365 nm light illumination and from 0.43 to 220 A/W under 405 nm light illumination after decorating Au NPs onto the MoTe2 phototransistors. These findings offer an avenue for practical applications of high performance MoTe2 optoelectronic devices in the future. |
| doi_str_mv | 10.1063/1.5116644 |
| format | Article |
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The Au NPs can concentrate a strong electromagnetic field around them by localized surface plasmon resonances. As a result, the light absorption of MoTe2 films could be enhanced significantly. After optimized design with Au NPs, a more than 200 times increase in the photocurrent is observed under illumination of both 365 and 405 nm light. Furthermore, the responsivities are changed from 0.61 to 398 A/W under 365 nm light illumination and from 0.43 to 220 A/W under 405 nm light illumination after decorating Au NPs onto the MoTe2 phototransistors. These findings offer an avenue for practical applications of high performance MoTe2 optoelectronic devices in the future.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.5116644</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Design optimization ; Electromagnetic absorption ; Electromagnetic fields ; Gold ; Illumination ; Light ; Molybdenum compounds ; Nanoparticles ; Optoelectronic devices ; Photoelectric effect ; Photoelectric emission ; Phototransistors ; Tellurides</subject><ispartof>Applied physics letters, 2019-09, Vol.115 (14)</ispartof><rights>Author(s)</rights><rights>2019 Author(s). 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The Au NPs can concentrate a strong electromagnetic field around them by localized surface plasmon resonances. As a result, the light absorption of MoTe2 films could be enhanced significantly. After optimized design with Au NPs, a more than 200 times increase in the photocurrent is observed under illumination of both 365 and 405 nm light. Furthermore, the responsivities are changed from 0.61 to 398 A/W under 365 nm light illumination and from 0.43 to 220 A/W under 405 nm light illumination after decorating Au NPs onto the MoTe2 phototransistors. These findings offer an avenue for practical applications of high performance MoTe2 optoelectronic devices in the future.</description><subject>Applied physics</subject><subject>Design optimization</subject><subject>Electromagnetic absorption</subject><subject>Electromagnetic fields</subject><subject>Gold</subject><subject>Illumination</subject><subject>Light</subject><subject>Molybdenum compounds</subject><subject>Nanoparticles</subject><subject>Optoelectronic devices</subject><subject>Photoelectric effect</subject><subject>Photoelectric emission</subject><subject>Phototransistors</subject><subject>Tellurides</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp90E1LxDAQBuAgCq6rB_9BwJNC13y0TXtcFr9gxYMrHkOSTtguu0lNUsV_b5eKHgRPwwwPM8yL0DklM0pKfk1nBaVlmecHaEKJEBmntDpEE0IIz8q6oMfoJMbN0BaM8wl6fe6DVQZwt1Vx510Gbq2cgQZ3a598AwlMar3DrcOPfgVsnKegXGxj8iHijzat8bzHTjnfqZBas4V4io6s2kY4-65T9HJ7s1rcZ8unu4fFfJkZzkTKcqYIQCUI2MraXNOyZrQ22nJlrRasaDRTJTdKcC4aXSgBWkM5_FRVtakKPkUX494u-LceYpIb3wc3nJSM1TUnjORiUJejMsHHGMDKLrQ7FT4lJXKfm6TyO7fBXo02mjap_e8_-N2HXyi7xv6H_27-AhaLfRA</recordid><startdate>20190930</startdate><enddate>20190930</enddate><creator>Chen, Wenjie</creator><creator>Liang, Renrong</creator><creator>Liu, Yu</creator><creator>Zhang, Shuqin</creator><creator>Cheng, Weijun</creator><creator>Zhao, Linyuan</creator><creator>Xu, Jun</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20190930</creationdate><title>Surface plasmon-enhanced photodetection in MoTe2 phototransistors with Au nanoparticles</title><author>Chen, Wenjie ; Liang, Renrong ; Liu, Yu ; Zhang, Shuqin ; Cheng, Weijun ; Zhao, Linyuan ; Xu, Jun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-42a0ee870ef8ff4b169219cbf3affb725db2a63ca7337db5a7ebbe6118889c853</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Applied physics</topic><topic>Design optimization</topic><topic>Electromagnetic absorption</topic><topic>Electromagnetic fields</topic><topic>Gold</topic><topic>Illumination</topic><topic>Light</topic><topic>Molybdenum compounds</topic><topic>Nanoparticles</topic><topic>Optoelectronic devices</topic><topic>Photoelectric effect</topic><topic>Photoelectric emission</topic><topic>Phototransistors</topic><topic>Tellurides</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Wenjie</creatorcontrib><creatorcontrib>Liang, Renrong</creatorcontrib><creatorcontrib>Liu, Yu</creatorcontrib><creatorcontrib>Zhang, Shuqin</creatorcontrib><creatorcontrib>Cheng, Weijun</creatorcontrib><creatorcontrib>Zhao, Linyuan</creatorcontrib><creatorcontrib>Xu, Jun</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Wenjie</au><au>Liang, Renrong</au><au>Liu, Yu</au><au>Zhang, Shuqin</au><au>Cheng, Weijun</au><au>Zhao, Linyuan</au><au>Xu, Jun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Surface plasmon-enhanced photodetection in MoTe2 phototransistors with Au nanoparticles</atitle><jtitle>Applied physics letters</jtitle><date>2019-09-30</date><risdate>2019</risdate><volume>115</volume><issue>14</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>An effective method to improve the photoresponse of MoTe2 phototransistors by decorating with Au nanoparticles (Au NPs) is demonstrated. The Au NPs can concentrate a strong electromagnetic field around them by localized surface plasmon resonances. As a result, the light absorption of MoTe2 films could be enhanced significantly. After optimized design with Au NPs, a more than 200 times increase in the photocurrent is observed under illumination of both 365 and 405 nm light. Furthermore, the responsivities are changed from 0.61 to 398 A/W under 365 nm light illumination and from 0.43 to 220 A/W under 405 nm light illumination after decorating Au NPs onto the MoTe2 phototransistors. These findings offer an avenue for practical applications of high performance MoTe2 optoelectronic devices in the future.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5116644</doi><tpages>4</tpages></addata></record> |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Design optimization Electromagnetic absorption Electromagnetic fields Gold Illumination Light Molybdenum compounds Nanoparticles Optoelectronic devices Photoelectric effect Photoelectric emission Phototransistors Tellurides |
| title | Surface plasmon-enhanced photodetection in MoTe2 phototransistors with Au nanoparticles |
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