Ultrafast and spatially resolved studies of charge carriers in atomically thin molybdenum disulfide
Atomically thin molybdenum disulfide is emerging as a new nanomaterial with potential applications in the fields of electronic and photonics. Charge carrier dynamics plays an essential role in determining its electronic and optical properties. We report spatially and temporally resolved pump-probe s...
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| Veröffentlicht in: | Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-07, Vol.86 (4), Article 045406 |
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| container_title | Physical review. B, Condensed matter and materials physics |
| container_volume | 86 |
| creator | Wang, Rui Ruzicka, Brian A. Kumar, Nardeep Bellus, Matthew Z. Chiu, Hsin-Ying Zhao, Hui |
| description | Atomically thin molybdenum disulfide is emerging as a new nanomaterial with potential applications in the fields of electronic and photonics. Charge carrier dynamics plays an essential role in determining its electronic and optical properties. We report spatially and temporally resolved pump-probe studies of charge carriers in atomically thin molybdenum disulfide samples fabricated by mechanical exfoliation. Carriers are injected by interband absorption of a 390-nm pump pulse and detected by measuring differential reflection of a time-delayed and spatially scanned probe pulse that is tuned to an exciton transition. Several parameters on charge carrier dynamics are deduced, including carrier lifetime, diffusion coefficient, diffusion length, and mobility. |
| doi_str_mv | 10.1103/PhysRevB.86.045406 |
| format | Article |
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B, Condensed matter and materials physics</title><description>Atomically thin molybdenum disulfide is emerging as a new nanomaterial with potential applications in the fields of electronic and photonics. Charge carrier dynamics plays an essential role in determining its electronic and optical properties. We report spatially and temporally resolved pump-probe studies of charge carriers in atomically thin molybdenum disulfide samples fabricated by mechanical exfoliation. Carriers are injected by interband absorption of a 390-nm pump pulse and detected by measuring differential reflection of a time-delayed and spatially scanned probe pulse that is tuned to an exciton transition. Several parameters on charge carrier dynamics are deduced, including carrier lifetime, diffusion coefficient, diffusion length, and mobility.</description><subject>Charge carriers</subject><subject>Condensed matter</subject><subject>Dynamics</subject><subject>Electronics</subject><subject>Molybdenum disulfide</subject><subject>Optical properties</subject><subject>Pumps</subject><subject>Reflection</subject><issn>1098-0121</issn><issn>1550-235X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNo1kMtKAzEUhoMoWKsv4CpLN1NzcpnLUos3EBSx4C5kcrGRTKcmmcK8vVOrq__8h--cxYfQJZAFAGHXr-sxvdnd7aIuF4QLTsojNAMhSEGZ-DieZtLUBQEKp-gspS9CgDeczpBehRyVUyljtTE4bVX2KoQRR5v6sLPTKg_G24R7h_VaxU-LtYrR25iw32CV-87r34u8nnrXh7E1djN02Pg0BOeNPUcnToVkL_5yjlb3d-_Lx-L55eFpefNcaM6aXLTOWMYbIJpqKjgIXVPDKmNbIxitoGwNuLrWVclbpymA4hVhQvG6YlRxxubo6vB3G_vvwaYsO5-0DUFtbD8kCRVpqr0cmFB6QHXsU4rWyW30nYqjBCL3RuW_UVmX8mCU_QB7E20N</recordid><startdate>20120705</startdate><enddate>20120705</enddate><creator>Wang, Rui</creator><creator>Ruzicka, Brian A.</creator><creator>Kumar, Nardeep</creator><creator>Bellus, Matthew Z.</creator><creator>Chiu, Hsin-Ying</creator><creator>Zhao, Hui</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20120705</creationdate><title>Ultrafast and spatially resolved studies of charge carriers in atomically thin molybdenum disulfide</title><author>Wang, Rui ; Ruzicka, Brian A. ; Kumar, Nardeep ; Bellus, Matthew Z. ; Chiu, Hsin-Ying ; Zhao, Hui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c439t-bfde34910c2c25415c82d37debd532716bd1f88c764bfc211a47035a48732a433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Charge carriers</topic><topic>Condensed matter</topic><topic>Dynamics</topic><topic>Electronics</topic><topic>Molybdenum disulfide</topic><topic>Optical properties</topic><topic>Pumps</topic><topic>Reflection</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Rui</creatorcontrib><creatorcontrib>Ruzicka, Brian A.</creatorcontrib><creatorcontrib>Kumar, Nardeep</creatorcontrib><creatorcontrib>Bellus, Matthew Z.</creatorcontrib><creatorcontrib>Chiu, Hsin-Ying</creatorcontrib><creatorcontrib>Zhao, Hui</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. 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We report spatially and temporally resolved pump-probe studies of charge carriers in atomically thin molybdenum disulfide samples fabricated by mechanical exfoliation. Carriers are injected by interband absorption of a 390-nm pump pulse and detected by measuring differential reflection of a time-delayed and spatially scanned probe pulse that is tuned to an exciton transition. Several parameters on charge carrier dynamics are deduced, including carrier lifetime, diffusion coefficient, diffusion length, and mobility.</abstract><doi>10.1103/PhysRevB.86.045406</doi><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 1098-0121 |
| ispartof | Physical review. B, Condensed matter and materials physics, 2012-07, Vol.86 (4), Article 045406 |
| issn | 1098-0121 1550-235X |
| language | eng |
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| source | American Physical Society Journals |
| subjects | Charge carriers Condensed matter Dynamics Electronics Molybdenum disulfide Optical properties Pumps Reflection |
| title | Ultrafast and spatially resolved studies of charge carriers in atomically thin molybdenum disulfide |
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