Blueshift of the A-exciton peak in folded monolayer 1H-MoS sub(2)
The large family of layered transition-metal dichalcogenides is widely believed to constitute a second family of two-dimensional (2D) semiconducting materials that can be used to create novel devices that complement those based on graphene. In many cases these materials have shown a transition from...
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| Veröffentlicht in: | Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2013-12, Vol.88 (23) |
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| container_title | Physical review. B, Condensed matter and materials physics |
| container_volume | 88 |
| creator | Crowne, Frank J Amani, Matin Birdwell, A Glen Chin, Matthew L O'Regan, Terrance P Najmaei, Sina Liu, Zheng Ajayan, Pulickel M Lou, Jun Dubey, Madan |
| description | The large family of layered transition-metal dichalcogenides is widely believed to constitute a second family of two-dimensional (2D) semiconducting materials that can be used to create novel devices that complement those based on graphene. In many cases these materials have shown a transition from an indirect band gap in the bulk to a direct band gap in monolayer systems. In this work we experimentally show that folding a 1H molybdenum disulfide (MoS sub(2)) layer results in a turbostratic stack with enhanced photoluminescence quantum yield and a significant shift to the blue by ~90 meV. This is in contrast to the expected 2H-MoS sub(2) band-structure characteristics, which include an indirect gap and quenched photoluminescence. We present a theoretical explanation for the origin of this behavior in terms of exciton screening. |
| format | Article |
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We present a theoretical explanation for the origin of this behavior in terms of exciton screening.</description><subject>Band structure of solids</subject><subject>Complement</subject><subject>Condensed matter</subject><subject>Graphene</subject><subject>Molybdenum disulfide</subject><subject>Monolayers</subject><subject>Photoluminescence</subject><subject>Quenching (cooling)</subject><subject>Two dimensional</subject><issn>1098-0121</issn><issn>1550-235X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqVjL0OgjAYABujifjzDt-IQ5O2QIARjYbFSQc3UuEjoKVFWhJ9exl8Aae74XIz4vEoYlQE0W0-OUsTyrjgS7Ky9sEYD9NQeCTbqxFt09YOTA2uQcgovsvWGQ09yie0GmqjKqygM9oo-cEBeE7P5gJ2vPtityGLWiqL2x_XxD8dr4ec9oN5TW9XdK0tUSmp0Yy24DHjLImDRAR_pF8sSDz_</recordid><startdate>20131215</startdate><enddate>20131215</enddate><creator>Crowne, Frank J</creator><creator>Amani, Matin</creator><creator>Birdwell, A Glen</creator><creator>Chin, Matthew L</creator><creator>O'Regan, Terrance P</creator><creator>Najmaei, Sina</creator><creator>Liu, Zheng</creator><creator>Ajayan, Pulickel M</creator><creator>Lou, Jun</creator><creator>Dubey, Madan</creator><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20131215</creationdate><title>Blueshift of the A-exciton peak in folded monolayer 1H-MoS sub(2)</title><author>Crowne, Frank J ; Amani, Matin ; Birdwell, A Glen ; Chin, Matthew L ; O'Regan, Terrance P ; Najmaei, Sina ; Liu, Zheng ; Ajayan, Pulickel M ; Lou, Jun ; Dubey, Madan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_miscellaneous_17010873823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Band structure of solids</topic><topic>Complement</topic><topic>Condensed matter</topic><topic>Graphene</topic><topic>Molybdenum disulfide</topic><topic>Monolayers</topic><topic>Photoluminescence</topic><topic>Quenching (cooling)</topic><topic>Two dimensional</topic><toplevel>online_resources</toplevel><creatorcontrib>Crowne, Frank J</creatorcontrib><creatorcontrib>Amani, Matin</creatorcontrib><creatorcontrib>Birdwell, A Glen</creatorcontrib><creatorcontrib>Chin, Matthew L</creatorcontrib><creatorcontrib>O'Regan, Terrance P</creatorcontrib><creatorcontrib>Najmaei, Sina</creatorcontrib><creatorcontrib>Liu, Zheng</creatorcontrib><creatorcontrib>Ajayan, Pulickel M</creatorcontrib><creatorcontrib>Lou, Jun</creatorcontrib><creatorcontrib>Dubey, Madan</creatorcontrib><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. 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| ispartof | Physical review. B, Condensed matter and materials physics, 2013-12, Vol.88 (23) |
| issn | 1098-0121 1550-235X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1701087382 |
| source | American Physical Society Journals |
| subjects | Band structure of solids Complement Condensed matter Graphene Molybdenum disulfide Monolayers Photoluminescence Quenching (cooling) Two dimensional |
| title | Blueshift of the A-exciton peak in folded monolayer 1H-MoS sub(2) |
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