Deconvoluting the Photonic and Electronic Response of 2D Materials: The Case of MoS2
Abstract
Evaluating and tuning the properties of two-dimensional (2D) materials is a major focus of advancing 2D science and technology. While many claim that the photonic properties of a 2D layer provide evidence that the material is "high quality", this may not be true for electronic performance. In this work, we deconvolute the photonic and electronic response of synthetic monolayer molybdenum disulfide. We demonstrate that enhanced photoluminescence can be robustly engineered via the proper choice of substrate, where growth of MoS2 on r-plane sapphire can yield > 100x enhancement in PL and carrier lifetime due to increased molybdenum-oxygen bonding compared to that of traditionally grown MoS2 on c-plane sapphire. These dramatic enhancements in optical properties are similar to those of super-acid treated MoS2 , and suggest that the electronic properties of the MoS2 are also superior. However, a direct comparison of the charge transport properties indicates that the enhanced PL due to increased Mo-O bonding leads to p-type compensation doping, and is accompanied by a 2x degradation in transport properties compared to MoS2 grown on c-plane sapphire. This work provides a foundation for understanding the link between photonic and electronic performance of 2D semiconducting layers, and demonstrates that they are notmore »
- Authors:
-
- Pennsylvania State Univ., University Park, PA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Univ. of Pittsburgh, PA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1416942
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Zhang, Kehao, Borys, Nicholas J., Bersch, Brian M., Bhimanapati, Ganesh R., Xu, Ke, Wang, Baoming, Wang, Ke, Labella, Michael, Williams, Teague A., Haque, Md Amanul., Barnard, Edward S., Fullerton-Shirey, Susan, Schuck, P. James, and Robinson, Joshua A. Deconvoluting the Photonic and Electronic Response of 2D Materials: The Case of MoS2. United States: N. p., 2017.
Web. doi:10.1038/s41598-017-16970-6.
Zhang, Kehao, Borys, Nicholas J., Bersch, Brian M., Bhimanapati, Ganesh R., Xu, Ke, Wang, Baoming, Wang, Ke, Labella, Michael, Williams, Teague A., Haque, Md Amanul., Barnard, Edward S., Fullerton-Shirey, Susan, Schuck, P. James, & Robinson, Joshua A. Deconvoluting the Photonic and Electronic Response of 2D Materials: The Case of MoS2. United States. https://doi.org/10.1038/s41598-017-16970-6
Zhang, Kehao, Borys, Nicholas J., Bersch, Brian M., Bhimanapati, Ganesh R., Xu, Ke, Wang, Baoming, Wang, Ke, Labella, Michael, Williams, Teague A., Haque, Md Amanul., Barnard, Edward S., Fullerton-Shirey, Susan, Schuck, P. James, and Robinson, Joshua A. Tue .
"Deconvoluting the Photonic and Electronic Response of 2D Materials: The Case of MoS2". United States. https://doi.org/10.1038/s41598-017-16970-6. https://www.osti.gov/servlets/purl/1416942.
@article{osti_1416942,
title = {Deconvoluting the Photonic and Electronic Response of 2D Materials: The Case of MoS2},
author = {Zhang, Kehao and Borys, Nicholas J. and Bersch, Brian M. and Bhimanapati, Ganesh R. and Xu, Ke and Wang, Baoming and Wang, Ke and Labella, Michael and Williams, Teague A. and Haque, Md Amanul. and Barnard, Edward S. and Fullerton-Shirey, Susan and Schuck, P. James and Robinson, Joshua A.},
abstractNote = {Evaluating and tuning the properties of two-dimensional (2D) materials is a major focus of advancing 2D science and technology. While many claim that the photonic properties of a 2D layer provide evidence that the material is "high quality", this may not be true for electronic performance. In this work, we deconvolute the photonic and electronic response of synthetic monolayer molybdenum disulfide. We demonstrate that enhanced photoluminescence can be robustly engineered via the proper choice of substrate, where growth of MoS2 on r-plane sapphire can yield > 100x enhancement in PL and carrier lifetime due to increased molybdenum-oxygen bonding compared to that of traditionally grown MoS2 on c-plane sapphire. These dramatic enhancements in optical properties are similar to those of super-acid treated MoS2 , and suggest that the electronic properties of the MoS2 are also superior. However, a direct comparison of the charge transport properties indicates that the enhanced PL due to increased Mo-O bonding leads to p-type compensation doping, and is accompanied by a 2x degradation in transport properties compared to MoS2 grown on c-plane sapphire. This work provides a foundation for understanding the link between photonic and electronic performance of 2D semiconducting layers, and demonstrates that they are not always correlated.},
doi = {10.1038/s41598-017-16970-6},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {Tue Dec 05 00:00:00 EST 2017},
month = {Tue Dec 05 00:00:00 EST 2017}
}
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Works referencing / citing this record:
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