Deconvoluting the Photonic and Electronic Response of 2D Materials

The Case of MoS2

Kehao Zhang, Nicholas J. Borys, Brian M. Bersch, Ganesh R. Bhimanapati, Ke Xu, Baoming Wang, Ke Wang, Michael Labella, Teague A. Williams, Md Amanul Haque, Edward S. Barnard, Susan Fullerton-Shirey, P. James Schuck, Joshua Alexander Robinson

Research output: Contribution to journalArticle

11 Citations (Scopus)

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 not always correlated.

Original languageEnglish (US)
Article number16938
JournalScientific reports
Volume7
Issue number1
DOIs
StatePublished - Dec 1 2017

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Optics and Photonics
Aluminum Oxide
Molybdenum
Oxygen
Technology
Acids
Growth

All Science Journal Classification (ASJC) codes

  • General

Cite this

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 Alexander. / Deconvoluting the Photonic and Electronic Response of 2D Materials : The Case of MoS2. In: Scientific reports. 2017 ; Vol. 7, No. 1.
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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 not always correlated.",
author = "Kehao Zhang and Borys, {Nicholas J.} and Bersch, {Brian M.} and Bhimanapati, {Ganesh R.} and Ke Xu and Baoming Wang and Ke Wang and Michael Labella and Williams, {Teague A.} and Haque, {Md Amanul} and Barnard, {Edward S.} and Susan Fullerton-Shirey and Schuck, {P. James} and Robinson, {Joshua Alexander}",
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Zhang, K, Borys, NJ, Bersch, BM, Bhimanapati, GR, Xu, K, Wang, B, Wang, K, Labella, M, Williams, TA, Haque, MA, Barnard, ES, Fullerton-Shirey, S, Schuck, PJ & Robinson, JA 2017, 'Deconvoluting the Photonic and Electronic Response of 2D Materials: The Case of MoS2', Scientific reports, vol. 7, no. 1, 16938. https://doi.org/10.1038/s41598-017-16970-6

Deconvoluting the Photonic and Electronic Response of 2D Materials : The Case of MoS2. / 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 Alexander.

In: Scientific reports, Vol. 7, No. 1, 16938, 01.12.2017.

Research output: Contribution to journalArticle

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T2 - The Case of MoS2

AU - Zhang, Kehao

AU - Borys, Nicholas J.

AU - Bersch, Brian M.

AU - Bhimanapati, Ganesh R.

AU - Xu, Ke

AU - Wang, Baoming

AU - Wang, Ke

AU - Labella, Michael

AU - Williams, Teague A.

AU - Haque, Md Amanul

AU - Barnard, Edward S.

AU - Fullerton-Shirey, Susan

AU - Schuck, P. James

AU - Robinson, Joshua Alexander

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