![]() 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 MoS 2 grown on c-plane sapphire. These dramatic enhancements in optical properties are similar to those of super-acid treated MoS 2, and suggest that the electronic properties of the MoS 2 are also superior. We demonstrate that enhanced photoluminescence can be robustly engineered via the proper choice of substrate, where growth of MoS 2 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 MoS 2 on c-plane sapphire. ![]() In this work, we deconvolute the photonic and electronic response of synthetic monolayer molybdenum disulfide. 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. ![]() Evaluating and tuning the properties of two-dimensional (2D) materials is a major focus of advancing 2D science and technology.
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