Adams St. Block Party
The Sheraton Difference

The 2D World

The question is always this: keep going with the materials that I am currently growing, or dedicate time to trying new materials.  Its an age-old dilemma of not wanting to start over vs not wanting to be stuck on a path that less productive.  In the world of 2D materials, this dilemma takes the form of sticking to the tried-and-true family of TMDC's (MoS2, MoSe2, WS2, WSE2), or to journey out into the uncharted waters of TMDC's where the metal is not M or W.  It also means journeying out into the really uncharted waters of 3-6 and 4-6 binary 2D materials, such as SnS and GeSe.  The prospect of growing these materials in large scale is tantalizing, if nothing other than for the prospect of having a complete library of 2D materials accessible at the wafer scale.  I give much thanks to Yuda Zhao, who presented on PtS2, as well as for several others who presented on materials such as SnS.  As a grower, I see small-scale proof-of-concepts as an encouraging sign that large-scale growth could be fruitful.  After seeing the world of 2D materials on display here at MRS, I am encouraged that we will soon have access to them at the large scale, enabling a great variety of 2D devices to be made in the future.

-John

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