Journal Article 2D materials Review 7782-42-5 Graphite Research Support, Non-U.S. Gov't ambipolar comminution field-effect transistors graphene heterostructures high efficiency high mobility high pressure high stability honeycomb lithium-ion batteries low temperature molybdenum sulfide nanoslices palladium diselenide perovskite light-emitting diodes perovskite nanocrystals recrystallization self-assembly stacking transition metal dichalcogenides twist angle