Thermally Driven Crossover from Indirect toward Direct Bandgap in 2D Semiconductors: MoSe 2 versus MoS 2

Layered semiconductors based on transition-metal chalcogenides usually cross from indirect bandgap in the bulk limit over to direct bandgap in the quantum (2D) limit. Such a crossover can be achieved by peeling off a multilayer sample to a single layer. For exploration of physical behavior and devic... View More