Prefer a chat interface with context about you and your work?
Electronic properties of the MoS<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>-WS<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>heterojunction
We study the electronic structure of a heterojunction made of two monolayers of MoS${}_{2}$ and WS${}_{2}$. Our first-principles density functional calculations show that, unlike in the homogeneous bilayers, the heterojunction has an optically active band gap, smaller than the ones of MoS${}_{2}$ and WS${}_{2}$ single layers. We find that the …