Diana Y. Qiu

TL;DR: The renormalized bandgap and large exciton binding observed here will have a profound impact on electronic and optoelectronic device technologies based on single-layer semiconducting TMDs.

TL;DR: It is shown that monolayer MoS2 possesses a large and diverse number of strongly bound excitonic states with novel k-space characteristics that were not previously seen experimentally or theoretically.

TL;DR: In this paper, the single-particle electronic bandgap of single-layer metal dichalcogenides (TMDs) was determined using scanning tunneling spectroscopy (STS) and photoluminescence spectrograms (PL).

TL;DR: It is experimentally demonstrated that the electronic structure of few-layer phosphorene varies significantly with the number of layers, in good agreement with theoretical predictions, and the interband optical transitions cover a wide, technologically important spectral range.

TL;DR: This work demonstrates the evolution of interlayer coupling with twist angles in as-grown molybdenum disulfide bilayers and finds that the indirect bandgap size varies appreciably with the stacking configuration: it shows the largest redshift for AA- and AB-stacked bilayers, and a significantly smaller but constantRedshift for all other twist angles.