The exciton binding energy (Eb) is a key parameter that governs the physics of many
optoelectronic devices. At their best, trustworthy and precise measurements of Eb challenge …

Heterobilayers of transition metal dichalcogenides (TMDCs) can form a moiré superlattice
with flat minibands, which enables strong electron interaction and leads to various …

Beginning with the “conventional” two-dimensional (2D) quantum wells based on III–V and II–
VI semiconductors in the 1970s, to the recent atomically thin sheets of van der Waals …

Moiré superlattices of semiconducting transition metal dichalcogenides enable
unprecedented spatial control of electron wavefunctions, leading to emerging quantum …

Ordered atomic arrays with subwavelength spacing have emerged as an efficient and
versatile light-matter interface, where collective interactions give rise to sets of super-and …

Rydberg excitons are, with their ultrastrong mutual interactions, giant optical nonlinearities,
and very high sensitivity to external fields, promising for applications in quantum sensing …

We observe both s-series and p-series excitons by using sum frequency generation
spectroscopy on monolayer (1L-) MX2 (M= Mo, W, X= S, Se) encapsulated by hexagonal …

Semiconducting transition metal dichalcogenides of group VI are well known for their
prominent excitonic effects and the transition from an indirect to a direct band gap when …

We present a model of diamagnetic shifts for two-dimensional Wannier-Mott excitons in out-
of-plane magnetic fields, including environmental dielectric effects. We indicate the reasons …

The enhanced Coulomb interaction in two-dimensional semiconductors leads to tightly
bound electron–hole pairs known as excitons. The large binding energy of excitons enables …