Kavli Energy NanoScience Institute

Compositional control of magnetocaloric performance and energy losses in LaFe11.5−( x + y )Co x Ni y Si1.5 alloys

Alloys of La(Fe,Si)13 with transition metal substitutions are promising magnetocaloric materials. Here, we systematically investigate Co and Ni substitution in LaFe11.5−(x+y)CoxNiySi1.5 to tune the magnetic and structural properties and assess the resulting impacts on magnetocalo...

Narrow-Line-Width Electroluminescence in Monolayer WSe2 Enabled by a Sub-5 nm Au/Pt Nanogap

Abstract Spectrally isolated, electrically driven emission from localized states in two-dimensional semiconductors remains challenging in scalable planar devices. Here, we report narrow-line-width alternating-current electroluminescence (ACEL) from localized states in monolayer W...

Polymer-Free Assembly of Unencapsulated van der Waals Heterostructure Devices

Abstract van der Waals (vdW) heterostructures provide a versatile platform for exploring emergent quantum phenomena, yet their fabrication is often limited by interfacial contamination and incompatibility with surface-sensitive characterization. Here, we demonstrate muscovite mic...

Hydration-dependent exciton-phonon coupling in a metal-organic framework photocatalyst

Abstract Metal-organic frameworks (MOFs) have potential for light-harvesting applications owing to their tunable optoelectronic properties via building block selection. The presence of bound solvent in MOFs is known to impact gas adsorption properties, but little is known about t...