Broadband miniaturized spectrometers with van der Waals junctions

Abstract

Miniaturized spectrometers are crucial for applications in on-chip and implantable devices, requiring high spectral resolution in limited spaces. Here, we present our van der Waals heterojunction-based spectrometers that achieve tunable spectral responses through band structure engineering, offering sub-nanometer wavelength resolution and a broad operational bandwidth of similar to 500 to 1600 nanometers.