Structural and electronic switching of a single crystal 2D metal-organic framework prepared by chemical vapor deposition

• DOI: 10.1038/s41467-020-19220-y
• Publication Date: 2020-11-02T11:24:59Z
• Authors: F. James Claire; Marina A. Solomos; Jungkil Kim; Gaoqiang Wang; Maxime A. Siegler; Michael F. Crommie; Thomas J. Kempa
• Keywords: Crystal (programming language)

Abstract The incorporation of metal-organic frameworks into advanced devices remains a desirable goal, but progress is hindered by difficulties in preparing large crystalline framework films with suitable electronic performance. We demonstrate the direct growth large-area, high quality, and phase pure single crystals through chemical vapor deposition dimolybdenum paddlewheel precursor, Mo 2 (INA) 4 . These exceptionally uniform, quality cover areas up to 8600 µm can be grown down thicknesses 30 nm. Moreover, scanning tunneling microscopy indicates that clusters assemble two-dimensional, single-layer framework. Devices are readily fabricated from vapor-phase exhibit reversible 8-fold changes conductivity upon illumination at modest powers. we identify vapor-induced crystal transitions responsible for 30-fold as monitored situ device measurements. Gas-phase methods, including deposition, show broader promise preparation high-quality molecular frameworks, may enable their integration devices, detectors actuators.