Instant Writing of Conductive Interface on MOF Single Crystal by Ultrafast Laser.

ABSTRACT: Single crystals with excellent properties have been widely used in electronics industries due to their homogeneous and consistent structures. Metal-organic frameworks (MOFs), as a class of crystalline materials that can be synthetically tuned for functionality, are expected to be a favorable candidate for novel electronic devices. However, there is still a lack of methods to efficiently fabricate conductive patterns at the single-crystal scale. Here, laser instant writing of in situ continuous conductive interface on MOF single crystals is reported, enabling the patterning and continuous fabrication of conductive interface at the single-crystal scale. Carbon-wrapped Cu nanoparticles (Cu@C NPs) conductive interface is instantly written using a 1030 nm picosecond ultrafast laser on large HKUST-1 single crystals. It is found that different thermal accumulations can affect the conductivity of Cu@C and transformation of matter phase from Cu NPs to Cu₂O on single crystals is observed as the ablation of carbonaceous materials. As a validation, single-crystal sensor with interdigitated electrodes (IDEs) constructed by laser interface technique shows a wide response range of 5%-90% RH and a fast response time of 2 s toward humidity sensing. This method sheds new light on the construction of functional interface on single MOF crystal, providing a novel strategy for MOF-based electronics.

SUBMITTER: Huang D 

PROVIDER: S-EPMC12376616 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature