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Updated: Sep 24, 2025
Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
Published on: March 13, 2017
Heterogeneous semiconductor nanowire array for sensitive broadband photodetector by crack photolithography-based
Qitao Zhou1, Jun Gyu Park2, Taesung Kim2
1Engineering Research Center of Nano-Geomaterials of the Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China.
Abstract:
The in situ growth of nanowires (NWs) into nano-/microelectromechanical systems (NEMS/MEMS) by solution processing is attractive for its relative simplicity and economic value. We present innovative, versatile microfabrication that produces multiple, heterogeneous semiconductor NWs. A crack photolithography-based micro-/nanofluidic platform has been developed. This platform offers the in situ solution growth of NWs while enabling the control of quantity, dimensions, orientation, alignment, position, and material. The generation of grain boundary (GB)-rich CH3NH3PbI3 NWs using the micro-/nanofluidic device is exemplary. High-quality single-crystal CH3NH3PbI3 NWs were derived by injection of a CH3NH3PbI3 solution. We produced a parallel NW array of CH3NH3PbI3 NW for visible light detection and ZnO NW for ultraviolet detection, thereby demonstrating an unprecedented broadband composite photodetector. The micro-/nanofluidic fabrication platform enables the production of multiple, heterogeneous semiconductor NW arrays on one substrate, offering the potential to elicit synergistic performance and functional enhancements from various NWs.
