Semiconductor nanoparticle-based detection
AssigneeThe Regents of the University of Michigan
InventorsMark Hammig, Nicholas Kotov
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Abstract
A detector includes a substrate including a matrix of aramid nanofibers, a distribution of nanoparticles across the matrix of aramid nanofibers, and a plurality of organic capping ligands. Each organic capping ligand of the plurality of organic capping ligands bonds a respective nanoparticle of the plurality of nanoparticles to a respective aramid nanofiber of the matrix of aramid nanofibers. The detector further includes first and second electrodes disposed along opposite sides of the substrate to capture charges generated by photons or particles incident upon the detector. Each nanoparticle of the plurality of nanoparticles has a semiconductor composition.
Claims20
A detector comprising:
- a substrate comprising a matrix of aramid nanofibers;
- a distribution of nanoparticles across the matrix of aramid nanofibers;
- a plurality of organic capping ligands, each organic capping ligand of the plurality of organic capping ligands bonding a respective nanoparticle of the distribution of nanoparticles to a respective aramid nanofiber of the matrix of aramid nanofibers;
- and
- first and second electrodes disposed along opposite sides of the substrate to capture charges generated by photons or particles incident upon the detector;
- wherein each nanoparticle of the distribution of nanoparticles has a semiconductor composition.
A detector comprising:
- a substrate comprising a matrix of aramid nanofibers;
- a distribution of nanoparticles across the matrix of aramid nanofibers;
- a plurality of organic capping ligands, each organic capping ligand of the plurality of organic capping ligands bonding a respective nanoparticle of the distribution of nanoparticles to a respective aramid nanofiber of the matrix of aramid nanofibers;
- first and second electrodes disposed along opposite sides of the substrate to capture charges generated by photons or particles incident upon the detector;
- and
- a plurality of metal nanoparticles distributed across the matrix of aramid nanofibers;
- wherein each nanoparticle of the distribution of nanoparticles has a semiconductor composition.
A method of fabricating a detector, the method comprising:
- preparing a film comprising a matrix of aramid nanofibers;
- synthesizing, in a solution, a plurality of nanoparticles, each nanoparticle of the plurality of nanoparticles being synthesized such that an organic capping ligand is attached to the nanoparticle;
- and
- infiltrating the film with the plurality of nanoparticles such that each nanoparticle of the plurality of nanoparticles is bonded to a respective aramid nanofiber of the matrix of aramid nanofibers via the organic capping ligand;
- wherein each nanoparticle of the plurality of nanoparticles has a semiconductor composition.
Dependencies are inferred from the claim text.