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Updated: Feb 14, 2026

Production and Targeting of Monovalent Quantum Dots
Published on: October 23, 2014
Large-Area Heterostructures from Graphene and Encapsulated Colloidal Quantum Dots via the Langmuir-Blodgett Method
Andrés Black1, Jonathan Roberts2, María Acebrón1
1IMDEA Nanoscience , 28049 Madrid, Spain.
Abstract:
This work explores the assembly of large-area heterostructures comprised of a film of silica-encapsulated, semiconducting colloidal quantum dots, deposited via the Langmuir-Blodgett method, sandwiched between two graphene sheets. The luminescent, electrically insulating film served as a dielectric, with the top graphene sheet patterned into an electrode and successfully used as a top gate for an underlying graphene field-effect transistor. This heterostructure paves the way for developing novel hybrid optoelectronic devices through the integration of 2D and 0D materials.
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