title: Flexible, High-Speed CdSe Nanocrystal Integrated Circuits.
abstract: We report large-area, flexible, high-speed analog and digital colloidal CdSe nanocrystal integrated circuits operating at low voltages. Using photolithography and a newly developed process to fabricate vertical interconnect access holes, we scale down device dimensions, reducing parasitic capacitances and increasing the frequency of circuit operation, and scale up device fabrication over 4 in. flexible substrates. We demonstrate amplifiers with ∼7 kHz bandwidth, ring oscillators with <10 μs stage delays, and NAND and NOR logic gates.
authors.affiliation: Department of Electrical and Systems Engineering, ‡Department of Chemistry, and §Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: F Scott
authors.initials: FS
authors.lastname: Stinner
authors.affiliation: Department of Electrical and Systems Engineering, ‡Department of Chemistry, and §Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: Yuming
authors.initials: Y
authors.lastname: Lai
authors.affiliation: Department of Electrical and Systems Engineering, ‡Department of Chemistry, and §Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: Daniel B
authors.initials: DB
authors.lastname: Straus
authors.affiliation: Department of Electrical and Systems Engineering, ‡Department of Chemistry, and §Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: Benjamin T
authors.initials: BT
authors.lastname: Diroll
authors.affiliation: Department of Electrical and Systems Engineering, ‡Department of Chemistry, and §Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: David K
authors.initials: DK
authors.lastname: Kim
authors.affiliation: Department of Electrical and Systems Engineering, ‡Department of Chemistry, and §Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: Christopher B
authors.initials: CB
authors.lastname: Murray
authors.affiliation: Department of Electrical and Systems Engineering, ‡Department of Chemistry, and §Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: Cherie R
authors.initials: CR
authors.lastname: Kagan
keywords: CdSe; flexible; integrated circuits; logic gates; nanocrystals; ring oscillators