Carbon-based Hierarchically Integrated Synthetic Electronics (CHISEL)
Abstract
Title: Carbon-based Hierarchically Integrated Synthetic Electronics (CHISEL)Objective: Main goals of the MURI project are (i) to systematically improve our bottom-up synthesis capabilities, (ii) to improve our abilities to characterize bottom-up nanostructures in different device environments, and (iii) to improve our understanding of the microscopic physicalmechanisms that determine bottom-up GNR behavior at different length scales.Approach:MURI team will pursue three main thrusts in this project.Thrust 1: Bottom-up synthesis and characterization of nanoribbon elements (Fischer ~ co-leader, Crommie ~ co-leader)1.1 Develop new dopant-based GNR functionalization1.2. Develop deterministic, atomically-precise GNR heterojunctions1.3. Develop new synthetic routes for producing GNR systems 1.4. Develop new theoretical and experimental tools for characterizing bottom-up GNRsThrust 2: Integrating top-down and bottom-up building blocks (Kim ~ co-leader, Nuckolls ~ co-leader)2.1. Develop flexible, high quality metal contacts to GNR elements2.2. Develop techniques to electrically contact nanoscale GNR elements to mesoscale graphene-based electrodes2.3. Develop multi-electrode GNR-based devices2.4. Perform new field-dependent, temperature-dependent, spin-dependent, strain-dependent, and photo-dependent GNR device measurementsThrust 3: Large-scale synthetic electronics architectures (Bokor ~ co-leader, Wang ~ co-leader)3.1. Develop dense parallel arrays of GNRs3.2. Develop new GNR labeling and alignment methods for assembling multiple GNR device elements3.3. Develop new super-resolution optical microscopy techniques for accurate, high throughput GNR imaging SOW:Project Schedule and MilestonesThrust 1Year 1: (a) Perform DFT calculations to determine stability of different bottom-up GNRs and doping configurations. (b) Develop ~backbone-doping~ strategy to introduce p and n-type dopant atoms. (c) Determine GNR quasiparticle energy gaps and electron wavefunctions using STS spectroscopy. (d) Determine excitonic transitions and exciton binding energies using combined optical spectroscopy and STS studies.Year 2: (a) Perform surface synthesis of GNR p-n junctions. (b) Integrate porphyrin molecular dopants into bottom-up GNR segments to form quantum dots. (c) Synthesize deterministic, single-junction heterostructures using temperature-programmable dehalogenation at a surface. (d) Synthesize helical GNR ribbons involving alkyl substituents in cove-type edges. (e) Characterize the band alignment in different GNR heterostructures.Year 3: (a) Incorporate a dense array of N atoms along an armchair GNR backbone to form metallic GNRs. (b) Synthesize GNRs with engineered dipole and quadrupole dopant structures. (c) Characterize tunnel barrier between the continuum states of the nanoribbon and the sharp states of a QD. (d) Incorporate Fe, Co, and Ni atoms within porphyrin groups to form spin centers in bottom-up GNRs. (e) Synthesize single-junction GNR heterostructures. (f) Investigate Luttinger liquid behavior in GNRs.Year 4: (a) Synthesize deterministic single-junction GNRs using Diels-Alder polymerization. (b) Grow bottom-up GNRs on insulating substrates using thermally and/or photochemically reactive functional groups. (c) Synthesize and characterize new zigzag GNRs. (d) Probe local magnetic structure of GNRs having spin centers with spin-polarized STM spectroscopy.Year 5: (a) Probe charge-transfer exciton transitions and dynamic evolution in GNR heterostructures. (b) Spatially map charge transfer excitons for GNR p-n junctions using STS. (c) Probe ultra-high inductance and possible enhanced magnetoresistance in helical GNRs. (d) Combine theoretical, optical, STS, and transport studies to explore defect/dopant-induced magnetism in GNRs.Thrust 2Year 1: (a) Develop metal electrode contacts to GNRs with 10 nm resolution using e-beam lithography. (b) Develop electrical contacts to electrospray-deposited GNRs using electron-beam-induced-deposition (EBID). (c
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 23, 2016
- Source ID
- N000141612921
Entities
People
- Michael F. Crommie
Organizations
- Office of Naval Research
- United States Navy
- University of California Regents