Conductive AFM approaches towards functional nanoelectronics
Transcript of Conductive AFM approaches towards functional nanoelectronics
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Leibniz Institute
For Solid State and
Materials Research
Dresden
Conductive AFM approaches towards
functional nanoelectronics
March 16, 2016
Web Seminar Keysight Technologies: New AFM-enabled electrical measurement techniques
Conductive AFM techniques A tool for local electrical characterization
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 2
Advanced conductive AFM methods A tool for nanoscale transport research
German Research Foundation
Towards Molecular Spintronics Research Unit
Chemistry:
(synthesis)
Theory:
(modelling)
Magnetism:
(characterization, basic research)
Surface Science:
(characterization, basic research)
Devices:
(technological applications)
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 3
Outlook Towards Functional Nanoelectronics
Application to organic systems:
- Local transport studies of metalloporphyrin, phthalocyanine and
other organic thin films & nanostructures
- Identification of transport mechanism and mobility of charge
carriers
- Local tuning and manipulation of transport properties in organic
multilayers
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 4
Investigation of local transport properties of a wide range of
materials for implementations in fabrication of novel devices
(memristors, nanocapacitors, molecular electronics, etc)
Local IV Spectroscopy Spatial Current Mapping
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Conductive AFM a tool for local electrical investigations
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Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Conductive AFM a tool for local electrical investigations
Dynamic spatial mapping approach
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Transport studies in organic systems Metalloporphyrins
Morphology and local transport characteristics of
metalloporphyrin thin films
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 7
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Transport studies in organic systems Metalloporphyrins
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AFM local electrical analysis on Cu-TMPP: semiconducting matrix
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Transport studies in organic systems Metalloporphyrins
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AFM local electrical analysis on Cu-TMPP: semiconducting matrix
Cs-AFM on organic thin films Terbium(III) bis(phthalocyanine)
Optical and electrical transport of thin films of
Terbium(III) bis(phthalocyanine) (TbPc2)
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 10
Cs-AFM on organic thin films Terbium(III) bis(phthalocyanine)
Optical and electrical transport of thin films of
Terbium(III) bis(phthalocyanine) (TbPc2)
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 11
Cs-AFM on organic films Exploring transport mechanism on TbPc2
High reproducibility in cs-AFM modes
Determination of transport mechanism
for TbPc2 thin films
Robaschik, Siles et al,. Beilstein J. Nanotechnolol., 5, 2070-2078 (2014)
see also: J. Mater. Chem. C, 3, 8039-8049 (2015)
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 12
Cs-AFM on organic films Nanoscale mapping of carrier mobility
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 13
Transport dynamics MnPc and F16(metal)Pc heterostructures
Tunable charge transfer properties in metal-
phthalocyanine heterojunctions
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016 14
Transport dynamics MnPc and F16(metal)Pc heterostructures
locally tune the
transport properties
via organic doping?
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Tunable charge transfer properties in metal-
phthalocyanine heterojunctions
Siles et al., just accepted, Nanoscale (RSC), (2016)
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Transport dynamics MnPc and F16(metal)Pc heterostructures
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Spatial transport: enhancement & homogeneity
Siles et al., just accepted, Nanoscale (RSC), (2016)
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Transport mechanism & spatial mobility mapping
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Transport dynamics MnPc and F16(metal)Pc heterostructures
Siles et al., just accepted, Nanoscale (RSC), (2016)
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Towards Functional Nanoelectronics via advanced conductive AFM methods
Basic and applied research
Study of electrical
properties in
organics systems
Towards fabrication of
organic-based devices
Understanding of
intrinsic electric
properties
Tuning of transport
characteristics Local control of
transport properties
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Adv. Mater., DOI: 10.1002/adma.201506293 (2016)
Analytical Chemistry, 84, 8399, (2012)
Phys. Status Solidi A, 211, 2563, (2014)
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ACS Appl. Mater. Interfaces, 5, 12764, (2013)
Morphology and local transport characteristics of metalloporphyrin thin films
• C. C. Bof Bufon, D. Grim, A. R. Jelil, C. Mende, F. Lungwitz, G. Salvan, D. R. T. Zahn, H. Lang, O.
G. Schmidt
Optical and electrical transport of thin films of Terbium(III) bis(phthalocyanine) (TbPc2)
• P. Robaschik, D. Bülz, P. Richter, M. Monecke, M. Fronk, S. Klyatskaya, D. Grim, O. G. Schmidt,
M. Ruben, D. R. T. Zahn, G. Salvan
Tunable charge transfer properties in metal-phthalocyanine heterojunctions
• T. Hahn, G. Salvan, M. Knupfer, F. Zhu, D. R. T. Zahn, O. G. Schmidt
Nanostructured organic systems via surface potential investigations
• M. Devarajulu, V. Bandari, F. Zhu, O. G. Schmidt, F. Rükerln, M. Knupfer
Financial support:
Dr. Pablo F. Siles, Material Systems for Nanoelectronics - TU Chemnitz, March 16, 2016
Acknowledgements
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