Processing and Low Voltage Switching of Organic Ferroelectric Phase-Separated Bistable Diodes

Autor: Mengyuan Li, Jasper J. Michels, Rene Beerends, Mark Jan Spijkman, Dago M. de Leeuw, Natalie Stingelin, Paul W. M. Blom, Fabio Biscarini, Kamal Asadi
Přispěvatelé: Zernike Institute for Advanced Materials
Jazyk: angličtina
Rok vydání: 2012
Předmět:
non-volatile memory
Bistability
Ferroelectricity
Spinodal decomposition
Random copolymer
Polymers
ferroelectric blends
bistable diodes
spinodal decomposition
self-affine surfaces
ferroelectricity
HOL - Holst
02 engineering and technology
01 natural sciences
BLENDS
Self-affine
Self-affine surfaces
Phase (matter)
Electrochemistry
Phase diagrams
Microstructure
Phase diagram
chemistry.chemical_classification
TS - Technical Sciences
Industrial Innovation
Small roughness
Polymer
021001 nanoscience & nanotechnology
Condensed Matter Physics
Low voltages
Electronic
Optical and Magnetic Materials
Blend components
Chemical physics
Poly(vinylidene fluoride-trifluoroethylene)
MEMORIES
De-mixing
0210 nano-technology
Bistables
Systematic variation
Materials science
Phase separation
Inverted structure
010402 general chemistry
FILMS
Time-resolved
Biomaterials
Blend composition
Blend films
Polymer chemistry
Microstructure evolutions
Processing parameters
Active components
Non-volatile memories
Thermoanalysis
Mechatronics
Mechanics & Materials
Binary phase diagrams
Blend ratios
0104 chemical sciences
Non-volatile memory
chemistry
TRANSISTORS
Deposition temperatures
Electronics
Plastic coatings
Binary blends
ACTIVE-MATRIX DISPLAYS
Zdroj: Advanced Functional Materials, 22(13), 2750-2757. WILEY-V C H VERLAG GMBH
Advanced Functional Materials, 13, 22, 2750-2757
Advanced functional materials
22 (2012): 2750–2757. doi:10.1002/adfm.201102898
info:cnr-pdr/source/autori:M.Li, N. Stingelin, J.J. Michels, M.-J. Spijkman, K.L. Asadi, R. Beerends, F. Biscarini, P.W. M. Blom, D.M. de Leeuw/titolo:Processing and low voltage switching of organic ferroelectric phase-separated bisteble diodes/doi:10.1002%2Fadfm.201102898/rivista:Advanced functional materials (Print)/anno:2012/pagina_da:2750/pagina_a:2757/intervallo_pagine:2750–2757/volume:22
ISSN: 1616-301X
DOI: 10.1002/adfm.201102898
Popis: The processing of solution-based binary blends of the ferroelectric random copolymer poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) and the semiconducting polymer poly(9,9-dioctylfluorenyl-2,7-diyl) (PFO) applied by spin-coating and wire-bar coating is investigated. By systematic variation of blend composition, solvent, and deposition temperature it is shown that much smoother blend films can be obtained than reported thus far. At a low PFO:P(VDF-TrFE) ratio the blend film consists of disk-shaped PFO domains embedded in a P(VDF-TrFE) matrix, while an inverted structure is obtained in case the P(VDF-TrFE) is the minority component. The microstructure of the phase separated blend films is self-affine. From this observation and from the domain size distribution it is concluded that the phase separation occurs via spinodal decomposition, irrespectively of blend ratio. This is explained by the strong incompatibility of the two polymers expressed by the binary phase diagram, as constructed from thermal analysis data. Time resolved numerical simulation of the microstructure evolution during de-mixing qualitatively shows how an elevated deposition temperature has a smoothening effect as a result of the reduction of the repulsion between the blend components. The small roughness allowed the realization of bistable rectifying diodes that switch at low voltages with a yield of 100%. This indicates that memory characteristics can be tailored from the outset while processing parameters can be adjusted according to the phase behavior of the active components. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Databáze: OpenAIRE
Externí odkaz: