Bottom-up organic integrated circuits

Abstract

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Concept of a Molecular Charge Storage Dielectric Layer for Organic Thin‐Film Memory Transistors

“…semiconductors showing large p-and n-type mobilities 1-4 , dielectrics and circuit methodologies providing low power consumption [5][6][7][8] and smart production methods suitable for flexible substrates [9][10][11][12] have been developed. Much attention has focussed on realizing electrically and environmentally stable OTFTs required to successfully implement complex systems such as radio frequency identification (RFID) tags 10,[13][14][15][16] .…”

“…Much attention has focussed on realizing electrically and environmentally stable OTFTs required to successfully implement complex systems such as radio frequency identification (RFID) tags 10,[13][14][15][16] . An avenue that has received far less attention, despite carrying tremendous promise, is the "controllable" manipulation of the transistor functionality beyond that of a switch or amplifier.…”

Trichlorosilanes as Anchoring Groups for Phenylene‐Thiophene Molecular Monolayer Field Effect Transistors

“…[ 12 ] The trichlorosilane derivative ( 7b ) was more reactive and working monolayer fi eld effect transistors were fabricated in less than 10 h over large areas (4 cm 2 ) for long channel lengths (up to 100 µm).…”

“…[ 14,16 ] The breakthrough was achieved when Smits et al reported a SAMFET molecule consisting of a monochlorosilane anchoring group separated from a quinquethiophene core by an alkyl spacer. [ 12 ] The molecule showed long range order when deposited onto a silicon dioxide surface and fi eld effect characteristics could be obtained over large areas for channel lengths up to 40 µm. SAMFETs have now been reported using phosphonic acid anchoring groups to covalently attach to aluminum oxide and alternative aromatic cores to create p-and n-type transistors over long channel lengths.…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Self assembled monolayer fi eld effect transistors (SAMFETs) have been demonstrated consisting of a single molecular layer of organic semiconductor, self assembled from solution. [8][9][10][11][12][13][14]16 ] The principal building blocks of these devices are molecules with a π-conjugated semiconducting core that is coupled to a surface anchoring group capable of covalently binding to a surface. These molecules create a self-limiting monolayer between source and drain contacts that functions as a two dimensional charge transport layer, comparable in thickness to the charge ambient, humid conditions relative to that of the analogous oligothiophenes.…”