TY - JOUR
T1 - Designing solution-processable air-stable liquid crystalline crosslinkable semiconductors
AU - McCulloch, I.
AU - Bailey, C.
AU - Genevicius, K.
AU - Heeney, M.
AU - Shkunov, M.
AU - Sparrowe, D.
AU - Tierney, S.
AU - Zhang, W.M.
AU - Baldwin, R.
AU - Kreouzis, T.
AU - Andreasen, Jens Wenzel
AU - Breiby, Dag Werner
AU - Nielsen, Martin Meedom
PY - 2006
Y1 - 2006
N2 - Organic electronics technology, in which at least the semiconducting component of the integrated circuit is an organic material, offers the potential for fabrication of electronic products by low-cost printing technologies, such as ink jet, gravure offset lithography and flexography. The products will typically be of lower performance than those using the present state of the art single crystal or polysilicon transistors, but comparable to amorphous silicon. A range of prototypes are under development, including rollable electrophoretic displays, active matrix liquid crystal (LC) displays, flexible organic light emitting diode displays, low frequency radio frequency identification tag and other low performance electronics. Organic semiconductors that offer both electrical performance and stability with respect to storage and operation under ambient conditions are required. This work describes the development of reactive mesogen semiconductors, which form large crosslinked LC domains on polymerization within mesophases. These crosslinked domains offer mechanical stability and are inert to solvent exposure in further processing steps. Reactive mesogens containing conjugated aromatic cores, designed to facilitate charge transport and provide good oxidative stability, were prepared and their liquid crystalline properties evaluated. The organization and alignment of the mesogens, both before and after crosslinking, were probed by grazing incidence wide-angle X-ray scattering of thin films. Both time-of-flight and field effect transistor devices were prepared and their electrical characterization reported.
AB - Organic electronics technology, in which at least the semiconducting component of the integrated circuit is an organic material, offers the potential for fabrication of electronic products by low-cost printing technologies, such as ink jet, gravure offset lithography and flexography. The products will typically be of lower performance than those using the present state of the art single crystal or polysilicon transistors, but comparable to amorphous silicon. A range of prototypes are under development, including rollable electrophoretic displays, active matrix liquid crystal (LC) displays, flexible organic light emitting diode displays, low frequency radio frequency identification tag and other low performance electronics. Organic semiconductors that offer both electrical performance and stability with respect to storage and operation under ambient conditions are required. This work describes the development of reactive mesogen semiconductors, which form large crosslinked LC domains on polymerization within mesophases. These crosslinked domains offer mechanical stability and are inert to solvent exposure in further processing steps. Reactive mesogens containing conjugated aromatic cores, designed to facilitate charge transport and provide good oxidative stability, were prepared and their liquid crystalline properties evaluated. The organization and alignment of the mesogens, both before and after crosslinking, were probed by grazing incidence wide-angle X-ray scattering of thin films. Both time-of-flight and field effect transistor devices were prepared and their electrical characterization reported.
KW - Nanobioteknologi og medikomaterialer
KW - Liquid crystal
KW - Organic semiconductor
KW - Field effect transistor
U2 - 10.1098/rsta.2006.1854
DO - 10.1098/rsta.2006.1854
M3 - Journal article
SN - 1364-503X
VL - 364
SP - 2779
EP - 2787
JO - Philosophical Transactions of the Royal Society A-mathematical Physical and Engineering Sciences
JF - Philosophical Transactions of the Royal Society A-mathematical Physical and Engineering Sciences
IS - 1847
ER -