Please use this identifier to cite or link to this item:
|Title:||High-performance polymer semiconducting heterostructure devices by nitrene-mediated photocrosslinking of alkyl side chains|
|Authors:||Png, R.-Q. |
|Citation:||Png, R.-Q., Chia, P.-J., Tang, J.-C., Liu, B., Sivaramakrishnan, S., Zhou, M., Khong, S.-H., Chan, H.S.O., Burroughes, J.H., Chua, L.-L., Friend, R.H., Ho, P.K.H. (2010-02). High-performance polymer semiconducting heterostructure devices by nitrene-mediated photocrosslinking of alkyl side chains. Nature Materials 9 (2) : 152-158. ScholarBank@NUS Repository. https://doi.org/10.1038/nmat2594|
|Abstract:||Heterostructures are central to the efficient manipulation of charge carriers, excitons and photons for high-performance semiconductor devices. Although these can be formed by stepwise evaporation of molecular semiconductors, they are a considerable challenge for polymers owing to re-dissolution of the underlying layers. Here we demonstrate a simple and versatile photocrosslinking methodology based on sterically hindered bis(fluorophenyl azide)s. The photocrosslinking efficiency is high and dominated by alkyl side-chain insertion reactions, which do not degrade semiconductor properties. We demonstrate two new back-infiltrated and contiguous interpenetrating donor-acceptor heterostructures for photovoltaic applications that inherently overcome internal recombination losses by ensuring path continuity to give high carrier-collection efficiency. This provides the appropriate morphology for high-efficiency polymer-based photovoltaics. We also demonstrate photopatternable polymer-based field-effect transistors and light-emitting diodes, and highly efficient separate-confinement-heterostructure light-emitting diodes. These results open the way to the general development of high-performance polymer semiconductor heterostructures that have not previously been thought possible. © 2010 Macmillan Publishers Limited. All rights reserved.|
|Source Title:||Nature Materials|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 17, 2018
WEB OF SCIENCETM
checked on Oct 17, 2018
checked on Oct 13, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.