Imperial College London


Faculty of Natural SciencesDepartment of Physics

Visiting Professor



+44 (0)20 7594 6669thomas.anthopoulos Website




Mrs Carolyn Dale +44 (0)20 7594 7579




1111Blackett LaboratorySouth Kensington Campus






BibTex format

author = {Wyatt-Moon, G and Georgiadou, DG and Zoladek-Lemanczyk, A and Castro, FA and Anthopoulos, TD},
doi = {2515-7639/aadd57},
journal = {Journal of Physics: Materials},
title = {Flexible nanogap polymer light-emitting diodes fabricated via adhesion lithography (a-Lith)},
url = {},
volume = {1},
year = {2018}

RIS format (EndNote, RefMan)

AB - We report the development of coplanar green colour organic light-emitting diodes (OLEDs) based on asymmetric nanogap electrodes fabricated on different substrates including glass and plastic. Using adhesion lithography (a-Lith) we pattern Al and Au layers acting as the cathode and anode electrodes, respectively, separated by an inter-electrode distance of <15 nm with an aspect ratio of up to 106. Spin-coating the organic light-emitting polymer poly(9,9-dioctylfluorene-alt-bithiophene) (F8T2) on top of the asymmetric Al–Au nanogap electrodes results in green light-emitting nanogap OLEDs with promising operating characteristics. We show that the scaling of the OLED's width from 4 to 200 mm can substantially improve the light output of the device without any adverse effects on the manufacturing yield. Furthermore, it is found that the light-emitting properties in the nanogap area differ from the bulk organic film, an effect attributed to confinement of the conjugated polymer chains in the nanogap channel. These results render a-Lith particularly attractive for low cost facile fabrication of nanoscale light-emitting sources and arrays on different substrates of arbitrary size.
AU - Wyatt-Moon,G
AU - Georgiadou,DG
AU - Zoladek-Lemanczyk,A
AU - Castro,FA
AU - Anthopoulos,TD
DO - 2515-7639/aadd57
PY - 2018///
SN - 2515-7639
TI - Flexible nanogap polymer light-emitting diodes fabricated via adhesion lithography (a-Lith)
T2 - Journal of Physics: Materials
UR -
UR -
VL - 1
ER -