Low-temperature synthesis of indium tin oxide nanowires as the transparent electrodes for organic light emitting devices
Document Type
Article
Publication Date
12-14-2011
Department
Department of Physics
Abstract
Low-temperature growth of indium tin oxide (ITO) nanowires (NWs) was obtained on catalyst-free amorphous glass substrates at 250 °C by Nd:YAG pulsed-laser deposition. These ITO NWs have branching morphology as grown in Ar ambient. As suggested by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM), our ITO NWs have the tendency to grow vertically outward from the substrate surface, with the (400) plane parallel to the longitudinal axis of the nanowires. These NWs are low in electrical resistivity (1.6 × 10−4 Ω cm) and high in visible transmittance (~90–96%), and were tested as the electrode for organic light emitting devices (OLEDs). An enhanced current density of ~30 mA cm−2 was detected at bias voltages of ~19–21 V with uniform and bright emission. We found that the Hall mobility of these NWs is 2.2–2.7 times higher than that of ITO film, which can be explained by the reduction of Coulomb scattering loss. These results suggested that ITO nanowires are promising for applications in optoelectronic devices including OLED, touch screen displays, and photovoltaic solar cells.
Publication Title
Nanotechnology
Recommended Citation
Kee, Y. Y.,
Tan, S. S.,
Yong, T. K.,
Nee, C. H.,
Moscatello, J. P.,
Yap, Y. K.,
&
et. al.
(2011).
Low-temperature synthesis of indium tin oxide nanowires as the transparent electrodes for organic light emitting devices.
Nanotechnology,
23.
http://doi.org/10.1088/0957-4484/23/2/025706
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/42
Publisher's Statement
©2012 IOP Publishing LtdPublisher's version of record: https://doi.org/10.1088/0957-4484/23/2/025706