Low-temperature synthesis of indium tin oxide nanowires as the transparent electrodes for organic light emitting devices |
| |
Authors: | Kee Yeh Yee Tan Sek Sean Yong Thian Khok Nee Chen Hon Yap Seong Shan Tou Teck Yong Sáfrán György Horváth Zsolt Endre Moscatello Jason P Yap Yoke Khin |
| |
Affiliation: | Faculty of Engineering, Multimedia University, 63100 Cyberjaya, Selangor, Malaysia. |
| |
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?? 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|