Optimization of silver nanowire networks for polymer light emitting diode electrodes

Date

2013-03-29

Author

Coskun, Sahin
Ates, Elif Selen
Ünalan, Hüsnü Emrah

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

238
views

0
downloads

Silver nanowire (Ag NW) networks are promising candidates for replacement of indium tin oxide (ITO). However, transparent conductors based on Ag NW networks often suffer from 'haziness' resulting from surface roughness. Thus, in addition to achieving suitable transparency and conductivity, surface roughness must be minimized if realistic implementation of Ag NW networks as transparent conductors is to be realized. In this work, we have reduced the surface roughness of Ag NW networks to below 5 nm as compared to 54 nm for as-deposited Ag NWs through optimization of the low temperature annealing treatment and planarization by poly(3,4 ethylenedioxythiophene)-poly(styrenesulfanate). Using this method, we have been able to produce Ag NW networks with transmittances and sheet resistances of 87% and 11 Omega/sq, respectively. These are some of the best values reported for non-oxide-based transparent conductors. Incorporation of these smooth Ag networks into polymer light emitting diodes fabricated in our laboratory yields device characteristics that are comparable to or better than those with commercially available ITO.

Subject Keywords

Mechanical Engineering, Electrical and Electronic Engineering, General Materials Science, Mechanics of Materials, Bioengineering, General Chemistry

URI

https://hdl.handle.net/11511/46492

Journal

NANOTECHNOLOGY

DOI

https://doi.org/10.1088/0957-4484/24/12/125202

Collections

Department of Metallurgical and Materials Engineering, Article

Suggestions

OpenMETU
Core

High-performance, bare silver nanowire network transparent heaters Ergun, Orcun; Coskun, Sahin; Yusufoglu, Yusuf; Ünalan, Hüsnü Emrah (IOP Publishing, 2016-11-04) Silver nanowire (Ag NW) networks are one of the most promising candidates for the replacement of indium tin oxide (ITO) thin films in many different applications. Recently, Ag-NW-based transparent heaters (THs) showed excellent heating performance. In order to overcome the instability issues of Ag NW networks, researchers have offered different hybrid structures. However, these approaches not only require extra processing, but also decrease the optical performance of Ag NW networks. So, it is important to i...
Core/shell copper nanowire networks for transparent thin film heaters Tigan, Dogancan; Genlik, Sevim Polat; İmer, Muhsine Bilge; Ünalan, Hüsnü Emrah (IOP Publishing, 2019-08-09) Copper nanowires (Cu NWs) appear as the strongest alternative to silver nanowires (Ag NWs) in transparent conductors. Cu NWs; however, are more prone to oxidation compared to Ag NWs even at room temperature. This problem becomes more severe when Cu NWs are used as transparent thin film heaters (TTFHs). In this work, we have utilized ALD deposited zinc oxide (ZnO) shell layers, and provide a comparison with typically used aluminum oxide (Al2O3) shell layers to improve the TTFH performance. While Cu NW networ...
Rapid synthesis of aligned zinc oxide nanowires Ünalan, Hüsnü Emrah; Rupesinghe, Nalin; Dalal, Sharvari; Milne, William I.; Amaratunga, Gehan A. J. (IOP Publishing, 2008-06-25) A solution growth approach for zinc oxide (ZnO) nanowires is highly appealing because of the low growth temperature and possibility for large area synthesis. Reported reaction times for ZnO nanowire synthesis, however, are long, spanning from several hours to days. In this work, we report on the rapid synthesis of ZnO nanowires on various substrates (such as poly(ethylene terephthalate) (PET), silicon and glass) using a commercially available microwave oven. The average growth rate of our nanowires is deter...
Indigo - A Natural Pigment for High Performance Ambipolar Organic Field Effect Transistors and Circuits Irimia-Vladu, Mihai; Glowacki, Eric D.; Troshin, Pavel A.; Schwabegger, Guenther; Leonat, Lucia; Susarova, Diana K.; Krystal, Olga; Ullah, Mujeeb; Kanbur, Yasin; Bodea, Marius A.; Razumov, Vladimir F.; Sitter, Helmut; Bauer, Siegfried; Sariciftci, Niyazi Serdar (Wiley, 2012-01-17) Millennium-old natural dye indigo - a "new" ambipolar organic semiconductor. Indigo shows balanced electron and hole mobilities of 1 x 10(-2) cm(2) V-1 s-1 and good stability against degradation in air. Inverters with gains of 105 in the first and 110 in the third quadrant are demonstrated. Fabricated entirely from natural and biodegradable compounds, these devices show the large potential of such materials for green organic electronics.
Silicon nanowire-silver indium selenide heterojunction photodiodes KULAKCI, Mustafa; ÇOLAKOĞLU, Tahir; OZDEMİR, Baris; Parlak, Mehmet; Ünalan, Hüsnü Emrah; Turan, Raşit (IOP Publishing, 2013-09-20) Structural and optoelectronic properties of silicon (Si) nanowire-silver indium selenide (AgInSe2) thin film heterojunctions were investigated. The metal-assisted etching method was employed to fabricate vertically aligned Si nanowire arrays. Stoichiometric AgInSe2 films were then deposited onto the nanowires using co-sputtering and sequential selenization techniques. It was demonstrated that the three-dimensional interface between the Si nanowire arrays and the AgInSe2 thin film significantly improved the ...

Citation Formats

S. Coskun, E. S. Ates, and H. E. Ünalan, “Optimization of silver nanowire networks for polymer light emitting diode electrodes,” NANOTECHNOLOGY, pp. 0–0, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46492.