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Fabrication of Transparent Electrodes with Silver Nanowires and PPT Gel for Organic Optoelectronic Devices

Published online by Cambridge University Press:  04 June 2014

Ming-Chih Tsai
Affiliation:
Research Center for Applied Sciences, Academia Sinica, Nankang, Taipei 115, Taiwan Institute of Biophotonics, National Yang-Ming University, Beitou, Taipei 12221, Taiwan
Yu-Hsuan Chen
Affiliation:
Research Center for Applied Sciences, Academia Sinica, Nankang, Taipei 115, Taiwan Insititue of Optoelectronic Sciences, National Taiwan Ocean University, Jhongjheng District, Keelung 20224, Taiwan
Yu-Hsuan Ho
Affiliation:
Research Center for Applied Sciences, Academia Sinica, Nankang, Taipei 115, Taiwan
Shang-Jung Yang
Affiliation:
Research Center for Applied Sciences, Academia Sinica, Nankang, Taipei 115, Taiwan Insititue of Optoelectronic Sciences, National Taiwan Ocean University, Jhongjheng District, Keelung 20224, Taiwan
Pei-Kuen Wei
Affiliation:
Research Center for Applied Sciences, Academia Sinica, Nankang, Taipei 115, Taiwan Institute of Biophotonics, National Yang-Ming University, Beitou, Taipei 12221, Taiwan Insititue of Optoelectronic Sciences, National Taiwan Ocean University, Jhongjheng District, Keelung 20224, Taiwan
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Abstract

We have developed a low cost and convenient approach to fabricate ITO-comparable transparent electrodes by using solution process of silver nanowires mixed with poly peroxotitanic acid (PPT) gel. The PPT gel is applied to connect the dispersed silver nanowires to preserve its high conductivity while remaining transparency and reducing surface roughness of the transparent electrode. The silver nanowires were synthesized via a modified polyol method, and the PPT gels were prepared by sol-gel method in appropriate concentrations. After applying the PPT gels, the sheet resistance of the transparent electrodes was improved from 192 Ω/□ to 44.7 Ω/□ with a transmittance of 81 %. And the roughness (RMS) was decreased from 106.3 nm to 48.1 nm. The PPT gel also improved the reliability of the proposed electrodes, which the conductivity was remained after general atmospheric storage of 6 months. We also demonstrate an Alq3 based OLED with the proposed transparent electrodes.

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Articles
Copyright
Copyright © Materials Research Society 2014 

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Fabrication of Transparent Electrodes with Silver Nanowires and PPT Gel for Organic Optoelectronic Devices
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