Journal
ORGANIC ELECTRONICS
Volume 15, Issue 11, Pages 3354-3361Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2014.09.015
Keywords
Transparent electrodes; Plasmonics; Optical nanostructures; Optoelectronics; OLEDs
Funding
- National Research Foundation of Korea (NRF) grant - Korea government(MSIP) [CAFDC 5-1(0), NRF-2007-0056090]
- LG Display Co., Ltd.
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Here we implement a systematic investigation of two-dimensional silver nanomeshes (AgNMs) for large-area, very low-resistive transparent electrodes and their successful application to ITO-free organic light-emitting diodes (OLEDs). Experimental results, as well as theoretical analyses with optical and electrical calculation, show that an optimized AgNM electrode fabricated via cost-effective colloidal lithography can have high transmittance and low sheet resistance simultaneously. By using an index-matching concept for further improvement of optical performance, highly transparent AgNM electrodes are achieved at very low sheet resistance (similar to 3.5 Omega/sq). Based on the study regarding transmittance variation of AgNM electrodes embedded in OLEDs, a pertinent index-matching layer is proposed for high performance AgNM-based OLEDs. (C) 2014 Elsevier B.V. All rights reserved.
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