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[International Journal] Plasmonic nanomesh as a large-area, low-resistive transparent electrode and its application in ITO-free organic light-emitting diodes
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Sung-Min Lee , Joon-Sik Chae , Dong-Young Kim , and Kyung Cheol Choi
Organic Electronics, November , 2014
vol 15, no 11, pp 3354-3361
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 (∼3.5 Ω/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.