An Indium-Free Anode for Large-Area Flexible OLEDs: Defect-Free Transparent Conductive Zinc Tin Oxide

An Indium-Free Anode for Large-Area Flexible OLEDs: Defect-Free Transparent Conductive Zinc Tin Oxide

Flexible large‐area organic light‐emitting diodes (OLEDs) require highly conductive and transparent anodes for efficient and uniform light emission. Tin‐doped indium oxide (ITO) is the standard anode in industry. However, due to the scarcity of indium, alternative anodes that eliminate its use are h...

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Veröffentlicht in:Advanced functional materials 2016-01, Vol.26 (3), p.384-392
Hauptverfasser: Morales-Masis, Monica, Dauzou, Fabien, Jeangros, Quentin, Dabirian, Ali, Lifka, Herbert, Gierth, Rainald, Ruske, Manfred, Moet, Date, Hessler-Wyser, Aïcha, Ballif, Christophe
Format: Artikel
Sprache:eng
Schlagworte:
Anodes
Combinatorial analysis
Devices
Electron mobility
flexible OLEDs
Indium oxides
indium-free transparent electrodes
large-area white OLEDs
Organic light emitting diodes
TEM
Tin oxides
transparent conductive oxides
Zinc
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Zusammenfassung:Flexible large‐area organic light‐emitting diodes (OLEDs) require highly conductive and transparent anodes for efficient and uniform light emission. Tin‐doped indium oxide (ITO) is the standard anode in industry. However, due to the scarcity of indium, alternative anodes that eliminate its use are highly desired. Here an indium‐free anode is developed by a combinatorial study of zinc oxide (ZnO) and tin oxide (SnO2), both composed of earth‐abundant elements. The optimized Zn–Sn–O (ZTO) films have electron mobilities of up to 21 cm2 V−1 s−1, a conductivity of 245 S cm−1, and
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201503753