Enhancing Optical Out-Coupling of Organic Light-Emitting Devices with Nanostructured Composite Electrodes Consisting of Indium Tin Oxide Nanomesh and Conducting Polymer

Chien-Yu Chen; Wei-Kai Lee; Yi-Jiun Chen; Chun-Yang Lu; Hoang Yan Lin; Chung-Chih Wu

doi:10.1002/adma.201502516

Enhancing Optical Out-Coupling of Organic Light-Emitting Devices with Nanostructured Composite Electrodes Consisting of Indium Tin Oxide Nanomesh and Conducting Polymer

Adv Mater. 2015 Sep 2;27(33):4883-8. doi: 10.1002/adma.201502516. Epub 2015 Jul 14.

Authors

Chien-Yu Chen¹, Wei-Kai Lee¹, Yi-Jiun Chen², Chun-Yang Lu¹, Hoang Yan Lin², Chung-Chih Wu¹

Affiliations

¹ Department of Electrical Engineering, Graduate Institute of Electronics Engineering, Graduate Institute of Photonics and Optoelectronics and Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei, 10617, Taiwan.
² Department of Electrical Engineering, Graduate Institute of Photonics and Optoelectronics and Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei, 10617, Taiwan.

PMID: 26173732
DOI: 10.1002/adma.201502516

Abstract

A nanostructured composite electrode consisting of a high-index indium-tin-oxide nanomesh and low-index high-conductivity conducting polymer effectively enhances coupling of internal radiation of organic light-emitting devices into their substrates. When combining this internal extraction structure and the external extraction scheme, a very high external quantum efficiency of nearly 62% is achieved with a green phosphorescent device.

Keywords: conducting polymers; efficiency; nanostructures; organic light-emitting diodes.