Extremely Efficient Transparent Flexible Organic Light-Emitting Diodes with Nanostructured Composite Electrodes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

9 Scopus Citations
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Author(s)

  • Heng-Yang Xiang
  • Yan-Qing Li
  • Shuai-Shuai Meng
  • Lin-Sen Chen
  • Jian-Xin Tang

Detail(s)

Original languageEnglish
Article number1800831
Journal / PublicationAdvanced Optical Materials
Volume6
Issue number21
Online published9 Aug 2018
Publication statusPublished - 5 Nov 2018

Abstract

Transparent flexible organic light-emitting diodes (TF-OLEDs) are emerging as a leading technique in bendable display and curved lighting applications due to their merits including superior mechanical flexibility, low power consumption, and broad color gamut. However, it is challenging to turn TF-OLEDs into a power-efficient large-area light source. Here, an improved TF-OLED structure on a plastic substrate that achieves a device transparency over 70% and extremely efficient warm-white emission from both sides is reported. The key feature of this device structure is the combination of transparent metal–dielectric composite electrodes, which are patterned with moth-eye nanostructures for broadband and angle-independent light outcoupling. By collectively reducing ohmic losses and releasing the trapped photons, the TF-OLEDs achieve a record external quantum efficiency of 72.4% and power efficiency of 168.5 lm W−1 with a color-rendering index over 84. These results present the great potential of TF-OLEDs for use in a wide variety of flexible applications.

Research Area(s)

  • flexible OLEDs, light outcoupling, organic light-emitting diodes, transparent conductive electrodes, transparent OLEDs

Citation Format(s)

Extremely Efficient Transparent Flexible Organic Light-Emitting Diodes with Nanostructured Composite Electrodes. / Xiang, Heng-Yang; Li, Yan-Qing; Meng, Shuai-Shuai; Lee, Chun-Sing; Chen, Lin-Sen; Tang, Jian-Xin.

In: Advanced Optical Materials, Vol. 6, No. 21, 1800831, 05.11.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review