Organic Upconversion Display with an over 100% Photon-to-photon Upconversion Efficiency and a Simple Pixelless Device Structure

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

1 Scopus Citations
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Author(s)

  • Qiaogang Song
  • Tong Lin
  • Zisheng Su
  • Bei Chu
  • Huishan Yang
  • Wenlian Li

Detail(s)

Original languageEnglish
Pages (from-to)6818-6824
Journal / PublicationJournal of Physical Chemistry Letters
Volume9
Issue number23
Early online date6 Nov 2018
Publication statusPublished - 6 Dec 2018

Abstract

Compared to traditional near-infrared (NIR) imaging devices, NIR-to-visible upconversion displays, which integrated a NIR photodetector with a visible light-emitting diode, have merits of simple device structure, low cost, high resolution, and a simple pixelless structure. However, photon-to-photon upconversion efficiencies of these devices are typically much lower than unity. Here we report an all-organic NIR-to-visible upconversion display with a photon-to-photon upconversion efficiency higher than 100% by integrating a photomultiplying organic NIR photodetector with a high-efficiency thermally activated delayed fluorescent organic light-emitting diode. To the best of our knowledge, this is the first report showing a photon-to-photon upconversion efficiency over 100% without using a built-in transistor for current amplification.

Research Area(s)

  • ACTIVATED DELAYED-FLUORESCENCE, EXTERNAL QUANTUM EFFICIENCY, LIGHT-EMITTING-DIODES, VISIBLE-LIGHT, CONVERTER, PHOTODETECTORS, DESIGN

Citation Format(s)

Organic Upconversion Display with an over 100% Photon-to-photon Upconversion Efficiency and a Simple Pixelless Device Structure. / Song, Qiaogang; Lin, Tong; Su, Zisheng; Chu, Bei; Yang, Huishan; Li, Wenlian; Lee, Chun-Sing.

In: Journal of Physical Chemistry Letters, Vol. 9, No. 23, 06.12.2018, p. 6818-6824.

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