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Updated: Feb 3, 2026

Triplet Fusion Upconversion Nanocapsule Synthesis
Published on: September 7, 2022
Organic Upconversion Display with an over 100% Photon-to-photon Upconversion Efficiency and a Simple Pixelless Device
Qiaogang Song1,2,3, Tong Lin2,3, Zisheng Su1,2
1College of Physics and Information Engineering, Key Laboratory of Information Functional Material for Fujian Higher Education , Quanzhou Normal University , Quanzhou 362000 , People's Republic of China.
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.
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