TY - JOUR
T1 - Organic Upconversion Display with an over 100% Photon-to-photon Upconversion Efficiency and a Simple Pixelless Device Structure
AU - Song, Qiaogang
AU - Lin, Tong
AU - Su, Zisheng
AU - Chu, Bei
AU - Yang, Huishan
AU - Li, Wenlian
AU - Lee, Chun-Sing
PY - 2018/12/6
Y1 - 2018/12/6
N2 - 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.
AB - 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.
KW - ACTIVATED DELAYED-FLUORESCENCE
KW - EXTERNAL QUANTUM EFFICIENCY
KW - LIGHT-EMITTING-DIODES
KW - VISIBLE-LIGHT
KW - CONVERTER
KW - PHOTODETECTORS
KW - DESIGN
UR - http://www.scopus.com/inward/record.url?scp=85057560256&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85057560256&origin=recordpage
U2 - 10.1021/acs.jpclett.8b02738
DO - 10.1021/acs.jpclett.8b02738
M3 - RGC 21 - Publication in refereed journal
SN - 1948-7185
VL - 9
SP - 6818
EP - 6824
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 23
ER -