Photon Upconversion Dyes System with Red to Yellow Wavelength Conversion Function

Hirokazu YAMANE; Mayo KAWAHARA; Genta TAKATOKI; Masataka TAGUCHI; Yasuhiro YAMASAKI; Toshihiko NAGAMURA

doi:10.1587/transele.2018OMP0005

Special Section on Recent Progress in Organic Molecular Electronics and Biotechnology

Photon Upconversion Dyes System with Red to Yellow Wavelength Conversion Function

Hirokazu YAMANE, Mayo KAWAHARA, Genta TAKATOKI, Masataka TAGUCHI, Yasuhiro YAMASAKI, Toshihiko NAGAMURA

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Keywords: photon upconversion, triplet-triplet annihilation, sensitizer, emitter, phthalocyanine

JOURNAL RESTRICTED ACCESS

2019 Volume E102.C Issue 2 Pages 107-112

DOI https://doi.org/10.1587/transele.2018OMP0005

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Abstract

Photon upconversion (UC) is a technique to convert long wavelength light into short wavelength light. UC fluorescence by triplet-triplet annihilation (TTA) follows a mechanism involving two kinds of molecules as sensitizer and emitter. In this study, we constructed the photon UC dyes system that was applicable to weak excitation light and convert the red light into yellow light in high efficiency. The present result will be useful for the purpose of application to optical elements and light medical care.

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