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Photon Upconversion Dyes System with Red to Yellow Wavelength Conversion Function
Hirokazu YAMANE Mayo KAWAHARA Genta TAKATOKI Masataka TAGUCHI Yasuhiro YAMASAKI Toshihiko NAGAMURA
IEICE TRANSACTIONS on Electronics
Publication Date: 2019/02/01
Online ISSN: 1745-1353
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Organic Molecular Electronics and Biotechnology)
photon upconversion, triplet-triplet annihilation, sensitizer, emitter, phthalocyanine,
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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.