Issue 5, 2023

Solvent-free temperature gradient melt formation of efficient visible-to-UV photon upconversion organic films with subsolar threshold and over 100 h photostability in air

Abstract

Completely solvent-free “green” formation of bicomponent organic polycrystalline films for efficient visible-to-ultraviolet photon upconversion (UV–UC) were achieved by temperature-gradient solidification from the melt. The UV–UC film formed under optimal conditions exhibited an ultralow excitation threshold (0.3 suns, AM1.5 spectrum with a 413 nm long-pass filter) and a record-long photostability (>100 h) in air.

Graphical abstract: Solvent-free temperature gradient melt formation of efficient visible-to-UV photon upconversion organic films with subsolar threshold and over 100 h photostability in air

Supplementary files

Article information

Article type
Communication
Submitted
27 Okt. 2022
Accepted
20 Dec. 2022
First published
20 Dec. 2022
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2023,11, 1678-1683

Solvent-free temperature gradient melt formation of efficient visible-to-UV photon upconversion organic films with subsolar threshold and over 100 h photostability in air

R. Enomoto and Y. Murakami, J. Mater. Chem. C, 2023, 11, 1678 DOI: 10.1039/D2TC04578H

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