Issue 12, 2022

Near-infrared-to-visible upconversion from 980 nm excitation band by binary solid of PbS quantum dot with directly attached emitter

Abstract

Long-wavelength NIR photon upconversion (UC) by triplet–triplet annihilation in cast solid is reported. NIR excitation at 975 nm of the binary solid of PbS quantum dot (QD) and an anthradithiophene derivative, which can attach to the QD directly, gave a UC quantum yield of 0.2% (vs. 50% full-scale) and threshold intensity of 2.5 W cm−2. Triplet energy transfer from QD was found to be accelerated by the direct attachment, based on the UC emission dynamics.

Graphical abstract: Near-infrared-to-visible upconversion from 980 nm excitation band by binary solid of PbS quantum dot with directly attached emitter

Supplementary files

Article information

Article type
Communication
Submitted
20 okt 2021
Accepted
02 jan 2022
First published
04 jan 2022

J. Mater. Chem. C, 2022,10, 4563-4567

Near-infrared-to-visible upconversion from 980 nm excitation band by binary solid of PbS quantum dot with directly attached emitter

N. Tripathi, M. Ando, T. Akai and K. Kamada, J. Mater. Chem. C, 2022, 10, 4563 DOI: 10.1039/D1TC05058C

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