Green-to-UV photon upconversion enabled by new perovskite nanocrystal-transmitter-emitter combination

Mio Koharagi; Naoyuki Harada; Keisuke Okumura; Junji Miyano; Shota Hisamitsu; Nobuo Kimizuka; Nobuhiro Yanai

doi:10.1039/D1NR06588B

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Green-to-UV photon upconversion enabled by new perovskite nanocrystal-transmitter-emitter combination†

Mio Koharagi,^a Naoyuki Harada,^a Keisuke Okumura,^a Junji Miyano,^a Shota Hisamitsu,^a Nobuo Kimizuka

*^a and Nobuhiro Yanai

*^ab

Author affiliations

* Corresponding authors

^a Department of Applied Chemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
E-mail: yanai@mail.cstm.kyushu-u.ac.jp, n-kimi@mail. cstm.kyushu-u.ac.jp

^b PRESTO, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan

Abstract

The first example of triplet–triplet annihilation-based photon upconversion (TTA-UC) from green light to ultraviolet (UV) light sensitized by lead halide perovskite nanocrystals is demonstrated. The combination of a new transmitter that extracts triplet energy from perovskite and a UV emitter with a low triplet energy level lengthens the excitation wavelength of perovskite-sensitized upconverted UV emission.

This article is part of the themed collections: Editor’s Choice Collection: Photon Upconversion and Nanoscale 2022 Emerging Investigators

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Article information

DOI: https://doi.org/10.1039/D1NR06588B
Article type: Communication
Submitted: 07 Oct 2021
Accepted: 21 Nov 2021
First published: 23 Nov 2021

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Nanoscale, 2021,13, 19890-19893

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Green-to-UV photon upconversion enabled by new perovskite nanocrystal-transmitter-emitter combination

M. Koharagi, N. Harada, K. Okumura, J. Miyano, S. Hisamitsu, N. Kimizuka and N. Yanai, Nanoscale, 2021, 13, 19890 DOI: 10.1039/D1NR06588B

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Green-to-UV photon upconversion enabled by new perovskite nanocrystal-transmitter-emitter combination†

Abstract

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Green-to-UV photon upconversion enabled by new perovskite nanocrystal-transmitter-emitter combination

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