Triplet sensitization via charge recombination at organic heterojunction for efficient near-infrared to visible solid-state photon upconversion

Yuji Sakamoto; Seiichiro Izawa; Hideo Ohkita; Masahiro Hiramoto; Yasunari Tamai

doi:10.1038/s43246-022-00300-z

Communications Materials (Oct 2022)

Triplet sensitization via charge recombination at organic heterojunction for efficient near-infrared to visible solid-state photon upconversion

Yuji Sakamoto,
Seiichiro Izawa,
Hideo Ohkita,
Masahiro Hiramoto,
Yasunari Tamai

Affiliations

Yuji Sakamoto: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
Seiichiro Izawa: Institute for Molecular Science
Hideo Ohkita: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
Masahiro Hiramoto: Institute for Molecular Science
Yasunari Tamai: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University

DOI: https://doi.org/10.1038/s43246-022-00300-z
Journal volume & issue: Vol. 3, no. 1
pp. 1 – 9

Abstract

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A near-infrared to visible photon upconversion device was previously shown to increase external quantum efficiency by up to 2.3%. Here, the upconversion mechanism is studied by time-resolved spectroscopy, revealing that 67% of incident photons are utilized.

Published in Communications Materials

ISSN: 2662-4443 (Online)
Publisher: Nature Portfolio
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.nature.com/commsmat/

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