open access

https://hdl.handle.net/2115/82581

Circularly Polarized Absorption and Luminescence of Semiconductor Eu-OCN Nanocrystals in the Blue Region of the Electromagnetic Spectrum

英語

semiconductors

2020-09-02

Wiley-Blackwell

ChemPhysChem

21(17)

2019-2024

Semiconductor nanomaterials with efficient polarized-light control in the blue region of the visible spectrum are promising candidates for modern and future photo-information technology, display devices, and optical sensing applications. New-type semiconductor Eu(OCN)(2)nanocrystals with circularly polarized absorption (CD: circular dichroism) and emission (CPL: circularly polarized luminescence) under an applied magnetic field are demonstrated here for the first time. The effective CD signal at 1.6 T was observed at approximately 440 nm. The dissymmetry factor of CPL under 100 K, g(M-CPL,)was estimated to be 0.01. These characteristic circularly polarized absorption and emission phenomena of Eu(OCN)(2)nanocrystals should be caused by combination between the"Faraday AandC terms"of the magnetic moment in the excited state. Polarized-light control using Eu(OCN)(2)nanocrystals in the blue-light region of the electromagnetic spectrum is a large first step into a new world of photo-functional semiconductor nanomaterials.

学術雑誌論文

Accepted Manuscript

This is the peer reviewed version of the following article: Y. Hasegawa, K. Koide, M. Tsurui, Y. Kitagawa, T. Nakanishi, Y. Doi, Y. Hinatsu, K. Fushimi, ChemPhysChem 2020, 21, 2019. , which has been published in final form at http://doi.org/10.1002/cphc.202000468. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

1439-4235