Highly luminescent and narrow-band-emitting InP/ZnSe/ZnS quantum dot synthesis by halide modified shell reaction

Indium phosphide (InP) quantum dots (QDs) are attractive materials as cadmium- and lead-free emitters for wide-color gamut displays. However, the wider emission full-width at half-maximum (FWHM) of InP-QDs has been the obstacle to replacing cadmium selenide QDs. Here, we report that the presence of...

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Bibliographic Details
Published in:Applied physics express 2023-01, Vol.16 (1), p.15504
Main Authors: Moriyama, Takafumi, Kumamoto, Akihito, Kido, Makoto, Sasaki, Hirokazu, Novet, Thomas, Shibata, Naoya, Ikuhara, Yuichi
Format: Article
Language:English
Subjects:
core/shell
display
quantum dots
semiconductor nanocrystals
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Summary:Indium phosphide (InP) quantum dots (QDs) are attractive materials as cadmium- and lead-free emitters for wide-color gamut displays. However, the wider emission full-width at half-maximum (FWHM) of InP-QDs has been the obstacle to replacing cadmium selenide QDs. Here, we report that the presence of ZnCl 2 during shell formation drastically improves the emission properties of InP-QDs. Scanning transmission electron microscope observation revealed that uniform and spherical particles were formed in the presence of ZnCl 2 . By combining the flow reaction of InP core QDs, kilogram-scale synthesis was achieved while maintaining excellent emission properties.
ISSN:1882-0778
1882-0786
DOI:10.35848/1882-0786/aca9ba