Highly reactive, flexible yet green Se precursor for metal selenide nanocrystals : Se-octadecene suspension (Se-SUS)

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Abstract

A suspension of fine selenium powder (100 or 200 mesh) in octadecene (Se-SUS) has proven to be a high-performance, versatile, convenient, reproducible, yet green selenium precursor. The advantages of Se-SUS arise from its highly reactive chemical nature and flexibility. These two features made it possible to carry out the synthesis of high quality metal selenide nanocrystals with diverse compositions and structures, including binary, core/shell, transition metal doped, and complex composition nanocrystals. These successes further demonstrated that Se-SUS is a powerful Se precursor for solving a few long-standing challenges in the synthesis of high quality selenide nanocrystals. For instance, Se-SUS was successfully employed as a Se precursor for shell growth in high quality core/shell nanocrystals to replace expensive and highly toxic precursors, such as Se-phosphine and bis-trimethylsilyl selenide, with greatly lowered epitaxial temperatures (as low as 150 °C) to avoid alloying. As another example, Se-SUS enabled “co-nucleation doping” as a means of preparing high quality Mn doped ZnSe nanocrystals with pure, stable, and highly efficient dopant fluorescence.

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Autori: Chaodan Pu iD (Zhejiang University); Jianhai Zhou iD (Zhejiang University); Runchen Lai iD (Zhejiang University); Yuan Niu (Zhejiang University); Wennuan Nan (Zhejiang University); Xiaogang Peng iD (Zhejiang University)
Pubblicato in: Nano Research, vol. 6, n. 9, pp. 652-670
Data di pubblicazione:18/06/2013
Editore:Springer Science+Business Media
Tipo di documento:Articolo
Lingua:inglese
DOI: 10.1007/s12274-013-0341-7
ISSN:1998-0000, 1998-0124
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Citazioni ricevute:139
Soggetti:
Quantum Dots Synthesis And Properties (Physical Sciences > Materials Science > Materials Chemistry)
Crystal Structures and Properties (Physical Sciences > Materials Science > Electronic, Optical and Magnetic Materials)
Chalcogenide Semiconductor Thin Films (Physical Sciences > Engineering > Electrical and Electronic Engineering)
selenium precursor, green synthesis, core-shell nanocrystals, epitaxial growth, transition metal doping, nanocrystal synthesis
Identificativi: OpenAlex W2397905907

Dati dell'indice centrale: OpenAlex (licenza CC0).

Riassunto:A suspension of fine selenium powder (100 or 200 mesh) in octadecene (Se-SUS) has proven to be a high-performance, versatile, convenient, reproducible, yet green selenium precursor. The advantages of Se-SUS arise from its highly reactive chemical nature and flexibility. These two features made it possible to carry out the synthesis of high quality metal selenide nanocrystals with diverse compositions and structures, including binary, core/shell, transition metal doped, and complex composition nanocrystals. These successes further demonstrated that Se-SUS is a powerful Se precursor for solving a few long-standing challenges in the synthesis of high quality selenide nanocrystals. For instance, Se-SUS was successfully employed as a Se precursor for shell growth in high quality core/shell nanocrystals to replace expensive and highly toxic precursors, such as Se-phosphine and bis-trimethylsilyl selenide, with greatly lowered epitaxial temperatures (as low as 150 °C) to avoid alloying. As another example, Se-SUS enabled “co-nucleation doping” as a means of preparing high quality Mn doped ZnSe nanocrystals with pure, stable, and highly efficient dopant fluorescence.
ISSN:1998-0000
1998-0124
DOI:10.1007/s12274-013-0341-7