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A facile non-injection phosphorus-free synthesis of semiconductor nanoparticles using new selenium precursors

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Abstract

We report on new sources of selenium for the synthesis of semiconductor nanoparticles of the AIIBVI type. Three types of Se-precursors were synthesized and studied: selenophene derivatives, dialkylselenides and dialkyldiselenides. The capabilities of the new precursors were examined in a phosphorus-free synthesis by the non-injection method. In different conditions, we managed to synthesize nanoparticles of different shapes depending on the used Se-precursors and growth stabilizers. Aminoselenophene derivatives showed the most promising results in the synthesis of CdSe QDs providing a high reaction yield (up to 82%) of NPs with good luminescence properties. We also found that liquid dialkyldiselenides could successfully replace a TOP-Se precursor in the synthesis of highly bright CdSe/CdS quantum rods with narrow photoluminescence. The proposed selenium precursors, being easily available and very stable, are promising alternatives to the highly toxic air-sensitive phosphine-based precursors and unstable Se–ODE solutions in the non-injection synthesis of different kinds of semiconductor nanoparticles, which is particularly important for industrial scale production.

Graphical abstract: A facile non-injection phosphorus-free synthesis of semiconductor nanoparticles using new selenium precursors

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Article information


Submitted
17 Sep 2019
Accepted
08 Dec 2019
First published
11 Dec 2019

CrystEngComm, 2020, Advance Article
Article type
Paper

A facile non-injection phosphorus-free synthesis of semiconductor nanoparticles using new selenium precursors

M. Prodanov, M. Diakov and V. Vashchenko, CrystEngComm, 2020, Advance Article , DOI: 10.1039/C9CE01467E

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