Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 41, Pages 13485-13488Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b07533
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Funding
- Instituut voor de Aanmoediging van Innovatie door Wetenschap en Technologie in Vlaanderen
- European Comission via the Marie-Sklodowska Curie action Phonsi [H2020-MSCA-ITN-642656]
- Belgian Science Policy office [IAP 7.35]
- Ghent University [GOA 01G01513]
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Despite their various potential applications, InAs colloidal quantum dots have attracted considerably less attention than more classical II-VI materials because of their complex syntheses that require hazardous precursors. Recently, aminophosphine has been introduced as a cheap, easy-to-use and efficient phosphorus precursor to synthesize InP quantum dots. Here, we use aminopnictogen precursors to implement a similar approach for synthesizing InAs quantum dots. We develop a two-step method based on the combination of aminoarsine as the arsenic precursor and aminophosphine as the reducing agent. This results in state-of-the-art InAs quantum dots with respect to the size dispersion and band gap range. Moreover, we present shell coating procedures that lead to InAs/ZnS(e) core/shell quantum dots that emit in the infrared region. This innovative synthesis approach can greatly facilitate the research on InAs quantum dots and may lead to synthesis protocols for a wide range of III-V quantum dots.
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