Journal Article

PUBDB-2024-06720

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Insights into the formation of CdSe nanoplatelets using a flow reactor

Funk, J. (Corresponding author)Extern* ; Sochor, B.Extern*DESY* ; Koyiloth Vayalil, S.Extern*DESY* ; Weller, H.Extern*

2024
RSC Publ. Cambridge

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Please use a persistent id in citations: doi:10.1039/D4NR03804E  doi:10.3204/PUBDB-2024-06720

Abstract: In recent years, the anisotropic semiconductor nanoplatelets (NPLs) gained interest due to their unique optical properties, which depend primarily on their thickness. However, the formation mechanism behind the zinc blende CdSe NPLs remains unclear. Several theories were presented and discussed, but a concrete mechanism has not yet been found with evidence. Here, we want to present a synthesis of CdSe NPLs in a flow reactor with a liquid precursor, enabling in situ absorbance measurements. The flow reactor allows for more control in obtaining early-stage synthesis samples, which were ex situ examined with optical spectroscopy, transmission electron microscopy, as well as small-angle and powder X-ray diffraction. Our results show that CdSe magic size clusters (MSCs) formed prior to the formation of CdSe NPLs, indicating that these CdSe MSCs are necessary for the initial CdSe NPLs growth.

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Contributing Institute(s):

1. PETRA-D (FS-PETRA-D)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. GRK 2536 - GRK 2536: Hybridstrukturen auf der Nanometerskala: Chemische Konzepte zur Herstellung heterogener Nanostrukturen mit anisotropen Materialeigenschaften (NANOHYBRID) (408076438) (408076438)
4. LINCHPIN - A platform to LINk between CHemistry and PhysIcs of colloidal Nanomaterials (818941) (818941)
5. SINE2020 - World class Science and Innovation with Neutrons in Europe 2020 – SINE2020 (654000) (654000)

Experiment(s):

1. PETRA Beamline P03 (PETRA III)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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