Peculiarities of CdS nanocrystal formation at annealing of a Langmuir‐Blodgett matrix
| Autor: | S. A. Teys, Kirill A. Svit, Yakushev Maksim, Konstantin Zhuravlev, Larisa L. Sveshnikova, Dmitry Yu. Protasov |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Silicon Annealing (metallurgy) chemistry.chemical_element Nanotechnology 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Langmuir–Blodgett film law.invention chemistry Nanocrystal Chemical engineering law 0103 physical sciences Pyrolytic carbon Dewetting Wetting Scanning tunneling microscope 0210 nano-technology |
| Zdroj: | physica status solidi c. 13:417-420 |
| ISSN: | 1610-1642 1862-6351 |
| DOI: | 10.1002/pssc.201510285 |
| Popis: | Formation and assembling of CdS nanocrystals (NC) on highly-ordered pyrolytic graphite (HOPG) and on oxidized silicon substrates have been investigated by atomic force microscopy (AFM) and scanning tunneling microscopy (STM). NC were initially formed within a Langmuir-Blodgett (LB) matrix of cadmium behenate. The LB matrix was then removed by annealing in an ammonia atmosphere. It is shown that the NC self-assembling is mainly determined by the LB matrix wetting properties. In case of wettable HOPG substrate homogeneous matrix evaporation occurs that leads to coarsening of the NC arrays as the main self-assembly process. Otherwise, NC prepared on non-wettable SiO2-Si substrate demonstrate arrays formation determined by the LB matrix dewetting process. For the both cases, the influence of kinetic limitations connected with matrix evaporation rate on the self-assembly process is observed. (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
| Databáze: | OpenAIRE |
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