Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/18854
Título: | Ge nanocrystals with highly uniform size distribution deposited on alumina at room temperature by pulsed laser deposition: structural, morphological, and charge trapping properties |
Autor(es): | Martín-Sánchez, J. Marques, L. Vieira, E. M. F. Doan, Q. T. Marchand, A. El Hdiy, A. Rolo, Anabela G. Pinto, S. R. C. Ramos, Marta M. D. Chahboun, A. Gomes, M. J. M. |
Palavras-chave: | Pulsed laser deposition Germanium nanocrystals Shadow mask Room temperature Semiconductor Synthesis |
Data: | Abr-2012 |
Editora: | Springer Verlag |
Revista: | Journal of Nanoparticle Research |
Resumo(s): | In this work, we report on the synthesis of Ge nanocrystals (NCs) by pulsed laser deposition (PLD) at room temperature (RT) in an argon atmosphere without any further annealing process. Our results show that functional thin films of crystalline Ge nanoparticles with spherical shapes can be obtained by PLD directly on alumina layers deposited on n-doped Si (100) substrates. In addition, we also demonstrate that a uniform size distribution of NCs with an average diameter of about 3 nm and a density of 2.3x10^11 cm^-2 can be obtained by optimizing a shadow mask set-up, where a solid disk is introduced between the target and the substrate. Charge/discharge effects in Ge NCs deposited on a high-k amorphous alumina layer are also evidenced by conductive atomic force microscopy, which makes them suitable for memory applications. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/18854 |
DOI: | 10.1007/s11051-012-0843-3 |
ISSN: | 1388-0764 1572-896X |
Versão da editora: | http://www.springerlink.com/ |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - CEP - Artigos/Papers (with refereeing) CDF - FCT - Artigos/Papers (with refereeing) CDF - FMNC - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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JNP 14-843 (2012).pdf Acesso restrito! | Documento principal | 936,47 kB | Adobe PDF | Ver/Abrir |