Silicon Nanocrystal Superlattice Nucleation and Growth

Colloidal dodecene-passivated silicon (Si) nanocrystals were dispersed in hexane or chloroform and deposited onto substrates as face-centered cubic superlattices by slowly evaporating the solvent. The uniformity of the nanocrystals enables extended order; however, the solvent and the evaporation pro...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 33(2017), 45 vom: 14. Nov., Seite 13068-13076
1. Verfasser: Guillaussier, Adrien (VerfasserIn)
Weitere Verfasser: Yu, Yixuan, Voggu, Vikas Reddy, Aigner, Willi, Cabezas, Camila Saez, Houck, Daniel W, Shah, Tushti, Smilgies, Detlef-M, Pereira, Rui N, Stutzmann, Martin, Korgel, Brian A
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, U.S. Gov't, Non-P.H.S. Research Support, Non-U.S. Gov't
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520 |a Colloidal dodecene-passivated silicon (Si) nanocrystals were dispersed in hexane or chloroform and deposited onto substrates as face-centered cubic superlattices by slowly evaporating the solvent. The uniformity of the nanocrystals enables extended order; however, the solvent and the evaporation protocol significantly influence the self-assembly process, determining the morphology of the films, the extent of order, and the superlattice orientation on the substrate. Chloroform yielded superlattices with step-flow growth morphologies and (111)SL, (100)SL, and (110)SL orientations. Hexane led to mostly island morphologies when evaporated at room temperature with exclusively (111)SL orientations. Higher evaporation temperatures led to more extensive step-flow deposition. A model for the surface diffusion of nanocrystals adsorbed on the superlattice surface is developed 
650 4 |a Journal Article 
650 4 |a Research Support, U.S. Gov't, Non-P.H.S. 
650 4 |a Research Support, Non-U.S. Gov't 
700 1 |a Yu, Yixuan  |e verfasserin  |4 aut 
700 1 |a Voggu, Vikas Reddy  |e verfasserin  |4 aut 
700 1 |a Aigner, Willi  |e verfasserin  |4 aut 
700 1 |a Cabezas, Camila Saez  |e verfasserin  |4 aut 
700 1 |a Houck, Daniel W  |e verfasserin  |4 aut 
700 1 |a Shah, Tushti  |e verfasserin  |4 aut 
700 1 |a Smilgies, Detlef-M  |e verfasserin  |4 aut 
700 1 |a Pereira, Rui N  |e verfasserin  |4 aut 
700 1 |a Stutzmann, Martin  |e verfasserin  |4 aut 
700 1 |a Korgel, Brian A  |e verfasserin  |4 aut 
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