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Filling of Nanometric Pores with Polymer by Initiated Chemical Vapor Deposition
Author(s) -
VanStraaten Ma,
Ben Hadj Mabrouk Amal,
Veillerot Marc,
Licitra Christophe,
D’Agosto Franck,
Jousseaume Vincent
Publication year - 2020
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.202000200
Subject(s) - materials science , polymer , polymerization , chemical vapor deposition , methacrylate , microporous material , porosity , fourier transform infrared spectroscopy , chemical engineering , ellipsometry , microelectronics , thin film , polymer chemistry , nanotechnology , composite material , engineering
The integration of porous thin films using microelectronic compatible processes sometimes requires the protection of the interior of the pores during the critical integration steps. In this paper, the polymerization of neo‐pentyl methacrylate (npMA) is performed via initiated chemical vapor deposition (iCVD) on a porous organosilicate (SiOCH) and on a dense SiOCH. The characterizations by Fourier‐transform infrared spectroscopy, spectroscopic ellipsometry, and time‐of‐flight secondary ion mass spectrometry of the different stacks show that iCVD is a powerful technique to polymerize npMA in the nanometric pores and thus totally fill them with a polymer. The study of the pore filling for very short iCVD durations shows that the polymerization in the pores is complete in less than ten seconds and is uniform in depth. Then, the poly(npMA) film growth continues on top of the filled SiOCH layer. These characteristics make iCVD a straightforward and very promising alternative to other infiltration techniques in order to fill the porosity of microporous thin films.