Electrochemically Active Thin Carbon Films with Enhanced Adhesion to Silicon Substrates


AU: 
Niu, PF; Asturias-Arribas, L; Gich, M; Fernandez-Sanchez, C; Roig, A
SO: 
ACS APPLIED MATERIALS & INTERFACES
Autores del GTQ: 
Líneas de Investigación: 
Lab-on-a-Chip electroquímicos
VL: 
8
IS: 
45
BP: 
31092
EP: 
31099
PY: 
2016
SN: 
1944-8244
IF: 
7.15
Año IF: 
2015
Resumen: 

Thin carbon films deposited on technologically relevant substrates, such as silicon wafers, can be easily implemented in miniaturized electrochemical devices and used for sensing applications. However, a major issue in most carbon films is the weak film/substrate adhesion that shortens the working device lifetime. This paper describes the facile preparation of robust thin carbon films on silicon substrates by one-pot sol gel synthesis. The improved adherence of these carbon films is based on the incorporation of silica through the controlled synthesis of a resorcinol/formaldehyde gel modified with aminopropyltriethoxysilane. The films demonstrate excellent adhesion to the silicon substrate, good homogeneity, excellent electrical conductivity and superior electrochemical performance. Moreover, this approach opens the door to the fabrication of carbon thin-film electrodes by photolithographic techniques.

DT: 
Article en revistes indexades
Percentil: 
HIGH
Año Percentil: 
2015
Categoría: 
MATERIALS SCIENCE, MULTIDISCIPLINARY
KW: 
carbon films; silica; sol-gel; adhesion; electrochemical sensors; hybrid materials