AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Issue no. 4(I) / 2009 | |||||||
Article: |
MECHANISTIC STUDY OF SE AND GE SEMICONDUCTORS ELECTRODEPOSITION. Authors: ADRIANA SAMIDE, BOGDAN TUTUNARU, MIRCEA PREDA. |
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Abstract: The electrodeposition and mechanism of nucleation of Se and Se-Ge films was studied in this work. The employed experimental techniques were potentiostatic polarization and chronoamperometry. The initial deposition of Se film by potentiostatic polarization shows that the crystallization potential of -0,40 V and corresponding densities linearly depends on the H2SeO3 concentration and potential scan rate. The simultaneous presence of both species in the bath composition produced a new peak at -0,50 V. The chronoamperometric study indicate a 3D complex mechanism for Se and Se-Ge electrodeposition. The morphological changes in surface of working electrode was analysed with an Euromex microscope. Keywords: Semiconductors, Se and Se2Ge electrodeposition, nucleation mechanism |
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