Avaliação das condições de crescimento direcional do material composito in situ SnSe-SnSe2
AUTOR(ES)
Marcelo Zanotello
DATA DE PUBLICAÇÃO
1998
RESUMO
The Sn-Se eutectic solidification allows one to obtain a lamellar structure, formed by SnSe and SnSe2 compounds, which are p and n semiconducting types, respectively. The SnSe-SnSe2 eutectic composite is a promising material to be used in photovoltaic device manufacturing. In this work, the Sn-Se alloy corresponding to eutectic composition was studied by using DSC thermal analysis and directional solidification at several growth rates in a vertical Bridgman-Stockbarger unit. The objective of the experiments was to investigate the influence of the growth rate on the growth undercooling, as well as on the eutectic microstructure. The microstructure analysis .showed that a very regular and aligned structure formed by the SnSe and SnSe2solid phases can be produced. The results obtained led to the evaluation of a relationship among growth rates, eutectic growth temperature and lamellar spacing
ASSUNTO(S)
solidificação ligas (metalurgia) cristais - crescimento materiais compostos
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=vtls000130078Documentos Relacionados
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