Obtenção de filmes espessos de seleneto de cobre sobre carbono vítreo, ouro, titânio e cobre

Química Nova

Adriano César Rabelo¹  Tatiane Moraes Arantes¹  Otávio Luiz Bottecchia¹ 

[1] ,Universidade Federal de Uberlândia Instituto de Química Uberlândia MG ,Brasil

关键词: copper selenide;    thin films;    semiconductor;   

DOI  :  10.1590/S0100-40422007000200009

来源: SciELO

【 摘 要 】

Copper selenide (berzelianite) films were prepared on the title substrates using the chemical bath deposition technique (CBD). Film composition was determined by energy dispersion of x-rays. The kinetics of film growth is parabolic and film adherence limits the film thickness. On titanium, copper selenide forms islands that do not completely cover the surface, unless the substrate is prepared with a tin oxide layer; film composition also depends on the titanium oxide layer. On vitreous carbon, CBD and mechanical immobilization techniques lead to films with similar resistances for the electron transfer across the film/substrate interface. On gold, composition studies revealed that film composition is always the same if the pH is in the range from 8 to 12, in contrast to films prepared by an ion-ion combination route. On copper, a new procedure for obtaining copper selenide films as thick as 5 µm has been developed.

【 授权许可】

CC BY-NC   
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