Obtaining copper selenide thick films on vitreous carbon, gold, titanium and copper

Química Nova

Universidade Federal de Uberlândia, Uberlândia, Brasil¹  Bottecchia, Otávio Luiz¹  Rabelo, Adriano César¹  Arantes, Tatiane Moraes¹ 

关键词: copper selenide;    thin films;    semiconductor.;   

DOI  :  10.1590/S0100-40422007000200009

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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】

Unknown