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

Quimica nova

Bottecchia, Otávio Luiz¹  Rabelo, Adriano César¹  Arantes, Tatiane Moraes¹ 

[1] Universidade Federal de Uberlândia, Uberlândia, Brasil

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 chemicalbath deposition technique (CBD). Film composition was determined by energy dispersionof x-rays. The kinetics of film growth is parabolic and film adherence limitsthe film thickness. On titanium, copper selenide forms islands that do not completelycover 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 resistancesfor the electron transfer across the film/substrate interface. On gold, compositionstudies revealed that film composition is always the same if the pH is in therange from 8 to 12, in contrast to films prepared by an ion-ion combinationroute. On copper, a new procedure for obtaining copper selenide films as thickas 5 µm has been developed.

【 授权许可】

CC BY