Comparative study of CdTe sources used for deposition of CdTe thin films by close spaced sublimation technique

AUTOR(ES)

Pinheiro, Wagner Anacleto, Falcão, Vivienne Denise, Cruz, Leila Rosa de Oliveira, Ferreira, Carlos Luiz

FONTE

Materials Research

DATA DE PUBLICAÇÃO

2006-03

RESUMO

Unlike other thin film deposition techniques, close spaced sublimation (CSS) requires a short source-substrate distance. The kind of source used in this technique strongly affects the control of the deposition parameters, especially the deposition rate. When depositing CdTe thin films by CSS, the most common CdTe sources are: single-crystal or polycrystalline wafers, powders, pellets or pieces, a thick CdTe film deposited onto glass or molybdenum substrate (CdTe source-plate) and a sintered CdTe powder. In this work, CdTe thin films were deposited by CSS technique from different CdTe sources: particles, powder, compact powder, a paste made of CdTe and propylene glycol and source-plates (CdTe/Mo and CdTe/glass). The largest deposition rate was achieved when a paste made of CdTe and propylene glycol was used as the source. CdTe source-plates led to lower rates, probably due to the poor heat transmission, caused by the introduction of the plate substrate. The results also showed that compacting the powder the deposition rate increases due to the better thermal contact between powder particles.

Documentos Relacionados

• Influence of deposition parameters on the properties of CdTe films deposited by close spaced sublimation
• Characterization of CdTe thin films grown on glass by hot wall epitaxy
• Eletrodeposição de filmes finos de CdTe para aplicação em células solares fotovoltáicas.
• Caracterização de filmes finos de CdTe por meio de teoria de escala anômala
• Pseudopotential Study of CdTe Quantum Dots: Electronic and Optical Properties