Analytical electron microscopy study of nanometre-scale oxide formed in contact-hole-bottom Si surfaces

Autor: Sungwook Park, Ho‐Seok Lee, Joong-Jung Kim, Yoon-Baek Park, Tae-Sun Back, Soun-Young Lee, Ju-Chul Park, Jun-Mo Yang
Rok vydání: 2003
Předmět:
Zdroj: Journal of electron microscopy. 52(3)
ISSN: 0022-0744
Popis: Nanometre-scale interfacial oxides formed in contact-hole -bottom Si surfaces were investigated by analytical electron microscopy coupled with a field-emission transmission electron microscope. The results showed that thechemical state of the residual oxide formed during reactive-ion etching was mostly changed from the suboxide of Si 2 + or Si 3 + to the oxide of Si 4 + by the following light-etch treatment. Consequently, the process of removing the residual oxide by light-etch treatment was improved and it contributed to the accomplishment of lower contact resistance.
Databáze: OpenAIRE