Selective Growth of B- and C-doped SiGe Layers in Unprocessed and Recessed Si Openings for pMOSFET Application

Autor: Erik Trybom, Henry H. Radamson, Pooya Tabib Zadeh Adibi, Luigi Di Benedetto, Mohammad Shayestehaminzadeh, Mohammadreza Kolahdouz, Ali Afshar Farniya
Rok vydání: 2009
Předmět:
Zdroj: ECS Transactions. 25:81-88
ISSN: 1938-6737
1938-5862
DOI: 10.1149/1.3207578
Popis: This work presents pattern dependency of selective epitaxial growth of boron- or carbon-doped SiGe layers in recessed or unprocessed openings. The layer profile and quality of epi-layers were found to be dependent on chip layout and the growth parameters. Carbon- and boron-doping compensated the strain in SiGe layers and when both dopants are introduced the strain reduction was additive. The incorporation of boron and carbon in SiGe matrix showed to be a competitive action. The concentration of carbon decreased when the boron amount increased in SiGe layers with higher Ge content.
Databáze: OpenAIRE