High Ge Content SiGe Selective Processes for Source/Drain in Manufacturing the Next Generations of pMOS Transistors
Autor: | Liesbeth Witters, Roger Loo, Benjamin Vincent, W. Vanherle, Andriy Hikavyy, J Dekoster |
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Rok vydání: | 2013 |
Předmět: | |
Zdroj: | ECS Journal of Solid State Science and Technology. 2:P282-P286 |
ISSN: | 2162-8777 2162-8769 |
Popis: | Selectivity of different SiGe processes toward oxide and nitride has been studied on both: blanket and patterned Si wafers. Three different precursors: silane, dichlorosilane and disilane were used for SiGe growth. It was found that the growth of SiGe with Ge content higher than 35% was intrinsically selective toward SiO2; SiGe with any Ge content, up to pure Ge, could not be grown selectively toward nitride; in order to get selectivity toward nitride, an etching gas should be used and its amount in the gas phase decreases with an increase of the Ge content. |
Databáze: | OpenAIRE |
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