A simple technique for the determination of mechanical strain in thin films with applications to polysilicon
作者:
H. Guckel,
T. Randazzo,
D. W. Burns,
期刊:
Journal of Applied Physics
(AIP Available online 1985)
卷期:
Volume 57,
issue 5
页码: 1671-1675
ISSN:0021-8979
年代: 1985
DOI:10.1063/1.334435
出版商: AIP
数据来源: AIP
摘要:
Free standing, doubly supported micromechanical beams which are fabricated from films with built‐in compressive strain fields buckle at critical geometries. Experimental determination of the onset of buckling for known geometries leads to a direct measurement of the strain level in the films. This idea is supported by appropriate theory for experimental structures which form clamped, doubly supported beams with constant cross section and varying lengths. Application to low pressure chemical vapor deposition polysilicon leads to the conclusion that strain fields of 0.2% reduce to 0.05% during annealing.
点击下载:
PDF
(449KB)
返 回