Residual stress in porous silicon film with micro-Raman spectroscopy

2009 ◽  
Author(s):  
Wei Qiu ◽  
Qiu Li ◽  
Yilan Kang ◽  
Zhenkun Lei
2004 ◽  
Vol 21 (2) ◽  
pp. 403-405 ◽  
Author(s):  
Lei Zhen-Kun ◽  
Kang Yi-Lan ◽  
Hu Ming ◽  
Qiu Yu ◽  
Xu Han ◽  
...  

2005 ◽  
Vol 22 (4) ◽  
pp. 984-986 ◽  
Author(s):  
Lei Zhen-Kun ◽  
Kang Yi-Lan ◽  
Cen Hao ◽  
Hu Ming ◽  
Qiu Yu

2010 ◽  
Vol 48 (11) ◽  
pp. 1119-1125 ◽  
Author(s):  
Qiu Li ◽  
Wei Qiu ◽  
Haoyun Tan ◽  
Jiangang Guo ◽  
Yilan Kang

Coatings ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 500 ◽  
Author(s):  
Qiu Li ◽  
Yanrong Gou ◽  
Tie-Gang Wang ◽  
Tingyi Gu ◽  
Qiang Yu ◽  
...  

Residual stress in coatings often affects the service performance of coatings, and the residual stresses in some local areas even lead to premature failure of coatings. In this work, we characterized the residual stress of local micro-areas of a nanocrystalline Cr2O3 coating deposited on a Si wafer through micro-Raman spectroscopy, including the depositional edge zone where the electrode was placed, the micro-area containing Cr2O3 macroparticles, and other micro-areas vulnerable to cracks. To accurately measure the thickness of the coating, we combined optical interferometry and direct measurement by a profilometer. The results indicate the existence of in-plane tensile residual stress on the Cr2O3 coating. In thick coatings, the residual stress is independent of the coating thickness and is stable between 0.55 GPa and 0.75 GPa. As the coating thickness is less than 0.8 μm, the residual stress is directly related to the coating thickness. This in-plane tensile stress is considered as the origin of the observed microcrack, which can partially release the stress.


2017 ◽  
Vol 27 (10) ◽  
pp. 105014 ◽  
Author(s):  
Chang Song ◽  
Liqun Du ◽  
Leijie Qi ◽  
Yu Li ◽  
Xiaojun Li ◽  
...  

2017 ◽  
Vol 231 (9) ◽  
Author(s):  
Sangeetha Periasamy ◽  
Sasirekha Venkidusamy ◽  
Ragavendran Venkatesan ◽  
Jeyanthinath Mayandi ◽  
Joshua Pearce ◽  
...  

Abstract:The size effect of nanoscale silicon in both amorphous and porous silicon was investigated with micro-Raman spectroscopy. Silicon nanostructures in amorphous silicon were deposited on quartz substrates by plasma enhanced chemical vapor deposition (PECVD) with deposition powers of 15, 30 and 50 W. Micro-Raman spectra of the nanostructured silicon show the T


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