[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Ctr Electron Microscopy, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
[3] Hangzhou Bluestar New Mat Technol Co Ltd, Hangzhou 310012, Zhejiang, Peoples R China