[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
[2] Univ Texas San Antonio, Dept Chem, San Antonio, TX 78249 USA
[3] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[4] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA
[5] Univ N Texas, Dept Chem, Denton, TX 76203 USA