This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
 

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Polycrystalline silicon (poly-Si) is widely applied to make low-cost, highly efficient, and large-area solar cells. However, poly-Si involves electrically active states that deteriorate the conversion efficiency of solar cells. [1, 2] Note that in band gap the electrical activity of grain boundary depends on the atomic structure of grain boundary since the dangling-bonds or extra bonds generates deep-level states in the band gap. [3, 4]

[1] M. Imaizumi, T. Ito, M. Yamaguchi and K. Kaneko: J. Appl. Phys. 47 (1997) 7635 - 7640.
[2] F. Cleri, P. Keblinski, L. Colombo, S. R. Phillpot and D. Wolf: Phys. Rev. B 57 (1998) 6247 - 6250.
[3] W. B. Jackson, N. M. Johnson and D. K. Biegelsen: Appl. Phys. Lett. 43 (1983) 195 - 197.
[4] D. Jousse, S. L. Delage and S. S. Iyer: Phil. Mag. B 63 (1991) 443 - 455.