1. On the Nature of Localization in Ti doped Si
- Author
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Zhang, Yi, Nelson, R., Tam, K. -M., Ku, W., Yu, U., Vidhyadhiraja, N. S., Terletska, H., Moreno, J., Jarrell, M., and Berlijn, T.
- Subjects
Condensed Matter - Strongly Correlated Electrons ,Strongly Correlated Electrons (cond-mat.str-el) ,FOS: Physical sciences ,Condensed Matter::Strongly Correlated Electrons ,Disordered Systems and Neural Networks (cond-mat.dis-nn) ,Condensed Matter - Disordered Systems and Neural Networks - Abstract
Intermediate band semiconductors hold the promise to significantly improve the efficiency of solar cells, but only if the intermediate impurity band is metallic. We apply a recently developed first principles method to investigate the origin of electron localization in Ti doped Si, a promising candidate for intermediate band solar cells. Although Anderson localization is often overlooked in the context of intermediate band solar cells, our results show that in Ti doped Si it plays a more important role in the metal insulator transition than Mott localization. Implications for the theory of intermediate band solar cells are discussed., Comment: 5 pages, 3 figures for the main text. 8 pages, 11 figures for the supplementary material
- Published
- 2018
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