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Effect of sodium incorporation into CuInSe2 from first principles
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10.1063/1.4819105
/content/aip/journal/jap/114/8/10.1063/1.4819105
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/8/10.1063/1.4819105

Figures

Image of FIG. 1.
FIG. 1.

Formation energies of sodium-related point defects and dumbbell in CIS as a function of Fermi energy. At the Cu-rich limit, the corresponding chemical potentials for In and Se are and . At the Cu-poor limit, the chemical potentials are , , and . The chemical potential for sodium is that of metallic bcc sodium. The dotted lines give error estimates for the formation energies at each Fermi level position. The dashed line marks the band gap obtained with HSE06.

Image of FIG. 2.
FIG. 2.

Kohn-Sham band structures for bulk CIS, , , and . The occupied levels are drawn in dark blue and the unoccupied levels in light blue. The dashed lines illustrate the defect-induced levels compared to the bulk band structure for and .

Image of FIG. 3.
FIG. 3.

Diffusion paths of Na-related defects in CIS. The red stars and open circles represent values calculated with HSE06 and PBE-GGA, respectively. Thedotted lines are guides to the eye.

Tables

Generic image for table
Table I.

Binding energies () of Na-related defect complexes. The charge states of the isolated defects are 1– for , 0 for , and 1+ for Na.

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/content/aip/journal/jap/114/8/10.1063/1.4819105
2013-08-22
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of sodium incorporation into CuInSe2 from first principles
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/8/10.1063/1.4819105
10.1063/1.4819105
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