Electronic structure of PbSnS₃ and PbGeS₃ semiconductor compounds with the mixed cation coordination
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Electronic structure of PbSnS₃ and PbGeS₃ semiconductor compounds with the mixed cation coordination
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| Creator |
Bletskan, M.M.
Bletskan, D.I. Kabatsii, V.M. |
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| Description |
The self-consistent band structure calculation of PbSnS₃ and PbGeS₃ ternary compounds with the mixed cation coordination was performed using the ab initio density functional theory method. It has been found that both compounds are indirect-gap semiconductors. The calculated band-gap widths are Egi = 0.75 eV for PbSnS₃ and Egi = 1.96 eV for PbGeS₃. It was performed the analysis of partial contributions to the total density of electronic states, which allowed to identify the genetic nature of valence and conduction bands. The feature of the structure of occupied energy bands in these compounds is the presence of isolated quasi-core d-band of lead atoms and the contribution of Pb6s-states of lone-electron pair to the top of valence band as well as to the second occupied subband. The electron density maps in the different planes have been analyzed. They clearly demonstrate presence of covalent-ionic bond character within the infinite chains and ribbons with prevailing charge concentration on Ge–S, Sn–S, Pb–S bonds, and a weak van der Waals bond component with participation of lone-electron pair of lead between layers as well as ribbons.
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| Date |
2017-06-13T15:51:11Z
2017-06-13T15:51:11Z 2015 |
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| Type |
Article
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| Identifier |
Electronic structure of PbSnS₃ and PbGeS₃ semiconductor compounds with the mixed cation coordination / M.M. Bletskan, D.I. Bletskan, V.M. Kabatsii // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2015. — Т. 18, № 1. — С. 12-19. — Бібліогр.: 24 назв. — англ.
1560-8034 DOI: 10.15407/spqeo18.01.012 PACS 71.15.-m, 71.20.-b http://dspace.nbuv.gov.ua/handle/123456789/121155 |
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| Language |
en
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| Relation |
Semiconductor Physics Quantum Electronics & Optoelectronics
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| Publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
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