Bulk inversion asymmetry effect on band structure and optical transition of a new class all-inorganic cubic perovskite nanoplatelet
The band structures at near the R point of all-inorganic cubic CsSnBr3 perovskite nanoplatelets (NPLs) are investigated by using an 8-band k·p method. The Luttinger parameters are given by fitting the first-principles results, the E-K curves and optical transition rule at near the R point are obtain...
Gespeichert in:
Veröffentlicht in: | AIP advances 2018-09, Vol.8 (9), p.095206-095206-7 |
---|---|
1. Verfasser: | |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The band structures at near the R point of all-inorganic cubic CsSnBr3 perovskite nanoplatelets (NPLs) are investigated by using an 8-band k·p method. The Luttinger parameters are given by fitting the first-principles results, the E-K curves and optical transition rule at near the R point are obtained. The bulk invasion asymmetry is taken into consideration in the method. The splitting of energy subbbands is observed at non-R point due to the bulk invasion asymmetry effect, however they are still two-fold degenerated at the R point. The optical transition rule follows the Δn=0 for the thin NPLs, however, for the thicker NPLs, the optical transition rule of Δn=0 does not hold. The results are helpful to understand the cubic perovskite nanoplatelet based spintronics and optoelectronics. |
---|---|
ISSN: | 2158-3226 2158-3226 |
DOI: | 10.1063/1.5048349 |