Rietveld refinement of crystal structure of perovskite CH3NH3Pb(Sb)I3 solar cells

Rietveld refinement of crystal structure of perovskite CH3NH3Pb(Sb)I3 solar cells

The crystal structures of perovskite CH3NH3Pb1−xSbxI3 (x = 0 and 0.15) films in the solar cell configuration were studied by using Rietveld refinement. Optimizing atomic positions and site occupancies, satisfactory agreement was obtained between measured and calculated X-ray diffraction profiles. Th...

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Veröffentlicht in:Japanese Journal of Applied Physics 2018-02, Vol.57 (2S2), p.02CE02
Hauptverfasser: Ando, Yuji, Oku, Takeo, Ohishi, Yuya
Format: Artikel
Sprache:eng
Schlagworte:
Antimony
Atomic structure
Crystal structure
Diffraction
Lead
Perovskites
Photovoltaic cells
Silicon wafers
Solar cells
X-ray diffraction
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Zusammenfassung:The crystal structures of perovskite CH3NH3Pb1−xSbxI3 (x = 0 and 0.15) films in the solar cell configuration were studied by using Rietveld refinement. Optimizing atomic positions and site occupancies, satisfactory agreement was obtained between measured and calculated X-ray diffraction profiles. The refined composition ratio of metal, methylammonium (MA), and halogen was for the Sb-free solar cell. For the antimonized solar cell, this ratio was . The decreased MA occupancy in the antimonized solar cell was considered as a result of the compensation effect of the increased positive charge brought about by replacing Pb2+ with Sb3+.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.57.02CE02