首页|Interface properties of CsPbBr3/CsPbI3 perovskite heterostructure for solar cell
Interface properties of CsPbBr3/CsPbI3 perovskite heterostructure for solar cell
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NSTL
Elsevier
We explore the interface properties of perovskite heterostructure CsPbBr3/CsPbI3 through first-principles calculations. The structural interface is formed by the bonding of Cs-Br and Cs-I with bond length of similar to 4.106 and 3.922 angstrom. The upshift of Goldsmith tolerance factor in the range 0.8 < t < 1 from t < 0.8 is revealed for the bi-layer interface, from bulk, reflecting the structural rearrangement from anisotropy to isotropy in confinement. The band gap arises mainly due to the energy difference of I-5p orbital than that of Br-4p at the valence band and Pb-6p at the conduction band. Heavier halide shows the red shift in the absorption spectra, for the pristine monolayer component. For the bilayer geometry, iodine contribution is more observed than that of bromine and the underlying interface properties may be useful for solar cell devices application.
Perovskite solar cellsCsPbBr3CsPbI3InterfaceFirst-principles calculationELECTRONIC-PROPERTIESHALIDE PEROVSKITESNANOCRYSTALSOXIDEBRSIMULATIONSEFFICIENCYCRYSTALCSPBX3CL
NSTL
Elsevier
