CH₃NH₃PbI(3-x)(BF₄)x: molecular ion substituted hybrid perovskite.

@article{Nagane2014CHNHPbI3xBFxMI,
  title={CH₃NH₃PbI(3-x)(BF₄)x: molecular ion substituted hybrid perovskite.},
  author={Satyawan Nagane and Umesh Pandharinath Bansode and Onkar S. Game and Shraddha Y. Chhatre and Satishchandra B. Ogale},
  journal={Chemical communications},
  year={2014},
  volume={50 68},
  pages={
          9741-4
        }
}
A molecular ion (BF4(-)) substituted hybrid perovskite CH3NH3PbI(3-x)(BF4)x is synthesized. The substituted perovskite shows significant enhancement in electrical conductivity at low frequencies and improved photoresponse under AM1.5 illumination as compared to the perovskite (CH3NH3PbI3). 

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References

SHOWING 1-10 OF 28 REFERENCES
Band-gap tuning of lead halide perovskites using a sequential deposition process
Band-gap tuning of mixed anion lead halide perovskites (MAPb(I1−xBrx)2 (0 ≤ x ≤ 1)) has been demonstrated by means of a sequential deposition process. The optical properties of perovskite hybrids can
NH2CH═NH2PbI3: An Alternative Organolead Iodide Perovskite Sensitizer for Mesoscopic Solar Cells
A new nearly cubic NH2CH═NH2PbI3 (FAPbI3) perovskite was synthesized for the mesoscopic solar cells. The measured band gap of bulk FAPbI3 is 1.43 eV and it is therefore potentially superior than the
Organometal halide perovskites as visible-light sensitizers for photovoltaic cells.
TLDR
Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Conversion of light to electricity by cis-X2bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) charge-transfer sensitizers (X = Cl-, Br-, I-, CN-, and SCN-) on nanocrystalline titanium dioxide electrodes
cis-X 2 Bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) complexes (X=Cl - , Br, I - , CN - , and SCN - ) were prepared and characterized with respct to their absorption, luminescence, and redox
Planar heterojunction perovskite solar cells via vapor-assisted solution process.
TLDR
A low-temperature vapor-assisted solution process is demonstrated to construct polycrystalline perovskite thin films with full surface coverage, small surface roughness, and grain size up to microscale, paving the way for high reproducibility of films and devices.
6.5% efficient perovskite quantum-dot-sensitized solar cell.
TLDR
Perovskite QD-sensitized 3.6 μm-thick TiO(2) film shows maximum external quantum efficiency (EQE) of 78.6% at 530 nm and solar-to-electrical conversion efficiency of 6.54% at AM 1.5G 1 sun intensity (100 mW cm(-2)), which is by far the highest efficiency among the reported inorganic quantum dot sensitizers.
First-Principles Modeling of Mixed Halide Organometal Perovskites for Photovoltaic Applications
We computationally investigate organometal CH3NH3PbX3 and mixed halide CH3NH3PbI2X perovskites (X = Cl, Br, I), which are key materials for high efficiency solid-state solar cells. CH3NH3PbX3
Mixed-organic-cation perovskite photovoltaics for enhanced solar-light harvesting.
TLDR
This work shows that the goal of extending the optical-absorption onset of perovskite-based photovoltaics further into the red to enhance solar-light harvesting can be reached by using a mixture of formamidinium and methylammonium cations, which leads to an enhanced short-circuit current and thus superior devices to those based on only CH3 NH3 (+).
Highly efficient solar cell polymers developed via fine-tuning of structural and electronic properties.
TLDR
It was found that films with finely distributed polymer/fulleride interpenetrating network exhibited improved solar cell conversion efficiency, and the results proved that polymer solar cells have a bright future.
Chloride Inclusion and Hole Transport Material Doping to Improve Methyl Ammonium Lead Bromide Perovskite-Based High Open-Circuit Voltage Solar Cells.
TLDR
P-doping an organic hole transport material with a deep HOMO level and wide band gap to reduce recombination increased the cell's VOC to 1.5 V, a 0.2 V increase from earlier results with the pristine Br analogue with an identical band gap, and the current density increased from ∼1 to ∼4 mA/cm(2).
...
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3
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