High Phase Stability in CsPbI3 Enabled by Pb–I Octahedra Anchors for Efficient Inorganic Perovskite Photovoltaics
@article{Wang2020HighPS, title={High Phase Stability in CsPbI3 Enabled by Pb–I Octahedra Anchors for Efficient Inorganic Perovskite Photovoltaics}, author={Yong Wang and Gaoyuan Chen and Dan Ouyang and Xinjun He and Can Li and Ruiman Ma and Wan-Jian Yin and Wallace C. H. Choy}, journal={Advanced Materials}, year={2020}, volume={32} }
CsPbI3 inorganic perovskite has exhibited some special properties particularly crystal structure distortion and quantum confinement effect, yet the poor phase stability of CsPbI3 severely hinders its applications. Herein, the nature of the photoactive CsPbI3 phase transition from the perspective of PbI6 octahedra is revealed. A facile method is also developed to stabilize the photoactive phase and to reduce the defect density of CsPbI3. CsPbI3 is decorated with multifunctional 4‐aminobenzoic…
43 Citations
Efficient and Stable CsPbI3 Inorganic Perovskite Photovoltaics Enabled by Crystal Secondary Growth
- Materials ScienceAdvanced materials
- 2021
A novel concept of defect compensation in inorganic perovskites through crystal secondary growth induced by solid-state reaction that is promising for various optoelectronic applications is proposed.
Highly Efficient and Stable CsPbTh3 (Th = I, Br, Cl) Perovskite Solar Cells by Combinational Passivation Strategy
- Materials ScienceAdvanced science
- 2022
Abstract The distorted lead iodide octahedra of all‐inorganic perovskite based on triple halide‐mixed CsPb(I2.85Br0.149Cl0.001) framework have made a tremendous breakthrough in its black phase…
High-efficiency and thermal/moisture stable CsPbI2.84Br0.16 inorganic perovskite solar cells enabled by a multifunctional cesium trimethylacetate organic additive
- Materials Science
- 2021
All-inorganic cesium lead iodine perovskite materials (CsPbI3) have been widely studied and applied to PSCs because of their excellent thermo-chemical stability and suitable bandgap. However, CsPbI3…
Intermediate-Phase-Modified Crystallization for Stable and Efficient CsPbI3 Perovskite Solar Cells.
- Materials Science, ChemistryACS applied materials & interfaces
- 2022
All-inorganic CsPbI3 perovskite solar cells (PSCs) are becoming desirable for their excellent photovoltaic ability and adjustable crystal structure distortion. However, the unsatisfactory…
3D Interaction of Zwitterions for Highly Stable and Efficient Inorganic CsPbI3 Solar Cells
- Materials Science, ChemistryAdvanced Functional Materials
- 2021
All‐inorganic cesium lead iodide (CsPbI3) perovskites, which replace volatile and hygroscopic organic components with stable inorganic cesium cations, have promising photoelectronic properties for…
Phase Control of Cs-Pb-Br Derivatives to Suppress 0D Cs4 PbBr6 for High-Efficiency and Stable All-Inorganic CsPbBr3 Perovskite Solar Cells.
- Materials ScienceSmall
- 2021
The preferred phase conversion from precursor to Cs-Pb-Br derivatives is revealed by theoretically calculating the Gibbs free energies of various phase conversion processes, allowing for a simplified multi-step solution-processable spin-coating method to hinder the formation of detrimental 0D Cs4 PbBr6 phase and enhance the photovoltaic performance of a PSC.
Water mediated synthesis of phase-stable red-emitting CsPbI3 nanocrystals
- Chemistry, Materials Science
- 2021
With the unusual luminescence and photoconductive characteristics, the CsPbI3 perovskite has attracted a lot of attention in the field of material synthesis and device fabrication. The general…
Size mismatch induces cation segregation in CsPbI3: Forming energy level gradient and 3D/2D heterojunction promotes the efficiency of carbon-based perovskite solar cells to over 15%
- Materials Science
- 2021
Tailored Lattice “Tape” to Confine Tensile Interface for 11.08%‐Efficiency All‐Inorganic CsPbBr3 Perovskite Solar Cell with an Ultrahigh Voltage of 1.702 V
- Materials ScienceAdvanced science
- 2021
A champion efficiency as high as 11.08% with an ultrahigh open‐circuit voltage up to 1.702 V is achieved on the best all‐inorganic CsPbBr3 PSC, which is so far the highest efficiency record for this kind of PSCs.
Stability of the CsPbI3 perovskite: from fundamentals to improvements
- Chemistry
- 2021
Over the past few years, we have witnessed the occurrence and progress of CsPbI3 semiconductor material as a superstar in the photovoltaic fields. By virtue of its excellent photoelectric properties,…
References
SHOWING 1-10 OF 45 REFERENCES
Vacancy-Driven Stabilization of the Cubic Perovskite Polymorph of CsPbI3
- Materials ScienceThe Journal of Physical Chemistry C
- 2019
The inorganic halide perovskite CsPbI3 has shown great promise for efficient solar cells, but the instability of its cubic phase remains a major challenge. We present a route for stabilizing the…
Thermodynamically stabilized β-CsPbI3–based perovskite solar cells with efficiencies >18%
- Materials Science, ChemistryScience
- 2019
High crystalline β-CsPbI3 films are obtained with an extended spectral response and enhanced phase stability and made from the treated material have highly reproducible and stable efficiencies reaching 18.4% under 45 ± 5°C ambient conditions.
Bication lead iodide 2D perovskite component to stabilize inorganic α-CsPbI3 perovskite phase for high-efficiency solar cells
- Materials Science, ChemistryScience Advances
- 2017
It is discovered that a small amount of two-dimensional EDAPbI4 perovskite containing the ethylenediamine (EDA) cation stabilizes the α-CsPbI3 to avoid the undesirable formation of the nonperovskites δ phase.
Intrinsic Point Defects in Inorganic Cesium Lead Iodide Perovskite CsPbI3
- Materials Science
- 2018
Cesium lead iodide (CsPbI3) has recently emerged as a promising solar photovoltaic absorber. However, the cubic perovskite (α-phase) remains stable only at high temperature and reverts to a…
Stabilizing the α-Phase of CsPbI3 Perovskite by Sulfobetaine Zwitterions in One-Step Spin-Coating Films
- Materials Science
- 2017
Reduced-Dimensional α-CsPbX3 Perovskites for Efficient and Stable Photovoltaics
- Materials ScienceJoule
- 2018
Surface passivation engineering strategy to fully-inorganic cubic CsPbI3 perovskites for high-performance solar cells
- Materials ScienceNature Communications
- 2018
Owing to inevitable thermal/moisture instability for organic–inorganic hybrid perovskites, pure inorganic perovskite cesium lead halides with both inherent stability and prominent photovoltaic…
The Role of Dimethylammonium Iodine in CsPbI3 Perovskite Fabrication: Additive or Dopant?
- Materials ScienceAngewandte Chemie
- 2019
This work demonstrated that the DMAI is an effective volatile additive to manipulate the crystallization process of CsPbI 3 inorganic perovskite films with different crystal phases and morphologies and confirmed the time-of-flight secondary ion mass spectrometry and nuclear magnetic resonance results confirmed the D MAI additive would not alloy into CsDMAI 3 perovksite 's crystal lattice.
Anharmonicity and Disorder in the Black Phases of Cesium Lead Iodide Used for Stable Inorganic Perovskite Solar Cells.
- Materials ScienceACS nano
- 2018
It is shown through high-resolution in situ synchrotron XRD measurements that CsPbI3 can be undercooled below its transition temperature and temporarily maintained in its perovskite structure down to room temperature, stabilizing a metastable perovkite polytype (black γ-phase) crucial for photovoltaic applications.
Bifunctional Stabilization of All-Inorganic α-CsPbI3 Perovskite for 17% Efficiency Photovoltaics.
- Materials ScienceJournal of the American Chemical Society
- 2018
This one-step bifunctional stabilization of perovskite through gradient halide doping and surface organic cation passivation presents a novel and promising strategy to design stable and high performance all-inorganic lead halide.