Solvent vapour annealing of methylammonium lead halide perovskite: what's the catch?

Solvent vapour annealing of hybrid perovskite films leads to stoichiometric changes, which adversely affect the photovoltaic device stability. This can be partially mitigated by incorporation of excess organic halide into the precursor solution.

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Structural and optical properties of metal-organic halide perovskite thin films for varying methylammonium chloride and iodide concentrations in the precursor solution

Thin Solid Films ◽

10.1016/j.tsf.2020.138067 ◽

2020 ◽

Vol 707 ◽

pp. 138067

Author(s):

Isaac Montes-Valenzuela ◽

Arturo Morales-Acevedo

Keyword(s):

Thin Films ◽

Optical Properties ◽

Precursor Solution ◽

Structural And Optical Properties ◽

Organic Halide ◽

Methylammonium Chloride ◽

Metal Organic ◽

Halide Perovskite

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Tailoring nucleation and grain growth by changing the precursor phase ratio for efficient organic lead halide perovskite optoelectronic devices

Journal of Materials Chemistry C ◽

10.1039/c7tc02928d ◽

2017 ◽

Vol 5 (39) ◽

pp. 10114-10121 ◽

Cited By ~ 11

Author(s):

Swaminathan Venkatesan ◽

Mehedhi Hasan ◽

Junyoung Kim ◽

Nader R. Rady ◽

Sandeep Sohal ◽

...

Keyword(s):

Grain Growth ◽

Optoelectronic Devices ◽

Nucleation And Growth ◽

Molar Ratio ◽

Inorganic Hybrid ◽

Hybrid Perovskite ◽

Precursor Phase ◽

Organic Lead ◽

Halide Perovskite ◽

Lead Halide

The nucleation and growth of organic–inorganic hybrid perovskite films induced by the molar ratio of precursor components and their role in optoelectronic performance are investigated.

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Effect of intermediate phases on the optical properties of PbI2-rich CH3NH3PbI3 organic–inorganic hybrid perovskite

Physical Chemistry Chemical Physics ◽

10.1039/c8cp06916f ◽

2019 ◽

Vol 21 (9) ◽

pp. 5253-5261 ◽

Cited By ~ 3

Author(s):

Alonso W. P. Sanches ◽

Marco A. T. da Silva ◽

Neusmar J. A. Cordeiro ◽

Alexandre Urbano ◽

Sidney A. Lourenço

Keyword(s):

Optical Properties ◽

Spin Coating ◽

Inorganic Hybrid ◽

Spin Coating Method ◽

Intermediate Phases ◽

Hybrid Perovskite ◽

Coating Method ◽

Halide Perovskite ◽

Lead Halide

Intermediate phases in the methylammonium lead halide perovskite (CH3NH3PbI3) films produced by the two-step spin coating method.

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Photodecomposition and thermal decomposition in methylammonium halide lead perovskites and inferred design principles to increase photovoltaic device stability

Journal of Materials Chemistry A ◽

10.1039/c8ta03501f ◽

2018 ◽

Vol 6 (20) ◽

pp. 9604-9612 ◽

Cited By ~ 151

Author(s):

Emilio J. Juarez-Perez ◽

Luis K. Ono ◽

Maki Maeda ◽

Yan Jiang ◽

Zafer Hawash ◽

...

Keyword(s):

Thermal Decomposition ◽

Solar Cells ◽

Thermal Degradation ◽

Perovskite Solar Cells ◽

Design Principles ◽

Photovoltaic Device ◽

Operational Stability ◽

Degradation Processes ◽

Device Stability ◽

Hybrid Perovskite

Strategies of how to mitigate photodegradation and thermal degradation processes are proposed in this work in order to further improve operational stability in hybrid perovskite solar cells.

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A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽

10.1039/c9nr07377a ◽

2019 ◽

Vol 11 (45) ◽

pp. 21824-21833 ◽

Cited By ~ 9

Author(s):

Jyoti V. Patil ◽

Sawanta S. Mali ◽

Chang Kook Hong

Keyword(s):

Thin Films ◽

Grain Size ◽

Solar Cells ◽

Power Conversion Efficiency ◽

Conversion Efficiency ◽

Power Conversion ◽

Perovskite Solar Cells ◽

Inorganic Perovskite ◽

Halide Perovskite ◽

Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

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Hollow Metal Halide Perovskite Nanocrystals with Efficient Blue Emissions

10.26434/chemrxiv.9636824.v1 ◽

2019 ◽

Author(s):

Michael Worku ◽

Yu Tian ◽

Chenkun Zhou ◽

Haoran Lin ◽

Maya Chaaban ◽

...

Keyword(s):

Precursor Solution ◽

Visible Spectral Region ◽

Metal Halide ◽

Synthetic Control ◽

Perovskite Nanocrystals ◽

Highly Efficient ◽

Quantum Confinement Effects ◽

Metal Halide Perovskite ◽

Lead Bromide ◽

Halide Perovskite

Metal halide perovskite nanocrystals (NCs) have emerged as a new generation light emitting materials with narrow emissions and high photoluminescence quantum efficiencies (PLQEs). Various types of perovskite NCs, e.g. platelets, wires, and cubes, have been discovered to exhibit tunable emissions across the whole visible spectral region. Despite remarkable advances in the field of metal halide perovskite NCs over the last few years, many nanostructures in inorganic NCs have yet been realized in metal halide perovskites and producing highly efficient blue emitting perovskite NCs remains challenging and of great interest. Here we report for the first time the discovery of highly efficient blue emitting cesium lead bromide perovskite (CsPbBr3) NCs with hollow structures. By facile solution processing of cesium lead bromide perovskite precursor solution containing additional ethylenediammonium bromide and sodium bromide, in-situ formation of hollow CsPbBr3 NCs with controlled particle and pore sizes is realized. Synthetic control of hollow nanostructures with quantum confinement effects results in color tuning of CsPbBr3 NCs from green to blue with high PLQEs of up to 81 %.<br><div><br></div>

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