One-step method for the fabrication of high-quality perovskite thin-films under ambient conditions: Stability, morphological, optical, and electrical evaluation

Mixed cationic lead perovskites containing formamidinium and methylammonium can be stabilized by incorporating ZnI2 as an “internal desiccant”. Next to prolonged stability under ambient conditions we show with XRD that the use of an additive, 3-chloropropyl ammonium chloride, influences crystal formation by orienting the crystals. These ~500 nm crystals show individual photoluminescent behavior in thin films and have a longer photoluminescence lifetime at the grain boundaries as compared to the center of the crystal or relative to un-doped materials without the additive made under identical conditions. Charges recombine slower at the edges of the crystals as observed with confocal laser scanning microscopy

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Ruthenium-Catalyzed Synthesis of Pyrrolo[1,2-a]quinoxaline Derivatives from 1-(2-Aminophenyl)pyrroles and Sulfoxonium Ylides

Synlett ◽

10.1055/s-0040-1707119 ◽

2020 ◽

Vol 31 (12) ◽

pp. 1205-1210 ◽

Cited By ~ 1

Author(s):

Guo-Sheng Huang ◽

Xin-Feng Cui ◽

Fang-Peng Hu ◽

Xiao-Qiang Zhou ◽

Zhen-Zhen Zhan

Keyword(s):

Reaction Time ◽

Functional Group ◽

Reaction Pathway ◽

Ambient Conditions ◽

Step Method ◽

Short Reaction Time ◽

Quinoxaline Derivatives ◽

One Step ◽

Preliminary Study ◽

Mechanism Of The Reaction

A ruthenium-catalyzed [5+1] annulation of 1-(2-aminophenyl)pyrroles with α-carbonyl sulfoxonium ylides is reported. This reaction provides a one-step method for synthesizing pyrrolo[1,2-a]quinoxaline derivatives under ambient conditions. The system proceeds with a short reaction time and a high functional-group tolerance. Notably, this divergent protocol tolerates β-keto sulfoxonium ylides and can be applied to α-ester sulfoxonium ylides. A preliminary study was made of the mechanism of the reaction, and a reaction pathway is proposed.

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Allylamine PECVD Modification of PDMS as Simple Method to Obtain Conductive Flexible Polypyrrole Thin Films

Polymers ◽

10.3390/polym11122108 ◽

2019 ◽

Vol 11 (12) ◽

pp. 2108

Author(s):

Robert Texidó ◽

Salvador Borrós

Keyword(s):

Thin Films ◽

Step Method ◽

Great Stability ◽

Simple Method ◽

Pdms Surface ◽

Polymeric Chains ◽

Plasma Grafting ◽

One Step ◽

Different Shapes ◽

Amine Groups

In this paper, we report a one-step method to obtain conductive polypyrrole thin films on flexible substrates. To do this, substrates were modified through allylamine plasma grafting to create a high amount of reactive amine groups on PDMS surface. These groups are used during polypyrrole particle synthesis as anchoring points to immobilize the polymeric chains on the substrate during polymerization. Surface morphology of polypyrrole thin films are modified, tailoring the polyelectrolyte used in the polypyrrole synthesis obtaining different shapes of nanoparticles that conform to the film. Depending on the polyelectrolyte molecular weight, the shape of polypyrrole particles go from globular (500 nm diameter) to a more constructed and elongated shape. The films obtained with this methodology reflected great stability under simple bending as well as good conductivity values (between 2.2 ± 0.7 S/m to 5.6 ± 0.2 S/cm).

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A facile one-step method to reduce surface impurities in solution-processed CuInS2 nanocrystal solar cells

Journal of Materials Chemistry A ◽

10.1039/c5ta04031k ◽

2015 ◽

Vol 3 (27) ◽

pp. 14116-14120 ◽

Cited By ~ 6

Author(s):

Melissa S. Stahl ◽

Hamed Azimi ◽

Christoph J. Brabec

Keyword(s):

Thin Films ◽

Solar Cells ◽

Post Processing ◽

Step Method ◽

Simple Method ◽

Solution Processed ◽

One Step

This work presents a simple method for post-processing of washing away the impurities formed on the films of solution processed CuInS2 thin films.

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Fabrication of [CH(NH2)2]0.8Cs0.2PbI3 Perovskite Thin Films for n-i-p Planar-structure Solar Cells by a One-step Method Using 1-Cyclohexyl-2-pyrrolidone as an Additive

Chemistry Letters ◽

10.1246/cl.180216 ◽

2018 ◽

Vol 47 (7) ◽

pp. 905-908 ◽

Cited By ~ 4

Author(s):

Ryo Ishikawa ◽

Keiji Ueno ◽

Hajime Shirai

Keyword(s):

Thin Films ◽

Solar Cells ◽

Planar Structure ◽

Step Method ◽

One Step

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A simple one-step method with wide processing window for high-quality perovskite mini-module fabrication

Joule ◽

10.1016/j.joule.2021.02.012 ◽

2021 ◽

Author(s):

Hsin-Hsiang Huang ◽

Qi-Han Liu ◽

Hsinhan Tsai ◽

Shreetu Shrestha ◽

Li-Yun Su ◽

...

Keyword(s):

Step Method ◽

High Quality ◽

Processing Window ◽

One Step

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Enhanced Grain-boundary Emission Lifetime and Additive Induced Crystal Orientation in One-Step Spin-Coated Mixed Cationic (FA/MA) Lead Perovskite Thin Films Stabilized by Zinc Iodide Doping

10.26434/chemrxiv.5484073.v2 ◽

2017 ◽

Cited By ~ 1

Author(s):

Loreta A. Muscarella ◽

Dina Petrova ◽

Rebecca Jorge Cervasio ◽

Aram Farawar ◽

Olivier Lugier ◽

...

Keyword(s):

Thin Films ◽

Laser Scanning ◽

Laser Scanning Microscopy ◽

Confocal Laser ◽

Crystal Formation ◽

Ambient Conditions ◽

Emission Lifetime ◽

Photoluminescence Lifetime ◽

One Step ◽

Zinc Iodide

Mixed cationic lead perovskites containing formamidinium and methylammonium can be stabilized by incorporating ZnI2 as an “internal desiccant”. Next to prolonged stability under ambient conditions we show with XRD that the use of an additive, 3-chloropropyl ammonium chloride, influences crystal formation by orienting the crystals. These ~500 nm crystals show individual photoluminescent behavior in thin films and have a longer photoluminescence lifetime at the grain boundaries as compared to the center of the crystal or relative to un-doped materials without the additive made under identical conditions. Charges recombine slower at the edges of the crystals as observed with confocal laser scanning microscopy. The material can also be prepared as a black precursor powder by a solid-solid reaction under ambient conditions.

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Enhanced Grain-boundary Emission Lifetime and Additive Induced Crystal Orientation in One-Step Spin-Coated Mixed Cationic (FA/MA) Lead Perovskite Thin Films Stabilized by Zinc Iodide Doping

10.26434/chemrxiv.5484073 ◽

2017 ◽

Author(s):

Loreta A. Muscarella ◽

Dina Petrova ◽

Rebecca Jorge Cervasio ◽

Aram Farawar ◽

Olivier Lugier ◽

...

Keyword(s):

Thin Films ◽

Laser Scanning ◽

Laser Scanning Microscopy ◽

Confocal Laser ◽

Crystal Formation ◽

Ambient Conditions ◽

Emission Lifetime ◽

Photoluminescence Lifetime ◽

One Step ◽

Zinc Iodide

Mixed cationic lead perovskites containing formamidinium and methylammonium can be stabilized by incorporating ZnI2 as an “internal desiccant”. Next to prolonged stability under ambient conditions we show with XRD that the use of an additive, 3-chloropropyl ammonium chloride, influences crystal formation by orienting the crystals. These ~500 nm crystals show individual photoluminescent behavior in thin films and have a longer photoluminescence lifetime at the grain boundaries as compared to the center of the crystal or relative to un-doped materials without the additive made under identical conditions. Charges recombine slower at the edges of the crystals as observed with confocal laser scanning microscopy. The material can also be prepared as a black precursor powder by a solid-solid reaction under ambient conditions.

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