scholarly journals Using steric hindrance to manipulate and stabilize metal halide perovskites for optoelectronics

2021 ◽  
Author(s):  
Yanfeng Miao ◽  
Yuetian Chen ◽  
Haoran Chen ◽  
Xingtao Wang ◽  
Yixin Zhao
Keyword(s):  
Steric Hindrance ◽  
Film Formation ◽  
Metal Halide ◽  
Halide Perovskites ◽  
Kinetics Of

Manipulation on steric hindrance can influence the fundamental kinetics of perovskite crystallization and film formation, therefore stabilizing and passivating perovskite structures, and promoting the commercialization of stable perovskite devices.

scholarly journals Room-temperature film formation of metal halide perovskites on n-type metal oxides: the catalysis of ZnO on perovskite crystallization

2018 ◽  
Vol 54 (50) ◽  
pp. 6887-6890 ◽  
Author(s):  
Zhongcheng Yuan ◽  
Sai Bai ◽  
Zhibo Yan ◽  
Jun-Ming Liu ◽  
Feng Gao
Keyword(s):  
Metal Oxides ◽  
Thermal Annealing ◽  
Room Temperature ◽  
Crystallization Process ◽  
Film Formation ◽  
Metal Halide ◽  
Halide Perovskites

The ZnO/perovskite interface can efficiently catalyse the perovskite crystallization process even without thermal annealing.

scholarly journals Impact of Processing on Structural and Compositional Evolution in Mixed Metal Halide Perovskites during Film Formation

2020 ◽  
Vol 30 (38) ◽  
pp. 2001752 ◽  
Author(s):  
Maged Abdelsamie ◽  
Junwei Xu ◽  
Karsten Bruening ◽  
Christopher J. Tassone ◽  
Hans‐Georg Steinrück ◽  
...  
Keyword(s):  
Film Formation ◽  
Metal Halide ◽  
Mixed Metal ◽  
Compositional Evolution ◽  
Halide Perovskites

Lead-Free Metal Halide Perovskite Nanocrystals for Photocatalysis in Water

2019 ◽  
Author(s):  
Subhajit Bhattacharjee ◽  
Sonu Pratap Chaudhary ◽  
Sayan Bhattacharyya
Keyword(s):  
Charge Carrier ◽  
Wide Spectrum ◽  
Real Life ◽  
Metal Halide ◽  
Lead Free ◽  
Water Medium ◽  
Type I ◽  
Type Ii ◽  
Perovskite Layer ◽  
Halide Perovskites

<p>Metal halide perovskites with high absorption coefficient, direct generation of free charge carriers, excellent ambipolar charge carrier transport properties, point-defect tolerance, compositional versatility and solution processability are potentially transforming the photovoltaics and optoelectronics industries. However their limited ambient stability, particularly those of iodide perovskites, obscures their use as photocatalysts especially in aqueous medium. In an unprecedented approach we have exploited the photo-absorption property of the less toxic lead-free Cs<sub>3</sub>Bi<sub>2</sub>X<sub>9 </sub>(X = Br, I) nanocrystals (NCs) to catalyse the degradation of water pollutant organic dye, methylene blue (MB) in presence of visible light at room temperature. After providing a proof-of-concept with bromide perovskites in isopropanol, the perovskites are employed as photocatalysts in water medium by designing perovskite/Ag<sub>2</sub>S and perovskite/TiO<sub>2 </sub>composite systems, with Type I (or quasi Type II) and Type II alignments, respectively. Ag<sub>2</sub>S and TiO<sub>2</sub> coatings decelerate penetration of water into the perovskite layer while facilitating charge carrier extraction. With a minimal NC loading, Cs<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub>/Ag<sub>2</sub>S degrades ~90% MB within an hour. Our approach has the potential to unravel the photocatalytic properties of metal halide perovskites for a wide spectrum of real-life applications. </p>

Epitaxial Metal Halide Perovskites by InkJet Printing

2019 ◽  
Author(s):  
Mykhailo Sytnyk ◽  
Ole Lytken ◽  
Tim Freund ◽  
Wolfgang Heiss ◽  
Christina Harreiss ◽  
...  
Keyword(s):  
Inkjet Printing ◽  
Metal Halide ◽  
Halide Perovskites
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