The effect of dimensionality on the charge carrier mobility of halide perovskites

2021 ◽  
Author(s):  
Naveen K Tailor ◽  
Yukta . ◽  
Rahul Ranjan ◽  
Sudhir Ranjan ◽  
Tejasvini Sharma ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Metal Halide ◽  
Photovoltaic Application ◽  
Halide Perovskites ◽  
Large Charge

Metal halide perovskites (MHPs) have recently emerged as an ideal semiconductor for photovoltaic application. Much of the advantageous properties of perovskite is dominated by its large charge carrier mobility (μ)...

scholarly journals Revealing Charge Carrier Mobility and Defect Densities in Metal Halide Perovskites via Space-Charge-Limited Current Measurements

2021 ◽  
Vol 6 (3) ◽  
pp. 1087-1094 ◽  
Author(s):  
Vincent M. Le Corre ◽  
Elisabeth A. Duijnstee ◽  
Omar El Tambouli ◽  
James M. Ball ◽  
Henry J. Snaith ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Space Charge ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Metal Halide ◽  
Space Charge Limited Current ◽  
Limited Current ◽  
Halide Perovskites ◽  
Defect Densities ◽  
Space Charge Limited

scholarly journals Charge carrier mobility in hybrid halide perovskites

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Carlo Motta ◽  
Fedwa El-Mellouhi ◽  
Stefano Sanvito
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Halide Perovskites

Impact of the polar optical phonon and alloy scattering on the charge-carrier mobilities of FA0.83Cs0.17Pb(I1-xBrx)3 hybrid perovskites

2021 ◽  
Author(s):  
Anusit Thongnum ◽  
Ratchanok Pingaew ◽  
Udomsilp Pinsook
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Optical Phonon ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Polar Optical Phonon ◽  
Tandem Solar Cells ◽  
Alloy Scattering ◽  
Silicon Technology ◽  
Halide Perovskites

Lead mixed-halide perovskites are promising absorption materials that are suitable for applications in tandem solar cells using existing silicon technology. Charge-carrier mobility is an important factor that affects the performance...

scholarly journals Elucidating the long-range charge carrier mobility in metal halide perovskite thin films

2019 ◽  
Vol 12 (1) ◽  
pp. 169-176 ◽  
Author(s):  
Jongchul Lim ◽  
Maximilian T. Hörantner ◽  
Nobuya Sakai ◽  
James M. Ball ◽  
Suhas Mahesh ◽  
...  
Keyword(s):  
Thin Films ◽  
Charge Carrier ◽  
Long Range ◽  
Carrier Mobility ◽  
Accurate Determination ◽  
Charge Carrier Mobility ◽  
Metal Halide ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

A new optoelectronic technique which enables the accurate determination of the long-range lateral charge carrier mobility of metal halide perovskite films.

scholarly journals The effect of structural dimensionality on carrier mobility in lead-halide perovskites

2019 ◽  
Vol 7 (41) ◽  
pp. 23949-23957 ◽  
Author(s):  
Noor Titan Putri Hartono ◽  
Shijing Sun ◽  
María C. Gélvez-Rueda ◽  
Polly J. Pierone ◽  
Matthew P. Erodici ◽  
...  
Keyword(s):  
Solar Cell ◽  
Charge Carrier ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Structural Dimensionality ◽  
Halide Perovskites ◽  
A Site ◽  
Lead Halide

Changes in perovskite structural dimensionality brought by mixing A-site cations play an important role in determining the measured charge carrier mobility, and in the solar cell performance.

The Influence of Nitrogen Position on Charge Carrier Mobility in Enantiopure Aza[6]helicene Crystals

2018 ◽  
Author(s):  
Francesco Salerno ◽  
Beth Rice ◽  
Julia Schmidt ◽  
Matthew J. Fuchter ◽  
Jenny Nelson ◽  
...  
Keyword(s):  
Solid State ◽  
Charge Carrier ◽  
Carrier Mobility ◽  
Chemical Structure ◽  
Crystal Packing ◽  
Charge Carrier Mobility ◽  
Individual Factor ◽  
Charge Mobility ◽  
Order Of Magnitude ◽  
Small Change

<p>The properties of an organic semiconductor are dependent on both the chemical structure of the molecule involved, and how it is arranged in the solid-state. It is challenging to extract the influence of each individual factor, as small changes in the molecular structure often dramatically change the crystal packing and hence solid-state structure. Here, we use calculations to explore the influence of the nitrogen position on the charge mobility of a chiral organic molecule when the crystal packing is kept constant. The transfer integrals for a series of enantiopure aza[6]helicene crystals sharing the same packing were analysed in order to identify the best supramolecular motifs to promote charge carrier mobility. The regioisomers considered differ only in the positioning of the nitrogen atom in the aromatic scaffold. The simulations showed that even this small change in the chemical structure has a strong effect on the charge transport in the crystal, leading to differences in charge mobility of up to one order of magnitude. Some aza[6]helicene isomers that were packed interlocked with each other showed high HOMO-HOMO integrals (up to 70 meV), whilst molecules arranged with translational symmetry generally afforded the highest LUMO-LUMO integrals (40 - 70 meV). As many of the results are not intuitively obvious, a computational approach provides additional insight into the design of new semiconducting organic materials.</p>

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>

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