Microscopic observation of wavelike charge-carriers propagation in organic-inorganic metal-halide perovskites (Conference Presentation)

Properties of Excitons and Photogenerated Charge Carriers in Metal Halide Perovskites

Advanced Materials ◽

10.1002/adma.201806671 ◽

2019 ◽

Vol 31 (47) ◽

pp. 1806671 ◽

Cited By ~ 34

Author(s):

Ying Jiang ◽

Xiao Wang ◽

Anlian Pan

Keyword(s):

Metal Halide ◽

Charge Carriers ◽

Halide Perovskites

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Photoinduced Dynamics of Charge Carriers in Metal Halide Perovskites from an Atomistic Perspective

The Journal of Physical Chemistry Letters ◽

10.1021/acs.jpclett.0c01687 ◽

2020 ◽

Vol 11 (17) ◽

pp. 7066-7082

Author(s):

Lu Qiao ◽

Wei-Hai Fang ◽

Run Long ◽

Oleg V. Prezhdo

Keyword(s):

Metal Halide ◽

Charge Carriers ◽

Halide Perovskites

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Hot carrier solar cells and the potential of perovskites for breaking the Shockley–Queisser limit

Journal of Materials Chemistry C ◽

10.1039/c8tc04641g ◽

2019 ◽

Vol 7 (9) ◽

pp. 2471-2486 ◽

Cited By ~ 30

Author(s):

Simon Kahmann ◽

Maria A. Loi

Keyword(s):

Solar Cells ◽

Metal Halide ◽

Charge Carriers ◽

Hot Carrier ◽

Halide Perovskites

We review the cooling of charge carriers in metal halide perovskites for the use in hot carrier solar cells.

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Ab initio nonadiabatic molecular dynamics of charge carriers in metal halide perovskites

Nanoscale ◽

10.1039/d1nr01990b ◽

2021 ◽

Author(s):

Wei Li ◽

Yalan She ◽

Andrey S. Vasenko ◽

Oleg V. Prezhdo

Keyword(s):

Molecular Dynamics ◽

Time Domain ◽

Quantum Dynamics ◽

Density Functional ◽

Metal Halide ◽

Charge Carriers ◽

Functional Theory ◽

Nonadiabatic Molecular Dynamics ◽

Halide Perovskites ◽

Molecular Semiconductors

Atomistic details govern quantum dynamics of charge carriers in metal halide perovskites, which exhibit properties of solid state and molecular semiconductors, as revealed by time-domain density functional theory and nonadiabatic molecular dynamics.

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Lead-Free Metal Halide Perovskite Nanocrystals for Photocatalysis in Water

10.26434/chemrxiv.9794270 ◽

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

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 Cs3Bi2X9 (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/Ag2S and perovskite/TiO2 composite systems, with Type I (or quasi Type II) and Type II alignments, respectively. Ag2S and TiO2 coatings decelerate penetration of water into the perovskite layer while facilitating charge carrier extraction. With a minimal NC loading, Cs3Bi2I9/Ag2S 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.

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