The ferroelectric–ferroelastic debate about metal halide perovskites

F Ambrosio, F De Angelis, AR Goñi - The journal of physical …, 2022 - ACS Publications
Metal halide perovskites (MHPs) are solution-processed materials with exceptional
photoconversion efficiencies that have brought a paradigm shift in photovoltaics. The nature …

Photoprotection in metal halide perovskites by ionic defect formation

N Phung, A Mattoni, JA Smith, D Skroblin, H Köbler… - Joule, 2022 - cell.com
Photostability is critical for long-term solar cell operation. While light-triggered defects are
usually reported as evidence of material degradation, we reveal that the formation of certain …

Dynamic local structure in caesium lead iodide: spatial correlation and transient domains

WJ Baldwin, X Liang, J Klarbring, M Dubajic… - Small, 2024 - Wiley Online Library
Metal halide perovskites are multifunctional semiconductors with tunable structures and
properties. They are highly dynamic crystals with complex octahedral tilting patterns and …

Nonlocal screening dictates the radiative lifetimes of excitations in lead halide perovskites

Y Park, A Obliger, DT Limmer - Nano Letters, 2022 - ACS Publications
We use path integral molecular dynamics simulations and theory to elucidate the
interactions between charge carriers, as mediated by a lead halide perovskite lattice. We …

Origin of Ultralow Thermal Conductivity in Metal Halide Perovskites

S Thakur, A Giri - ACS Applied Materials & Interfaces, 2023 - ACS Publications
Resulting from their remarkable structure–property relationships, metal halide perovskites
have garnered tremendous attention in recent years for a plethora of applications. For …

Atomistic modeling of extreme near-field heat transport across nanogaps between two polar dielectric materials

Y Guo, M Gómez Viloria, R Messina, P Ben-Abdallah… - Physical Review B, 2023 - APS
The understanding of extreme near-field heat transport across vacuum nanogaps between
polar dielectric materials remains an open question. In this work, we present an investigation …

Molecular Rotor–Rotor Heat Diffusion at the Origin of the Enhanced Thermal Conductivity of Hybrid Perovskites at High Temperatures

A Giri, S Thakur, A Mattoni - Chemistry of Materials, 2022 - ACS Publications
We demonstrate a new regime of heat conduction in hybrid metal halide perovskites where
the thermal conductivity increases with temperature due to the rotational and librational …

Tailoring the thermal conductivity of two-dimensional metal halide perovskites

S Thakur, Z Dai, P Karna, NP Padture, A Giri - Materials Horizons, 2022 - pubs.rsc.org
Proper thermal management of solar cells based on metal halide perovskites (MHPs) is key
to increasing their efficiency as well as their durability. Although two-dimensional (2D) MHPs …

Mechanism of Hot‐Carrier Photoluminescence in Sn‐Based Perovskites

EK Tekelenburg, FVA Camargo, A Filippetti… - Advanced …, 2024 - Wiley Online Library
Metal halide perovskites have shown exceptionally slow hot‐carrier cooling, which has been
attributed to various physical mechanisms without reaching a consensus. Here, experiment …

Nonlinear ion mobility at high electric field strengths in the perovskites and

D Kemp, RA De Souza - Physical Review Materials, 2021 - APS
As the characteristic dimensions of perovskite devices shrink to the nanoscale, operating
voltages of a few volts lead to huge field strengths and, consequently, to the possibility of …