Emissive Dark Excitons in Monoclinic Two-Dimensional Hybrid Lead Iodide Perovskites

A Shinde, PK Rajput, U Makhija, R Tanwar… - Nano Letters, 2023 - ACS Publications
Typically, bright excitons (XB) emit light in two-dimensional (2D) layered hybrid perovskites.
There are also dark excitons (XD), for which radiative recombination is spin-forbidden …

A two-dimensional lead-free hybrid perovskite semiconductor with reduced melting temperature

A Singh, E Crace, Y Xie, DB Mitzi - Chemical Communications, 2023 - pubs.rsc.org
1-Methylhexylammonium tin iodide yields the lowest reported melting temperature (Tm=
142° C) to date among lead-free hybrid perovskite semiconductors. Molecular branching …

Two-step crystallization for low-oxidation tin-based perovskite light-emitting diodes

YH Cheng, R Moriyama, H Ebe… - … applied materials & …, 2022 - ACS Publications
Metal halide perovskites attract significant attention because of their excellent optoelectronic
and semiconducting properties. However, there are environmental concerns related to the …

Suppressing the Formation of High n-Phase and 3D Perovskites in the Fabrication of Ruddlesden–Popper Perovskite Thin Films by Bulky Organic Cation …

R Vázquez-Cárdenas, J Rodríguez-Romero… - Chemistry of …, 2022 - ACS Publications
Two-dimensional perovskites (2D PVKs) were first studied because of their dielectric and
magnetic properties for dielectric and transistor applications in the electronic field. As the …

Polarization dependent exciton-plasmon coupling in PEA2PbI4/Al and its application to perovskite solar cell

Q Zhang, M Zhao, Y Li, A Bian, R El-Bashar… - Optics …, 2024 - opg.optica.org
This paper reports the strong coupling between Al nanostructure and two-dimensional (2D)
layered perovskite PEA_2PbI_4 (PEPI) films. The high exciton binding energy of 118 meV …

Dispersion of the third-order optical nonlinearities in 2D (PEA)2PbI4 perovskite film

Y He, X Li, J Li, J Huang, H Zhu, Y Feng, Q Yi, W Hu… - Optics …, 2023 - opg.optica.org
We report the wavelength-dependent third-order optical nonlinearity of two-dimensional
halide organic-inorganic perovskite (PEA) _2PbI_4 film experimentally. The high-quality two …

Machine learning assisted prediction of charge transfer properties in organic solar cells by using morphology-related descriptors

L Fu, H Hu, Q Zhu, L Zheng, Y Gu, Y Wen, H Ma, H Yin… - Nano Research, 2023 - Springer
Charge transfer and transport properties are crucial in the photophysical process of exciton
dissociation and recombination at the donor/acceptor (D/A) interface. Herein, machine …

Exciton dynamics in two-dimensional metal halide perovskite: The impact of film processing

S Bhandari, M Kundar, M Chakraborty… - The Journal of Chemical …, 2024 - pubs.aip.org
We investigate the hot carrier and exciton dynamics in two-dimensional (2D) metal halide
perovskites using time-resolved spectroscopy. 2D perovskite films were prepared with and …

Decoupling excitons behavior of two-dimensional Ruddlesden-Popper PEA2PbI4 nanosheets

W Li, S Yang, B Guo, X Fu, X Zeng, C Yan, J Cao… - Journal of Alloys and …, 2023 - Elsevier
Abstract Two-dimensional (2D) Ruddlesden-Popper hybrid organic-inorganic perovskites
are the most promising candidates for highly efficient optoelectronic devices due to their …

Temperature-Dependent Structural and Optoelectronic Properties of the Layered Perovskite 2-Thiophenemethylammonium Lead Iodide

J Deveikis, M Giza, D Walker, J Liu… - The Journal of …, 2024 - ACS Publications
Improved knowledge of the influence of temperature upon layered perovskites is essential to
enable perovskite-based devices to operate over a broad temperature range and to …