Journal ArticleDOI
Tuning the Circular Dichroism and Circular Polarized Luminescence Intensities of Chiral 2D Hybrid Organic-Inorganic Perovskites through Halogenation of the Organic Ions
Jin-Tai Lin,Deng-Gao Chen,Lan Sheng Yang,Tai Chun Lin,Yi-Hung Liu,Yu Chiang Chao,Pi-Tai Chou,Ching-Wen Chiu +7 more
TLDR
In this article, the effects of chiral molecules on the chiroptical properties of hybrid organic-inorganic perovskites (HOIPs) were investigated, and the HOIP having a Cl-substituted chiral cation exhibits the highest circular dichroism and circular polarized luminescence (CPL) intensities, indicating the existence of the largest rotatory strength.Abstract:
Through the incorporation of various halogen-substituted chiral organic cations, the effects of chiral molecules on the chiroptical properties of hybrid organic-inorganic perovskites (HOIPs) are investigated. Among them, the HOIP having a Cl-substituted chiral cation exhibits the highest circular dichroism (CD) and circular polarized luminescence (CPL) intensities, indicating the existence of the largest rotatory strength, whereas the F-substituted HIOP shows the weakest intensities. The observed modulation can be correlated to the varied magnetic transition dipole of HOIPs, which is sensitive to the d-spacing between inorganic layers and the halogen-halogen interaction between organic cations and the inorganic sheets. These counteracting effects meet the optimal CD and CPL intensity with chlorine substitution, rendering the rotatory strength of HOIPs arranged in the order of (ClMBA)2 PbI4 >(BrMBA)2 PbI4 >(IMBA)2 PbI4 >(MBA)2 PbI4 >(FMBA)2 PbI4 .read more
Citations
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Journal ArticleDOI
Circular Polarized Light Emission in Chiral Inorganic Nanomaterials.
TL;DR: These findings are expected to guide development of CPLE materials in a variety of technological fields, including 3D displays, information storage, biosensors, optical spintronics, and biological probes.
Journal ArticleDOI
Regulating Optical Activity and Anisotropic Second-Harmonic Generation in Zero-Dimensional Hybrid Copper Halides.
TL;DR: This work provides insights into regulating the optical activity and anisotropic SHG effect of lead-free chiral HMHs and confirms the feasibility of SHG-CD spectroscopy as a promising tool for characterizing the intrinsic optical activity of chiral materials.
Journal ArticleDOI
Control of light, spin and charge with chiral metal halide semiconductors
Journal ArticleDOI
Spin selectivity in chiral metal-halide semiconductors
TL;DR: In this paper, the chemical and structural diversity of chiral metal-halide semiconductors (MHS) was discussed, highlighting the chirality formation mechanism and the spin selectivity in chiral MHS.
Journal ArticleDOI
A chiral lead-free tin(IV)-based halide organic-inorganic semiconductor with dielectric switching and phase transition
TL;DR: In this article , a chiral lead-free tin-IV-based OIMHS (R)-3-hydroxyquinuclidinium]2SnCl6 ([R-HQ]2snCl6) was synthesized, which exhibits a wide band gap of about 4.11 eV.
References
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Journal ArticleDOI
Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber.
Samuel D. Stranks,Giles E. Eperon,Giulia Grancini,Christopher Menelaou,Marcelo J. P. Alcocer,Tomas Leijtens,Laura M. Herz,Annamaria Petrozza,Henry J. Snaith +8 more
TL;DR: In this article, transient absorption and photoluminescence-quenching measurements were performed to determine the electron-hole diffusion lengths, diffusion constants, and lifetimes in mixed halide and triiodide perovskite absorbers.
Journal ArticleDOI
The emergence of perovskite solar cells
TL;DR: In this article, a review describes the rapid progress that has been made in hybrid organic-inorganic perovskite solar cells and their applications in the photovoltaic sector.
Journal ArticleDOI
Bright light-emitting diodes based on organometal halide perovskite
Zhi-Kuang Tan,Reza Saberi Moghaddam,May Ling Lai,Pablo Docampo,Ruben Higler,Felix Deschler,Michael Price,Aditya Sadhanala,Luis M. Pazos,Dan Credgington,Fabian C. Hanusch,Thomas Bein,Henry J. Snaith,Richard H. Friend +13 more
TL;DR: It is shown, using photoluminescence studies, that radiative bimolecular recombination is dominant at higher excitation densities, Hence, the quantum efficiencies of the perovskite light-emitting diodes increase at higher current densities.
Journal ArticleDOI
Quantum Dot Light-Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX3)
TL;DR: The demonstration of these novel quantum-dot light-emitting diodes based on all-inorganic perovskite CsPbX3 (X = Cl, Br, I) nanocrystals opens a new avenue toward designing optoelectronic devices, such as displays, photodetectors, solar cells, and lasers.
Journal ArticleDOI
Optical Response of High-Dielectric-Constant Perovskite-Related Oxide
TL;DR: Optical conductivity measurements on the perovskite-related oxide CaCu3Ti4O12 provide a hint of the physics underlying the observed giant dielectric effect in this material, suggesting the presence of a strong absorption at very low frequencies due to dipole relaxation.