Spin Texture Sensitive Photodetection by Dion–Jacobson Tin Halide Perovskites

Mandal, Arnab; Khuntia, Sanuja Kumar; Mondal, Debayan; Mahadevan, Priya; Bhattacharyya, Sayan

doi:10.1021/jacs.3c10195

Cited by 3 publications

(2 citation statements)

References 103 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interlayer spacings of (IPA) 2 PbBr 4 , (IBA) 2 PbBr 4 , and (IAA) 2 PbBr 4 are 5.797, 7.734, and 10.473 Å, respectively (Scheme ). We know that the configuration of interlayer cations has an undeniable impact on the degree of distortion of the inorganic framework and the structure/property of the entire compound. − For example, Yaffe and co-workers studied the effect of the organic cations on the structural dynamics of the inorganic scaffold . Zhou et al compared the photovoltaic performance of 2D OIHPs constructed with different configurations of interlayer cations .…”

Section: Resultsmentioning

confidence: 99%

Room-Temperature Photoferroelectrics Semiconductor Driven by the Interlayer Confinement Effect

He,

Chen,

et al. 2024

Chem. Mater.

View full text Add to dashboard Cite

With the assistance of the ferroelectrochemistry theory, many multifunctional organic−inorganic hybrid perovskites (OIHPs) ferroelectrics have been designed and studied. However, research on regulating ferroelectrics through the interlayer confinement effect in two-dimensional (2D) OIHPs is still rare. Herein, we regulated the strength of interlayer confinement by changing the length of the alkyl chain on organic cations, and precisely constructed a lead bromide ferroelectric (IPA) 2 PbBr 4 (IPA + is isopropylammonium) with a high Curie temperature (T c ) of 340.5 K and a spontaneous polarization (P s ) of 3.16 μC/cm 2 through a strong interlayer confinement effect. Compared with (IPA) 2 PbBr 4 (T p = 370.5 K), (IBA) 2 PbBr 4 (IBA + is isobutylammonium, T p = 315 K) and (IAA) 2 PbBr 4 (IAA + is isoamylammonium, T p = 271 K) crystallized in the centrosymmetric space group P2 1 /c, Cmca at room temperature (RT), respectively, while also having a lower phase transition temperature (T p ). More importantly, the gradual decrease in interlayer spacing from 10.47 Å in (IAA) 2 PbBr 4 , 7.73 Å in (IBA) 2 PbBr 4 to 5.79 Å in (IPA) 2 PbBr 4 enhances the interlayer confinement effect, leading to IBA + and IAA + cations in a disordered state at RT, while the IPA + cation can be arranged in an orderly and directional manner. Due to the differences in cations configuration, the impacts on the degree of distortion of inorganic skeleton and PbBr 6 octahedra are also different, ultimately reflected in the crystal structure. In short, the directional arrangement and order−disorder phase transition of IPA + cations induce the ferroelectricity of (IPA) 2 PbBr 4 through the strong confinement effect of the inorganic skeleton. Additionally, a single crystal device based on (IPA) 2 PbBr 4 was assembled, which exhibits a lower X-ray detection limit of 102 nGy/s in the selfdriven mode. This work provides an effective strategy for designing high-temperature photoferroelectrics semiconductors.

show abstract

Section: Resultsmentioning

confidence: 99%

Room-Temperature Photoferroelectrics Semiconductor Driven by the Interlayer Confinement Effect

He,

Chen,

et al. 2024

Chem. Mater.

View full text Add to dashboard Cite

show abstract

“…Organic–inorganic metal halide perovskites are excellent optoelectronic materials. − Among them, 2D layered perovskites can have limitless combinations of various organic cations and anionic inorganic layers, yielding novel functionalities along with structural diversity. − Typical A 2 PbBr 4 2D perovskites have an A-site as organic ammonium cations like n -butyl ammonium (C 4 H 9 NH 3 + ), as shown in Figure a. Recently, a new kind of hybrid A-site cation layer [(4AMTP)PbBr 2 ] 2 2+ was reported, where the organic 4AMTP (4-aminomethyltetrahydropyran cation) is covalently bound to an inorganic PbBr 2 type lattice (Figure b). − The 2D layered perovskite formed by using the hybrid A-site cation is [(4AMTP)PbBr 2 ] 2 PbBr 4 , as shown in Figure c.…”

Section: Introductionmentioning

confidence: 99%

Thermal Evolution of the Structure and Luminescence of the Hybrid-Cation-Stabilized [(4AMTP)PbBr₂]₂PbBr₄ Layered Perovskite

Shingote,

Dutta,

Rajput

et al. 2024

Chem. Mater.

View full text Add to dashboard Cite

A typical layered hybrid perovskite, A 2 PbBr 4 , consists of organic Asite cations and the inorganic [PbBr 4 ] 2− perovskite layers. Alternatively, here the Asite cation itself is a hybrid one, namely, [(4AMTP)PbBr 2 ] 2 2+ , containing a nonperovskite PbBr 2 type lattice and 4AMTP (4-aminomethyltetrahydropyran cation). How does this hybrid A-site cation influence the structure and luminescence of a [(4AMTP)PbBr 2 ] 2 PbBr 4 2D layered perovskite? Here, we address this question by exploring crystal structure and photoluminescence (PL) in the temperature range 7−300 K. Centimeter-sized single crystals of [(4AMTP)-PbBr 2 ] 2 PbBr 4 show a stable monoclinic P2 1 /c space group in the entire temperature range, without showing any phase transition. The absence of a phase transition signifies higher structural rigidity brought in by the hybrid A-site cation, unlike typical A 2 PbBr 4 with organic A-site cations that often exhibit a phase transition in this temperature range. PL of [(4AMTP)PbBr 2 ] 2 PbBr 4 at room temperature shows excitonic emissions similar to a typical A 2 PbBr 4 with an organic A-cation because neither hybrid nor organic A-site cations contribute to the valence and conduction band edges. Interestingly, below 70 K, the excitonic emission suddenly red-shifts by 15 meV from 3.017 to 3.002 eV, along with an order of magnitude increase in lifetime. Similar temperature-induced PL changes in monoclinic-phase layered perovskites were previously attributed to spin-forbidden "dark" exciton emissions, which become significant at lower temperatures. The hybrid A-site cation in [(4AMTP)PbBr 2 ] 2 PbBr 4 stabilizes its monoclinic phase, influencing its luminescence characteristics. The hybrid A-site cations offer exciting prospects for tailoring the chemical composition, structure, and properties of layered perovskites, warranting the novel properties of halide perovskites.

show abstract

Persistent Exciton Dressed by Weak Polaronic Effect in Rigid and Harmonic Lattice Dion–Jacobson 2D Perovskites

Lei,

Xu,

Zhang

et al. 2024

ACS Nano

View full text Add to dashboard Cite

The emerging two-dimensional (2D) Dion−Jacobson (DJ) perovskites with bidentate ligands have attracted significant attention due to enhanced structural stability compared with conventional Ruddlesden−Popper (RP) perovskites with monodentate ligands linked by van der Waals interactions. However, how the pure chemical bond lattice interacts with excited state excitons and its impact on the exciton nature and dynamics in 2D DJperovskites, particularly in comparison to RP-perovskites, remains unexplored. Herein, by a combined spectroscopy study on excitonic and structural dynamics, we reveal a persistent exciton dressed by a weak polaronic effect in DJ-perovskite due to their rigid and harmonic lattice, in striking contrast to significantly screened exciton polaron observed in RPperovskites. Despite the similar exciton binding energy (∼0.3 eV) in both n = 1 DJ-and RPperovskites with near-identical crystal structure, photoexcitation results in a slightly screened exciton with minimal structural relaxation and a retained binding energy of ∼0.29 eV in DJperovskites but strongly screened exciton polaron with a binding energy of ∼0.13 eV in RPperovskites. Structural dynamics further highlight the rigid and harmonic lattice motion in DJ-perovskites, as opposed to the thermally activated anharmonic lattice in RP-perovskites, arising from their distinct bonding modes. Our study offers insights into modulating excited state properties in 2D perovskites, simulating the rational design of hybrid semiconductors with tailored properties and functionalities.

show abstract

Spin Texture Sensitive Photodetection by Dion–Jacobson Tin Halide Perovskites

Cited by 3 publications

References 103 publications

Room-Temperature Photoferroelectrics Semiconductor Driven by the Interlayer Confinement Effect

Room-Temperature Photoferroelectrics Semiconductor Driven by the Interlayer Confinement Effect

Thermal Evolution of the Structure and Luminescence of the Hybrid-Cation-Stabilized [(4AMTP)PbBr₂]₂PbBr₄ Layered Perovskite

Persistent Exciton Dressed by Weak Polaronic Effect in Rigid and Harmonic Lattice Dion–Jacobson 2D Perovskites

Contact Info

Product

Resources

About

Spin Texture Sensitive Photodetection by Dion–Jacobson Tin Halide Perovskites

Cited by 3 publications

References 103 publications

Room-Temperature Photoferroelectrics Semiconductor Driven by the Interlayer Confinement Effect

Room-Temperature Photoferroelectrics Semiconductor Driven by the Interlayer Confinement Effect

Thermal Evolution of the Structure and Luminescence of the Hybrid-Cation-Stabilized [(4AMTP)PbBr2]2PbBr4 Layered Perovskite

Persistent Exciton Dressed by Weak Polaronic Effect in Rigid and Harmonic Lattice Dion–Jacobson 2D Perovskites

Contact Info

Product

Resources

About

Thermal Evolution of the Structure and Luminescence of the Hybrid-Cation-Stabilized [(4AMTP)PbBr₂]₂PbBr₄ Layered Perovskite