Interplay of spin–orbit coupling and lattice distortion in metal substituted 3D tri-chloride hybrid perovskites

Katan, Claudine; Pédesseau, Laurent; Képénékian, Mikaël; Rolland, Alain; Even, Jacky

doi:10.1039/c4ta06418f

Cited by 107 publications

(157 citation statements)

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“…These deformations are a contributing factor to the different properties of this class of perovskite. 58,59 However, if the loss of inversion symmetry is a requirement for the spin splitting, we stress that the loss of too many symmetry operations can lead to an unusable Rashba effect with uncharacteristic spin rotations.…”

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confidence: 99%

Rashba and Dresselhaus Effects in Hybrid Organic–Inorganic Perovskites: From Basics to Devices

et al. 2015

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We use symmetry analysis, density functional theory calculations and k · p modeling to scrutinize Rashba and Dresselhaus effects in hybrid organic-inorganic halide perovskites. These perovskites are at the center of a recent revolution in the field of photovoltaics but have also demonstrated potential for optoelectronic applications such as transistors and light emitters.Due to a large spin-orbit coupling of the most frequently used metals, they are also predicted to offer a promising avenue for spin-based applications. With an in-depth inspection of the electronic structures and bulk lattice symmetries of a variety of systems, we analyse the origin of the spin splitting in two-and three-dimensional hybrid perovskites. It is shown that low-dimensional nanostructures made of CH 3 NH 3 PbX 3 (X=I, Br) lead to spin splittings that can be controlled by an applied electric field. This new findings further open the door for a perovskite-based spintronics.

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confidence: 99%

Rashba and Dresselhaus Effects in Hybrid Organic–Inorganic Perovskites: From Basics to Devices

et al. 2015

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“…27,47,50,[54][55][56] For 3D materials containing Ge, the tolerance factor is more compatible with the onset of a polar distortion, and a sizable SOC may also be present, especially with the contribution of heavy halogen atoms. 57 More complex cases may correspond to combinations of both antiferrodistortions and ferroelectric behavior. More, due to the inherent instability of the halide perovskite lattice in most cases, local symmetry breaking may be spread in the material, at the boundaries between grains or at the surfaces.…”

mentioning

confidence: 99%

Rashba and Dresselhaus Couplings in Halide Perovskites: Accomplishments and Opportunities for Spintronics and Spin–Orbitronics

Képénékian

Even

2017

J. Phys. Chem. Lett.

174

181

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In halide hybrid organic-inorganic perovskites (HOP), spin-orbit coupling (SOC) presents a well-documented large influence on band structure. However, SOC may also present more exotic effects, such as Rashba and Dresselhaus couplings. In this perspective, we start by recalling the main features of this effect and what makes HOP materials ideal candidates for the generation and tuning of spin-states. Then, we detail the main spectroscopy techniques able to characterize these effects and their application to HOP. Finally, we discuss potential applications in spintronics and in spin-orbitronics in those non-magnetic systems, that would complete the skill set of HOP and perpetuate its ride on the crest of the wave of popularity started with optoelectronics and photovoltaics. Graphical TOC EntryPage 2 of 29 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 A c c e p t e d m a n u s c r i p tThe continuous success of halide hybrid organic-inorganic perovskites (HOP) as solar cell active materials follows several paths. The main activity after 2012 consisted in the search for improvement of the power conversion efficiency (PCE) in typical laboratory configuration (small area, controlled environment). It led to an unprecedented growth of the PCE that has repeatedly reached record values over 22%. 1,2 Meanwhile, another branch of HOP studies have been focused on improving the stability of those cells unfortunately sensitive to light and moisture. 3,4 Opting for various mixtures of halide and cations, 2 various forms, e.g. layered HOP, [5][6][7] or by encapsulating the materials, the stability went from few hours to several thousands hours. Encouraged by these breakthroughs, a third path has pushed the area of hight performance solar cells from less than 1 cm 2 up to 50 cm 2 with a PCE of 12.6%, 8 bringing the perovskite solar cells even closer to commercial use.A common point to all these record HOP materials is the presence of lead. Even though a large effort has been and still is dedicated to the search for efficient lead-free HOP materials, 9,10 their current record PCE remains around 6.4%. 11 It is certainly unfortunate for solar cells because of the known toxicity of lead, 12 even though solutions have early been proposed, 13,14 however, due to the large spin-orbit coupling (SOC) exhibited by Pb, it represents a great opportunity for optoelectronics, spintronics and spin-orbitronics applications where undesired heavy elements can find a place (e.g. arsenic, cadmium).The first identified effect of SOC in HOP materials has been a surprising giant splitting of conduction bands, 15,16 instead of the usual valence band splitting observed in classical semiconductors. 17 It has a strong influence on the band gap energy as well as on the effective masses and the oscillator strength of the optical transitions at the band gap. The chan...

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“…Further ferroelectric structures for various metals, cations, and halogens were proposed, of which some simple examples can be found in Amm 2, R 3 m and Cmc 2 1 . For 3D HOPs with Ge content, the occurrence of polar distortion is more closely consistent with the tolerance factor and large‐scale SOC may occur, particularly under the action of heavier halogens . More complicated situations may conform to a union of ferroelectric and antiferrodistortive properties.…”

Section: Basic Concepts and Principles For Realization Of Hopsmentioning

confidence: 97%

“…[4,66,[70][71][72][73] For 3D HOPs with Ge content, the occurrence of polar distortion is more closely consistent with the tolerance factor and largescale SOC may occur, particularly under the action of heavier halo gens. [74] More complicated situations may conform to a union of ferroelectric and antiferrodistortive properties. In addition, because of the inherent instability that is common to the HOP lattice, breaking of the local symmetry may diffuse through the material, on the surfaces or along the grain boundaries.…”

Section: Characteristics and Realization Mechanism For The Rashba Effmentioning

confidence: 99%

Spintronics of Hybrid Organic–Inorganic Perovskites: Miraculous Basis of Integrated Optoelectronic Devices

Liao

Cheng

et al. 2019

Advanced Optical Materials

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Hybrid organic–inorganic perovskite (HOP) spintronics aims to make full use of the properties of electron spin. HOP spintronics has recently emerged as a promising field of research because it provides a new precisely manipulable degree of freedom. The flourishing development activity in this field has benefited from the unique intrinsic spin‐related optoelectronic properties of HOPs, which include triplet formation, a large Stark effect, the magneto‐optical effect, polarized light‐related effects, and complex light emission characteristics, which offer the possibility of providing a new way to control the performance of integrated optoelectronic devices through spin interactions between photons and electrons. Along with the continuous improvements in the theoretical research into HOP spintronics, large numbers of novel optoelectronic devices have been proposed and demonstrated experimentally and have shown great potential for fabrication of next‐generation, high‐performance integrated optoelectronic chips. This review provides an overview of the fundamental principles, novel spin‐generated physical effects, and diverse structures of HOP spintronics systems, along with the applications of HOP spintronics in optoelectronic devices, while also undertaking a general review of the remaining challenges and proposing possible development directions that require further study for the application of HOP spintronics to integrated optoelectronic devices.

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Interplay of spin–orbit coupling and lattice distortion in metal substituted 3D tri-chloride hybrid perovskites

Abstract: Metal and halogen substitution in hybrid perovskites reveals the interplay between spin–orbit coupling, structural distortions and many-body effects controlling band-gaps.

Cited by 107 publications

References 63 publications

Rashba and Dresselhaus Effects in Hybrid Organic–Inorganic Perovskites: From Basics to Devices

Rashba and Dresselhaus Effects in Hybrid Organic–Inorganic Perovskites: From Basics to Devices

Rashba and Dresselhaus Couplings in Halide Perovskites: Accomplishments and Opportunities for Spintronics and Spin–Orbitronics

Spintronics of Hybrid Organic–Inorganic Perovskites: Miraculous Basis of Integrated Optoelectronic Devices

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