Hydrogen-bond enhancement triggered structural evolution and band gap engineering of hybrid perovskite (C6H5CH2NH3)2PbI4 under high pressure

Tian, Can; Liang, Yongfu; Chen, Wuhao; Huang, Yanping; Huang, Xiaoli; Tian, Fang; Yang, Xinyi

doi:10.1039/c9cp05904k

Cited by 23 publications

(46 citation statements)

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“…The excitonic and vibrational properties can be easily tailored by an appropriate choice of organic spacers from a plethora of available molecules. 9,13,17,35,[37][38][39][40][41] Despite the fact that the band-edge states of 2D perovskites are derived from metal and halide orbitals 14,[42][43][44] the absorption and emission properties are affected by the octahedral templating (steric effects), 39,42,[45][46][47] dielectric confinement 17,20 and the strength of the electron-phonon coupling. 32,35,48,49 The possibility to tune the electron-phonon coupling strength, unique for 2D perovskite semiconduc-tors, allows to tune their emissive properties from monochromatic to white-light 11,35,50 as well as controlling the carrier cooling rate 51 and transport properties 48,[52][53][54] crucial for any device.…”

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confidence: 99%

Revealing Excitonic Phonon Coupling in (PEA)₂(MA)_n−1Pb_nI_3n+1 2D Layered Perovskites

Urban

Chehade

Dyksik

et al. 2020

J. Phys. Chem. Lett.

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confidence: 99%

Revealing Excitonic Phonon Coupling in (PEA)₂(MA)_n−1Pb_nI_3n+1 2D Layered Perovskites

Urban

Chehade

Dyksik

et al. 2020

J. Phys. Chem. Lett.

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“…The data are extracted from refs. [ 37,40,42,49,51,61–64,66,80,81,84,87–93 ] . The arrows indicate drastic variations in the MHP lattice parameters.…”

Section: Mhps Subjected To Stress/strainmentioning

confidence: 99%

“…All experimental data are extracted from refs. [ 34–37,40–42,49,51,52,55,57,58,60,61,63–66,68,70,72,74,80,82,84,87–92,96–100 ] .…”

Section: Mhps Subjected To Stress/strainmentioning

confidence: 99%

“…Reproduced with permission. [ 89 ] Copyright 2020, Royal Society of Chemistry. e) Phase evolutions of MAPbI 3 , MAPbBr 3 , and MAPbCl 3 during the high‐pressure tests conducted at 293 K. Reproduced with permission.…”

Section: Mhps Anisotropic Characteristicsmentioning

confidence: 99%

“…In a recent study, Tian et al. [ 89 ] reported a narrowed bandgap value for 2D (PMA) 2 PbI 4 ((C 6 H 5 CH 2 NH 3 ) 2 PbI 4 ) perovskite approaching the Shockley–Queisser limit. Li et al.…”

Section: Mhps Anisotropic Characteristicsmentioning

confidence: 99%

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Strain Engineering of Metal Halide Perovskites on Coupling Anisotropic Behaviors

Jiao

Wang

et al. 2020

Adv Funct Materials

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The power conversion efficiencies (PCEs) of the solar cells containing metal halide perovskites (MHPs) have rapidly increased and exceeded 25% during the past decade. The photovoltaic properties of these devices are extensively investigated in terms of their microstructures, environmental characteristics, and carrier dynamics, and the MHP structural evolution under high pressure is evaluated. In addition, the energy level structure, electron/hole dynamics, and optical/electronic properties of MHPs with anisotropic crystal structures are examined. However, the correlation between the structural anisotropy and material properties of these perovskites is rarely considered in the literature studies on their high‐pressure behavior. In this progress report, the optical/electronic properties of MHPs with anisotropic structures under thermal, mechanically imposed, and in‐service strains/stresses that have been previously neglected by researchers are summarized.

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Pressure‐Induced Metallization of Lead‐Free Halide Double Perovskite (NH₄)₂PtI₆

Wang

et al. 2022

Advanced Science

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Metallization has recently garnered significant interest due to its ability to greatly facilitate chemical reactions and dramatically change the properties of materials. Materials displaying metallization under low pressure are highly desired for understanding their potential properties. In this work, the effects of the pressure on the structural and electronic properties of lead-free halide double perovskite (NH 4 ) 2 PtI 6 are investigated systematically. Remarkably, an unprecedented bandgap narrowing down to the Shockley-Queisser limit is observed at a very low pressure of 0.12 GPa, showing great promise in optoelectronic applications. More interestingly, the metallization of (NH 4 ) 2 PtI 6 is initiated at 14.2 GPa, the lowest metallization pressure ever reported in halide perovskites, which is related to the continuous increase in the overlap between the valence and conduction band of I 5p orbital. Its structural evolution upon compression before the metallic transition is also tracked, from cubic Fm-3m to tetragonal P4/mnc and then to monoclinic C2/c phase, which is mainly associated with the rotation and distortions within the [PtI 6 ] 2octahedra. These findings represent a significant step toward revealing the structure-property relationships of (NH 4 ) 2 PtI 6 , and also prove that high-pressure technique is an efficient tool to design and realize superior optoelectronic materials.

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Hydrogen-bond enhancement triggered structural evolution and band gap engineering of hybrid perovskite (C₆H₅CH₂NH₃)₂PbI₄ under high pressure

Abstract: Hybrid organic–inorganic perovskites (HOIPs) have gained substantial attention due to their excellent photovoltaic and optoelectronic properties.

Cited by 23 publications

References 23 publications

Revealing Excitonic Phonon Coupling in (PEA)₂(MA)_n−1Pb_nI_3n+1 2D Layered Perovskites

Revealing Excitonic Phonon Coupling in (PEA)₂(MA)_n−1Pb_nI_3n+1 2D Layered Perovskites

Strain Engineering of Metal Halide Perovskites on Coupling Anisotropic Behaviors

Pressure‐Induced Metallization of Lead‐Free Halide Double Perovskite (NH₄)₂PtI₆

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Hydrogen-bond enhancement triggered structural evolution and band gap engineering of hybrid perovskite (C6H5CH2NH3)2PbI4 under high pressure

Abstract: Hybrid organic–inorganic perovskites (HOIPs) have gained substantial attention due to their excellent photovoltaic and optoelectronic properties.

Cited by 23 publications

References 23 publications

Revealing Excitonic Phonon Coupling in (PEA)2(MA)n−1PbnI3n+1 2D Layered Perovskites

Revealing Excitonic Phonon Coupling in (PEA)2(MA)n−1PbnI3n+1 2D Layered Perovskites

Strain Engineering of Metal Halide Perovskites on Coupling Anisotropic Behaviors

Pressure‐Induced Metallization of Lead‐Free Halide Double Perovskite (NH4)2PtI6

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Hydrogen-bond enhancement triggered structural evolution and band gap engineering of hybrid perovskite (C₆H₅CH₂NH₃)₂PbI₄ under high pressure

Revealing Excitonic Phonon Coupling in (PEA)₂(MA)_n−1Pb_nI_3n+1 2D Layered Perovskites

Revealing Excitonic Phonon Coupling in (PEA)₂(MA)_n−1Pb_nI_3n+1 2D Layered Perovskites

Pressure‐Induced Metallization of Lead‐Free Halide Double Perovskite (NH₄)₂PtI₆