Temperature and pressure induced structural transitions of lead iodide perovskites

Vishnoi, Pratap; Rao, C. N. R.

doi:10.1039/d3ta05315f

Cited by 6 publications

(3 citation statements)

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“…During the application of pressure to substances with constant composition and temperature, a variety of materials exhibit structural transition. Structural transitions, associated with phase transitions, cell volumes, lattice parameters, and orientations, can be induced by fundamental thermodynamic variables [54,55]. Two stable structures of SnSe have been reported: α-SnSe (T < 800 K) and β-SnSe (T > 800 K).…”

Section: Pressure-induced Snse Structural Transitionsmentioning

confidence: 99%

Pressure-Induced Modulation of Tin Selenide Properties: A Review

Cheng,

Zhang,

Lin

et al. 2023

Molecules

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Tin selenide (SnSe) holds great potential for abundant future applications, due to its exceptional properties and distinctive layered structure, which can be modified using a variety of techniques. One of the many tuning techniques is pressure manipulating using the diamond anvil cell (DAC), which is a very efficient in situ and reversible approach for modulating the structure and physical properties of SnSe. We briefly summarize the advantages and challenges of experimental study using DAC in this review, then introduce the recent progress and achievements of the pressure-induced structure and performance of SnSe, especially including the influence of pressure on its crystal structure and optical, electronic, and thermoelectric properties. The overall goal of the review is to better understand the mechanics underlying pressure-induced phase transitions and to offer suggestions for properly designing a structural pattern to achieve or enhanced novel properties.

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Section: Pressure-induced Snse Structural Transitionsmentioning

confidence: 99%

Pressure-Induced Modulation of Tin Selenide Properties: A Review

Cheng,

Zhang,

Lin

et al. 2023

Molecules

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“…The global and local structure around the dopant center control the optical and optoelectronic properties. Most of the perovskites and double perovskites show structural phase transitions with variation in temperature and pressure. − For example, Cs 2 NaBiCl 6 crystallizes in the cubic Fm m space group at room temperature and converts to the tetragonal I 4/ mmm phase below 110 K . Such phase transitions might influence the dopant emission that is sensitive to the crystal field around the dopant ion.…”

Section: Introductionmentioning

confidence: 99%

Unveiling Temperature-Induced Structural Phase Transition and Luminescence in Mn²⁺-Doped Cs₂NaBiCl₆ Double Perovskite

Banerjee,

Saikia,

Molokeev

et al. 2024

Chem. Mater.

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Halide double perovskites like Cs 2 NaBiCl 6 are good host materials for luminescent dopants like Mn 2+ . The nature of photoluminescence (PL) depends on the local structure around the dopant ion, and doping may sometimes influence the global structure of the host. Here, we unveil the correlation between the temperature-induced (global) structural phase transition of Mn 2+ -doped Cs 2 NaBiCl 6 with the local structure and PL of the Mn 2+ dopant. X-ray diffraction analysis shows Mn 2+ -doped Cs 2 NaBiCl 6 is in a cubic (Fm3m) phase between 300 and 110 K, below which the phase changes to tetragonal (I4/mmm), which persists at least until 15 K. The small (∼1%) doping amount does not alter the phase transition behavior of Cs 2 NaBiCl 6 . Importantly, the phase transition does not influence the Mn 2+ d-electron PL. The PL peak energy, intensity, spectral width, and lifetime do not show any signature of the phase transition between 300−6 K. The hyperfine splitting in temperature-dependent electron paramagnetic spectra of Mn 2+ ions also remain unchanged across the phase transition. These results suggest that the global structural phase transition of the host does not influence the local structure and emission property of the dopant Mn 2+ ion. This structure−property insight might be explored for other transition-metal-and lanthanide-doped halide double perovskites as well. The stability of dopant emission regardless of the structural phase transition bodes well for their potential applications in phosphor-converted light emitting diodes.

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“…The bandgaps of I 3 À intercalated systems are comparable or even narrower than that of CH 3 NH 3 PbI 3 (E g = ~1.55 eV) which is one of the most studied halide perovskites. [24] Despite significant progress on low-dimensional bismuth halides, hybridizing organic and inorganic ingredients to develop hybrid materials with controlled composition and dimensionality is often challenging, and further efforts are therefore strongly needed. In this study, we have developed an approach to tune the dimensionality of hybrid bismuth iodides by using rigid and flexible organic diammonium spacers (Figure 1b).…”

Section: Introductionmentioning

confidence: 99%

0‐D and 1‐D Perovskite‐like Hybrid Bismuth(III) Iodides

Saraswat,

Vishnoi

2024

Chemistry An Asian Journal

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Low‐dimensional hybrid bismuth halide perovskites have recently emerged as a class of non‐toxic alternative to lead perovskites with promising optoelectronic properties. Here, we report three hybrid bismuth(III)‐iodides: 0‐D (H2DAC)2Bi2I10·6H2O (H2DAC_Bi_I), 0‐D (H2DAF)4Bi2I10·2I3·2I·6H2O (H2DAF_Bi_I), and 1‐D (H2DAP)BiI5 (H2DAP_Bi_I) (where H2DAC = trans‐1,4‐diammoniumcyclohexane; H2DAF = 2,7‐diammoniumfluorene and H2DAP = 1,5‐diammoniumpentane). Their synthesis, single‐crystal X‐ray structures, and photophysical properties are reported. The first two compounds comprise edge‐sharing [Bi2I10]4‐ dimers, while the last compound has cis‐corner‐sharing 1‐D chains of [BiI6]3‐ octahedra. Intercalation of triiodide (I3‐) and iodide (I‐) ions enhance electronic coupling between the [Bi2I10]4‐ of H2DAF_Bi_I, leading to enhanced optical absorption when compared to H2DAC_Bi_I which lacks such intercalants. Furthermore, calorimetric and variable temperature X‐ray diffraction measurements suggest a centrosymmetric to non‐centrosymmetric phase transition (monoclinic P212121 ↔ orthorhombic Pnma) of H2DAP_Bi_I at 448 K (in heating step) and 443 K (in cooling step).

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Temperature and pressure induced structural transitions of lead iodide perovskites

Abstract: During the past fourteen years, conventional lead iodide perovskites, APbI3 [A = Cs+, methylammonium (CH3NH3+) and formamidinium (NH2CHNH2+)], have emerged as the forerunner materials for optoelectronic applications, including photovoltaics. However,...

Cited by 6 publications

References 143 publications

Pressure-Induced Modulation of Tin Selenide Properties: A Review

Pressure-Induced Modulation of Tin Selenide Properties: A Review

Unveiling Temperature-Induced Structural Phase Transition and Luminescence in Mn²⁺-Doped Cs₂NaBiCl₆ Double Perovskite

0‐D and 1‐D Perovskite‐like Hybrid Bismuth(III) Iodides

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Temperature and pressure induced structural transitions of lead iodide perovskites

Abstract: During the past fourteen years, conventional lead iodide perovskites, APbI3 [A = Cs+, methylammonium (CH3NH3+) and formamidinium (NH2CHNH2+)], have emerged as the forerunner materials for optoelectronic applications, including photovoltaics. However,...

Cited by 6 publications

References 143 publications

Pressure-Induced Modulation of Tin Selenide Properties: A Review

Pressure-Induced Modulation of Tin Selenide Properties: A Review

Unveiling Temperature-Induced Structural Phase Transition and Luminescence in Mn2+-Doped Cs2NaBiCl6 Double Perovskite

0‐D and 1‐D Perovskite‐like Hybrid Bismuth(III) Iodides

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Unveiling Temperature-Induced Structural Phase Transition and Luminescence in Mn²⁺-Doped Cs₂NaBiCl₆ Double Perovskite