Metal Halide Perovskite Alloy: Fundamental, Optoelectronic Properties and Applications

Wei, Qiong; Ghasemi, Mehri; Wang, Rongfei; Wang, Chong; Wang, Juan; Zhou, Weijie; Jia, Baohua; Yu, Yang; Wen, Xiaoming

doi:10.1002/adpr.202200236

Cited by 13 publications

(9 citation statements)

References 219 publications

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“…Most efficient devices fabricated with HPs today employ mixed systems, including the currently most efficient perovskite solar cells. − A compositional variety of the ABX 3 HP compounds can be explored considering the mixtures of several perovskites instead of single compounds. Consequently, the component substitution effect on the characteristics of HPs and their devices has been widely evaluated. − In HPs with A-site cation substitutions, using organic cations mainly, investigations were conducted in systems of the types FA x MA 1‑ x PbI 3 , − GA x MA 1– x PbI 3 , − DMA x MA 1– x PbI 3 , − EA x MA 1– x PbI 3 , , and GA x FA x MA 1–2 x PbI 3 . In these systems, MA + , FA + , GA + , DMA + , and EA + are the methylammonium, formamidinium, guanidinium, dimethylammonium, and ethylammonium cations, respectively.…”

Section: Introductionmentioning

confidence: 99%

Differing Effects of Mixed A-Site Composition on the Properties of Hybrid Lead Iodide Perovskites

2023

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Halide perovskites (HPs) appeared as a revolutionary class of relevant optoelectronic materials. Optimizing these materials involves developing mixed formulations currently used in many of the most efficient HP-based devices. Mixing A-site organic cations has been a widely used strategy to achieve the desired characteristics in these perovskites. Few of the reported works were devoted to understanding the effects of different organic cations on the properties of the resulting HPs. In the present work, we report a detailed study on the structural, thermal, and electrical properties and degradation assays in HPs with mixing A-site organic cations at the MAPbI 3 , FA 0.10 MA 0.90 PbI 3 , GA 0.10 MA 0.90 PbI 3 , and GA 0.05 FA 0.05 MA 0.90 PbI 3 compositions. The results show that the charge transport properties change consistently with the A-site cation size. However, the structure and phase transitions are unusually affected by the composition, suggesting that other characteristics of substituent cations are relevant to the behavior of the resulting materials. Finally, thermal degradation tests reveal that, contrary to general expectations, not all mixed compositions are more stable than their related pure HPs. More than that, the order of degradation kinetics may also depend on the type of substituent cation. The results elucidate the particularities of each type of organic cation on the properties of mixed perovskites and advance knowledge about these relevant materials.

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Section: Introductionmentioning

confidence: 99%

Differing Effects of Mixed A-Site Composition on the Properties of Hybrid Lead Iodide Perovskites

2023

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“…3 It is noted that this mass transport-dominated strategy is general to HP semiconductors with different halide components. 14 For instance, CsPbCl 3 and CsPbI 3 with a quasi-boat morphology are also fabricated (Figure S6a,b). The PL spectra of the quasi-boat SCs are presented in Figure 2c, where the emission peaks at 412.7, 524.1, and 702.2 nm correspond to those of CsPbCl 3 , CsPbBr 3 , and CsPbI 3 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Self-Focusing and Single-Mode Lasers from Novel Cavity Architecture for on-Fiber Integration

Feng,

Wu,

Zhou

et al. 2024

ACS Photonics

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The collection and utilization of microlaser emission from semiconductor microcrystals (SCs) are essential to develop high-performance coherent light sources for integrated photonics and optoelectronics. Herein, a novel and high-quality (Q) microlaser that allows efficient coupling to the fiber base is realized by cavity structure engineering. Specifically, we design and fabricate a three-dimensional (3D) confined wave-chaotic resonator by taking perovskite semiconductors as the model system. The novel SC resonators with an inverted-boat geometry enable the achievement of a self-focusing and high-Q single-mode microlaser for the first time. Corroborated by the finite element calculation, the self-focusing behavior is well explained by the chaotic dynamics in the non-Hermitian system, and the strong localization of the wave function around unstable periodic orbits is responsible for the high Q-factor. On this basis, the efficient collection and transportation of laser emission are demonstrated by the laterally coupled laser-on-fiber configuration.

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“…Hybrid organic–inorganic halide perovskites have attracted significant attention owing to their exceptional optoelectronic properties. − These properties include an ideal solar-matching band gap, high absorption coefficient, long charge carrier lifetime, large diffusion length, and remarkable defect tolerance. − As an emerging photovoltaic material, hybrid halide perovskite with ABX 3 formula contains large organic A and B cations with halogens (X = I, Br, and Cl). − Typically, the monovalent A cation is dodecahedral occupied and the divalent cation B is coordinated in an octahedral pattern to halide atoms. These materials have demonstrated impressive performance as light-absorbing layers in solar cells, with device efficiencies surpassing 26.1% .…”

Section: Introductionmentioning

confidence: 99%

Band Gap Alteration of Halide Mixing in Hybrid Perovskites: A First-Principles Study with Statistical Analysis

Shahzadi,

Yang,

Fatima

et al. 2024

J. Phys. Chem. A

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Despite numerous studies on the band gap of threedimensional halide perovskites using the first-principles calculations, there are still significant discrepancies between theoretical and experimental values. Various solutions have been proposed, such as employing a system-specific hybrid functional with varying degrees of exact exchange and explicitly incorporating spin−orbit coupling effects. Our research involved a comprehensive investigation of three typical lead-containing three-dimensional perovskites MAPbI 3 , MAPbBr 3 , and MAPbCl 3 (MA = CH 3 NH 3 ). Through a statistical analysis comparing mean absolute error (MAE) with experimental results, we demonstrated that the nonlocal van der Waals (vdW) density functional corrections (i.e., optB86b) yielded the most approximate lattice parameters in comparison to experimental values. Furthermore, based on these lattice parameters, the HSE06 hybrid functional is the optimal estimation of the band gap among all the options. Moreover, we investigated three sets of mixed three-dimensional halide perovskites by varying the halide component. This exploration contributes to the identification of MAPb(Br 0.333 I 0.667 ) 3 and MAPb(Cl 0.333 I 0.667 ) 3 as exhibiting the smallest band gap of 1.315 (1.867) eV and 1.313 (1.885) eV for PBE (HSE06), respectively. These band gaps were determined using the HSE06 method with the optimized lattice by PBE considering the optB86b corrections. The approach employed in this work produced a band gap trend closely aligned with experimental observations, underscoring the importance of adopting a reliable and material-independent computational strategy when screening new halide perovskite materials for optoelectronic applications.

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Metal Halide Perovskite Alloy: Fundamental, Optoelectronic Properties and Applications

Cited by 13 publications

References 219 publications

Differing Effects of Mixed A-Site Composition on the Properties of Hybrid Lead Iodide Perovskites

Differing Effects of Mixed A-Site Composition on the Properties of Hybrid Lead Iodide Perovskites

Self-Focusing and Single-Mode Lasers from Novel Cavity Architecture for on-Fiber Integration

Band Gap Alteration of Halide Mixing in Hybrid Perovskites: A First-Principles Study with Statistical Analysis

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