Chiral halide perovskite crystals for optoelectronic applications

Dang, Yangyang; Liu, Xiaolong; Cao, Bingqiang; Tao, Xiaofeng

doi:10.1016/j.matt.2020.12.018

Cited by 135 publications

(120 citation statements)

References 120 publications

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“…The Tauc plots and the normalized photoluminescence (PL) spectra of the samples investigated in ref. 7 are reported in Figures 1d and 1e, respectively. A progressive broadening of the PL spectra can be seen as a function of × (amount of FA) Interestingly, the analogous Pbbased system, namely MA1-xFAxPbI3, shows a very limited variation of the band gap moving from MAPbI 3 (1.48 eV) to FAPbI 3 (1.53 eV).…”

Section: D Perovskitesmentioning

confidence: 96%

“…b) SEM image of MAGeI 3 and c) of FAGeI 3 ; d) Tauc plots and e) PL spectra of the MA1 -x FA x GeI3 (x = 0, 0.25, 0.5, 0.75, 1) solid solution. Reproduced from reference [7] with permission from Elsevier.…”

Section: D Perovskitesmentioning

confidence: 99%

“…Noteworthy, the recent emergence of chiral perovskites as suitable materials for nonlinear optical properties, among which SHG response, could be further explored by considering Ge-containing systems. [7] More recently, the MA1-xFAxGeI3 (x = 0, 0.25, 0.5, 0.75, 1) solid solution was systematically investigated by Yue et al [8] Differently from ref. 5, the authors devised a simple synthetic procedure modifying and adapting traditional ligand-assisted reprecipitation method for Pb-based perovskite synthesis, thus avoiding the use of concentrated HI and H 3 PO 2 .…”

Section: D Perovskitesmentioning

confidence: 99%

“…[10][11][12] The authors of ref. 7 carried out also a deep study on the stability of the prepared phase by performing XRD analysis as a function of exposure time of the perovskite under glove-box conditions and air. In general, while a good stability under argon storage has been found, air-exposure leads to GeO 2 formation after 24 hours, thus confirming the instability of the Ge 2 + ion toward oxidation to Ge 4 + .…”

Section: D Perovskitesmentioning

confidence: 99%

“…Clearly, enlarging the family of hybrid organic‐inorganic geranium halide perovskite could provide more solid conclusions regarding the role of A‐site cation on nonlinear optical properties and help in designing even more efficient phases. Noteworthy, the recent emergence of chiral perovskites as suitable materials for nonlinear optical properties, among which SHG response, could be further explored by considering Ge‐containing systems [7] …”

Section: Germanium Halide Perovskitesmentioning

confidence: 99%

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Germanium‐Based Halide Perovskites: Materials, Properties, and Applications

2021

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Perovskites are attracting an increasing interest in the wide community of photovoltaics, optoelectronic, and detection, traditionally relying on lead-based systems. This Minireview provides an overview of the current status of experimental and computational results available on Ge-containing 3D and lowdimensional halide perovskites. While stability issues analogous to those of tin-based materials are present, some strategies to afford this problem in Ge metal halide perovskites (MHPs) for photovoltaics have already been identified and successfully employed, reaching efficiencies of solar devices greater than 7 % at up to 500 h of illumination. Interestingly, some Gecontaining MHPs showed promising nonlinear optical responses as well as quite broad emissions, which are worthy of further investigation starting from the basic materials chemistry perspective, where a large space for properties modulation through compositions/alloying/fnanostructuring is present.

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Section: D Perovskitesmentioning

confidence: 96%

Section: D Perovskitesmentioning

confidence: 99%

Section: D Perovskitesmentioning

confidence: 99%

Section: D Perovskitesmentioning

confidence: 99%

Section: Germanium Halide Perovskitesmentioning

confidence: 99%

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Germanium‐Based Halide Perovskites: Materials, Properties, and Applications

2021

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Layered Metal‐Halide Perovskite Single‐Crystalline Microwire Arrays for Anisotropic Nonlinear Optics

Zhao

Guo

et al. 2021

Adv Funct Materials

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Hybrid organic-inorganic metal-halide perovskites with diverse structure tunability are promising for nonlinear-optical (NLO) applications, such as frequency conversion and electro-optic modulation. For integrated NLO devices, single-crystalline perovskite micro-and nanostructures with high quality and multifunctionality are in high demand. However, the fabrication of singlecrystalline perovskites arrays is still challenging in regulating liquid dynamics and crystal growth simultaneously. Herein, a capillary-bridge-manipulated strategy is established to steer the dewetting process of microdroplets and provide spatial confinement for crystal growth. These 1D perovskite microwire arrays show regulated geometry, pure orientation, and single crystallinity. Chiral ammonium molecules are introduced into the metal-halide octahedral quantum wells to break the centrosymmetry of the perovskite, allowing the perovskite to exhibit excellent second-order NLO properties. The as-prepared microwire arrays also demonstrate linearly polarized second harmonic generation and two-photon fluorescence. Microwire arrays exhibit higher second harmonic conversion efficiency compared with their polycrystalline thin-film counterparts. It is believed that this strategy for the fabrication of chiral perovskite microstructure arrays holds great promise for NLO integrated applications and opens up an avenue to explore multifunctional chiral perovskites.

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Enabling Efficient Blue‐Emissive Circularly Polarized Luminescence by In Situ Crafting of Chiral Quasi‐2D Perovskite Nanosheets within Polymer Nanofibers

Wen

et al. 2022

Adv Funct Materials

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Chiral halide perovskite crystals for optoelectronic applications

Cited by 135 publications

References 120 publications

Germanium‐Based Halide Perovskites: Materials, Properties, and Applications

Germanium‐Based Halide Perovskites: Materials, Properties, and Applications

Layered Metal‐Halide Perovskite Single‐Crystalline Microwire Arrays for Anisotropic Nonlinear Optics

Enabling Efficient Blue‐Emissive Circularly Polarized Luminescence by In Situ Crafting of Chiral Quasi‐2D Perovskite Nanosheets within Polymer Nanofibers

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