Advances in the Application of Perovskite Materials

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Июль 10, 2023

Nowadays, the soar of photovoltaic performance perovskite solar cells has set off a fever in study metal halide materials. The excellent optoelectronic properties and defect tolerance feature allow to be employed wide variety applications. This article provides holistic review over current progress future prospects materials representative promising applications, including traditional devices (solar cells, light-emitting diodes, photodetectors, lasers), cutting-edge technologies terms neuromorphic (artificial synapses memristors) pressure-induced emission. highlights fundamentals, remaining challenges for each application, aiming provide comprehensive overview development status navigation research devices.

Язык: Английский

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Light Emission of Self‐Trapped Excitons in Inorganic Metal Halides for Optoelectronic Applications

Advanced Materials, Год журнала: 2022, Номер 34(52)

Опубликована: Март 24, 2022

Abstract Self‐trapped excitons (STEs) have recently attracted tremendous interest due to their broadband emission, high photoluminescence quantum yield, and self‐absorption‐free properties, which enable a large range of optoelectronic applications such as lighting, displays, radiation detection, special sensors. Unlike free excitons, the formation STEs requires strong coupling between excited state soft lattice in low electronic dimensional materials. The chemical structural diversity metal halides provides an ideal platform for developing efficient STE emission Herein, overview recent progress on materials is presented. relationships fundamental mechanisms, compositions, device performances are systematically reviewed. On this basis, currently existing challenges possible development opportunities field

Язык: Английский

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Advanced Optical Information Encryption Enabled by Polychromatic and Stimuli‐Responsive Luminescence of Sb‐Doped Double Perovskites

Advanced Science, Год журнала: 2024, Номер 11(24)

Опубликована: Апрель 16, 2024

Abstract The smart materials with multi‐color and stimuli‐responsive luminescence are very promising for next generation of optical information encryption anti‐counterfeiting, but these still scarce. Herein, a multi‐level strategy is developed based on the polychromatic emission Sb‐doped double perovskite powders (SDPPs). Cs 2 NaInCl 6 :Sb, KInCl AgInCl :Sb synthesized through coprecipitation methods exhibit broadband emissions bright blue, cyan, orange colors, respectively. transmitted by specific SDPP encrypted when different SDPPs mixed. confidential can be decrypted selecting corresponding narrowband filter. Then, an quick response (QR) code improved security demonstrated this multi‐channel selection strategy. Moreover, three types water‐triggered switching behaviors. represented erased/recovered simple water spray/drying. Whereas, collected from green channel permanently erased moisture, which fundamentally avoids leakage. Therefore, schemes designed to meet variety requirements. multicolor greatly enrich flexibility encryption, leaps level confidentiality.

Язык: Английский

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Pressure‐Tuned Multicolor Emission of 2D Lead Halide Perovskites with Ultrahigh Color Purity

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(12)

Опубликована: Янв. 19, 2023

The chemical diversity and structural flexibility of lead halide perovskites (LHPs) offer tremendous opportunities to tune their optical properties through internal molecular engineering external stimuli. Herein, we report the wide-range ultrapure photoluminescence emissions in a family homologous 2D LHPs, [MeOPEA]2 PbBr4-4x I4x (MeOPEA=4-methoxyphenethylammonium; x=0, 0.2, 0.425, 0.575, 1) enabled pressure hydrostatic pressure. pressure, induced by C-H⋅⋅⋅π interactions halogen doping/substitution strengthens rigidity give sustained narrow emissions, regulates emission energy, respectively. Further manipulation physical leads tuning from 412 647 nm continuous reversible manner. This work could open up new pathways for developing LHP emitters with ultra-wide color gamut high purity which are highly useful sensing.

Язык: Английский

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Chirality-Dependent Structural Transformation in Chiral 2D Perovskites under High Pressure

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(16), С. 8908 - 8916

Опубликована: Апрель 14, 2023

Chiral perovskites have attracted considerable attention owing to their potential applications in spintronic- and polarization-based optoelectronic devices. However, the structural chirality/asymmetry transfer mechanism between chiral organic ammoniums achiral inorganic frameworks is still equivocal, especially under extreme conditions, as systematic differences been rarely explored. Herein, we successfully synthesized a pair of new enantiomeric perovskite (S/R-3PYEA)PbI4 (3PYEA2+ = C5NH5C2H4NH32+) an (rac-3PYEA)PbI4. Hydrostatic pressure was used, for first time, systematically investigate evolution optical behavior At approximately 7.0 GPa, exhibits chirality-dependent transformation with bandgap "red jump" dramatic piezochromism from translucent red opaque black. Upon further compression, previously unreported chirality-induced negative linear compressibility (NLC) achieved (S/R-3PYEA)PbI4. High-pressure characterizations first-principles calculations demonstrate that pressure-driven homodirectional tilting homochiral ammonium cations strengthens interactions S/R-3PYEA2+ Pb–I frameworks, inducing formation asymmetric hydrogen bonds N–H···I–Pb The enhanced H-bonding break symmetry trigger greater degree in-plane out-of-plane distortion [PbI6]4– octahedra, which are responsible phase transition NLC, respectively. Nevertheless, balanced H-bonds incurred by equal proportions S-3PYEA2+ R-3PYEA2+ counteract force, leading absence transition, spectral jump", NLC

Язык: Английский

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Step forward to light up the future: pressure-induced emission

Science Bulletin, Год журнала: 2023, Номер 68(15), С. 1588 - 1590

Опубликована: Июль 4, 2023

Язык: Английский

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Pressure tailoring electron-phonon coupling toward enhanced yellow photoluminescence quantum yield and piezochromism

Cell Reports Physical Science, Год журнала: 2023, Номер 4(11), С. 101663 - 101663

Опубликована: Окт. 30, 2023

Improvements in yellow light production, a healthy source for the eyes that is also beneficial to biological growth, are needed satisfy practical requirements of solid-state lighting. Here, we report high-brightness emission zero-dimensional lead-free double-perovskite Rb2TeCl6 microcrystals (MCs) driven by high-pressure processing. We note photoluminescence quantum yields (PLQYs) experience significant enhancement an order magnitude upon mild pressure 1.7 GPa. The overlap between ground state and self-trapped reduced pressure-tailored electron-phonon coupling. Accordingly, phonon-assisted non-radiative relaxation inhibited, resulting considerable increase PLQY. Furthermore, marked piezochromism from pale green realized compressed MCs. Our study not only enables as robust tool boost efficiency but provides deep insights into underlying photophysical mechanism, facilitating rational synthesis materials design.

Язык: Английский

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Multiple Energy Transfer Channels in Rare Earth Doped Multi‐Exciton Emissive Perovskites

Advanced Science, Год журнала: 2023, Номер 11(9)

Опубликована: Дек. 21, 2023

Abstract Revealing the energy transfer (ET) process from excitons to rare earth ions in halide perovskites has great guiding value for designing optoelectronic materials. Here, multiple ET channels multi‐exciton emissive Sb 3+ /Nd co‐doped Cs 2 ZrCl 6 are explored comprehend processes. Förster–Dexter theory reveals that sensitizer concentration rather than overlap integral of spectra plays leading function comparison efficiency among host self‐trapped (STEs) and dopant triplet STEs Nd ions. Besides, enables varied color delivery potential as anti‐counterfeiting material. Under X‐ray irradiation, presents a high light yield ≈13300 photons MeV −1 promising imaging ability. This work provides new insight investigating processes potentiality fields imaging.

Язык: Английский

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Unusual Pressure-Induced Self-Trapped Exciton to Free Exciton Transfer in Chiral 2D Lead Bromide Perovskites

ACS Nano, Год журнала: 2024, Номер 18(4), С. 3251 - 3259

Опубликована: Янв. 16, 2024

The phenomenon of pressure-induced emission alterations related to complex excitonic dynamics in 2D lead halide perovskites (LHPs) has gained considerable attention for understanding their structure–property relationship and obtaining inaccessible luminescence under ambient conditions. However, the well-known emissions are limited formation self-trapped excitons (STEs) due structural distortion compression, which goes against advantage highly pure LHPs. Here, detrapping from STEs free (FEs) accompanied by dramatic transition broadband orangish narrow blue been achieved chiral LHPs R- S-[4MeOPEA]2PbBr4, (4MeOPEA = 4-methoxy-α-methylbenzylammonium). combined experimental calculated results reveal that level PbBr6 octahedra S-[4MeOPEA]2PbBr4 exhibits an unusually significant reduction as applied pressure increases, leads decreased electron–phonon coupling energy barrier consequently enables FEs. This work illustrates exciton transfer highlights potential realizing efficient light manipulating via strain engineering.

Язык: Английский

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Time-Resolved Dynamics of Metal Halide Perovskite under High Pressure: Recent Progress and Challenges

The Journal of Physical Chemistry Letters, Год журнала: 2024, Номер 15(6), С. 1623 - 1635

Опубликована: Фев. 2, 2024

Metal halide perovskites have garnered significant attention in the scientific community for their promising applications optoelectronic devices. The application of pressure engineering, a viable technique, has played crucial role substantially improving characteristics perovskites. Despite notable progress understanding ground-state structural changes under high pressure, comprehensive exploration excited-state dynamics influencing luminescence remains incomplete. This Perspective delves into recent advances time-resolved studies photoexcited metal pressure. With focus on intricate interplay between alterations and electronic properties, we investigate electron–phonon interactions, carrier transport mechanisms, influential roles self-trapped excitons (STEs) coherent phonons luminescence. However, challenges persist, notably need more advanced measurement techniques deeper phenomena induced by

Язык: Английский

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