基于CsPbIBr2的全无机半透明器件的光伏性能与热 致变色性能

Zhao, Yajie; Jiang, Chenxi; Zheng, Jieyuan; Chen, Lirong; Zheng, Yang; Xu, Gang; Xiao, Xiudi

doi:10.1007/s40843-022-2450-8

Cited by 4 publications

(1 citation statement)

References 37 publications

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“…As compared with the pristine high-T state, the low-T phase film exhibited comparably compact morphology without any pinholes, and the atomic ratio of Cs/Pb/I/Br nearly remained unchanged in addition to a significant weight increase of oxygen atoms, implying that the CsPbIBr 2 film can maintain stable morphology and stoichiometry during the phase conversion process. It is worth noting that the processing time of MT is an extremely essential parameter to guarantee sufficient phase conversion without sacrificing the coverage rate; otherwise, an overlong processing time under a high humidity condition (RH = 90%) would severely crack the film surface . The short-term exposure to high humidity results in the occurrence of efficient electron transfer from water molecules to the perovskite lattice, which would trigger the distortion of the [PbX 6 ] 4– octahedral framework and strengthen the defect-induced localized stress among perovskite grains, thus leading to the phase conversion .…”

Section: Resultsmentioning

confidence: 99%

Reversible Thermochromic Perovskite-Based Dynamic Optical Encryption and Holographic Inference

Hu,

Zhu,

et al. 2024

ACS Photonics

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Perovskites have attracted extensive attention in the field of nanophotonics with a plethora of applications owing to their high optical constants, tunable band gap, solution processability, and large optical tunability. In this work, we demonstrate perovskite-based dynamic photonic devices for applications of optical encryption and holographic inference by femtosecond laser patterning all-inorganic mixed halide perovskite CsPbIBr 2 with thermochromic features. During one cycle of moisture and evaporation treatment, the CsPbIBr 2 perovskite pattern undergoes a reversible conversion between a bright red (high-T) phase and a colorless transparent (low-T) phase, accompanied by significant optical state changes, resulting in on/ off functionality switch. At a low-T state, the encoded fluorescent or holographic information is hidden, and the function of optical inference is invalid. Conversely, at a high-T state, the encrypted information is reconstructed, and the ability of holographic inference is reactivated. Moreover, the perovskite photonic devices exhibit outstanding operating stability after 10 repeated conversion cycles without prominent performance degradation. Such perovskite photonic devices not only provide a novel approach to realize dynamic control of the desired optical functions but also have huge applicable potential for diverse optical applications, such as optical encryption, optical anticounterfeiting, and optical artificial intelligence.

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Section: Resultsmentioning

confidence: 99%

Reversible Thermochromic Perovskite-Based Dynamic Optical Encryption and Holographic Inference

Hu,

Zhu,

et al. 2024

ACS Photonics

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Initializing Compression Stress to Stabilize the Phase Homogeneity in Bifacial Semitransparent Perovskite Solar Cells

Wu,

Wang,

et al. 2024

Advanced Energy Materials

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Semitransparent perovskite solar cells (ST‐PSCs) hold great promise for various commercial applications, including building integrated photovoltaics and tandem solar cells. The all‐inorganic perovskite, known for its outstanding optical transparency and thermal stability, emerges as a top contender for ST‐PSCs. However, challenges persist due to phase segregation, which hampers charge carrier transport and operational stability. In this study, an approach is proposed to address these challenges by employing strain engineering to reconstruct the perovskite texture, eliminating inhomogeneities within the perovskite film. The crucial role of compressive strain in stabilizing lattice rigidity and suppressing light‐induced ion migration is demonstrated. Furthermore, a transparent light‐harvesting architecture is devised utilizing a sandwiched layer of gold embedded between MoO3. This design enhances power generation by efficiently harnessing incident light from both the front and rear panel surfaces. Therefore, bifacial ST‐PSCs achieve an equivalent efficiency (ηeq) of 13.97% with an average visible light transmittance of 41.58%, yielding an outstanding light utilization efficiency of up to 5.8%. This research not only advances the understanding of perovskite material phase‐segregation behavior but also introduces an effective strategy for enhancing optical gain without compromising the semitransparent characteristics.

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Stable and rapid thermochromic reversibility in acene alkylamine intercalated layered hybrid perovskites

Cao,

Wang,

Zhang

et al. 2023

Materials Today Communications

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基于CsPbIBr2的全无机半透明器件的光伏性能与热致变色性能

Cited by 4 publications

References 37 publications

Reversible Thermochromic Perovskite-Based Dynamic Optical Encryption and Holographic Inference

Reversible Thermochromic Perovskite-Based Dynamic Optical Encryption and Holographic Inference

Initializing Compression Stress to Stabilize the Phase Homogeneity in Bifacial Semitransparent Perovskite Solar Cells

Stable and rapid thermochromic reversibility in acene alkylamine intercalated layered hybrid perovskites

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基于CsPbIBr2的全无机半透明器件的光伏性能与热 致变色性能

Cited by 4 publications

References 37 publications

Reversible Thermochromic Perovskite-Based Dynamic Optical Encryption and Holographic Inference

Reversible Thermochromic Perovskite-Based Dynamic Optical Encryption and Holographic Inference

Initializing Compression Stress to Stabilize the Phase Homogeneity in Bifacial Semitransparent Perovskite Solar Cells

Stable and rapid thermochromic reversibility in acene alkylamine intercalated layered hybrid perovskites

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基于CsPbIBr2的全无机半透明器件的光伏性能与热致变色性能