Significant photostrictive response in lead‐free Bi0.5Na0.5TiO3 ceramics under visible light illumination

Fang, Hanliang; Chen, Chen; Zhang, Faqiang; Cao, Minghe; Yi, Zhiguo

doi:10.1111/jace.17812

Cited by 8 publications

(4 citation statements)

References 39 publications

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“…For example, Bi 0.5 Na 0.5 TiO 3 exhibits a remarkable photostriction response under visible light irradiation. 15 A giant light-induced deformation was recently observed in MAPbI 3 with the measured linear strain of approximately 0.72−0.43% under 532 nm illumination. 16 Some studies have shown that the photostriction effect shows an important impact on the physical properties of perovskite materials, 17 e.g., it can improve the charge separation and hinder the subsequent recombination in perovskite materials.…”

Section: Introductionmentioning

confidence: 87%

“…The photostriction effects were also widely found in perovskite materials. For example, Bi 0.5 Na 0.5 TiO 3 exhibits a remarkable photostriction response under visible light irradiation . A giant light-induced deformation was recently observed in MAPbI 3 with the measured linear strain of approximately 0.72–0.43% under 532 nm illumination .…”

Section: Introductionmentioning

confidence: 91%

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Studies on the Light-Induced Phase Transition of CsPbBr₃ Metal Halide Perovskite Materials

et al. 2023

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We investigate the internal mechanism of the light-induced phase transition of CsPbBr3 perovskite materials via density functional theory simulations. Although CsPbBr3 tends to appear in the orthorhombic structure, it can be changed easily by external stimulus. We find that the transition of photogenerated carriers plays the decisive role in this process. When the photogenerated carriers transit from the valence band maximum to conduction band minimum in the reciprocal space, they actually transit from Br ions to Pb ions in the real space, which are taken away by the Br atoms with higher electronegativity from Pb atoms during the initial formation of the CsPbBr3 lattice. The reverse transition of valence electrons leads to the weakening of bond strength, which is proved by our calculated Bader charge, electron localization function, and integral value of COHP results. This charge transition releases the distortion of the Pb–Br octahedral framework and expands the CsPbBr3 lattice, providing possibilities to the phase transition from the orthorhombic structure to tetragonal structure. This phase transition is a self-accelerating positive feedback process, increasing the light absorption efficiency of the CsPbBr3 material, which is of great significance for the widespread promotion and application of the photostriction effect. Our results are helpful to understand the performance of CsPbBr3 perovskite under a light irradiation environment.

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Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 91%

Studies on the Light-Induced Phase Transition of CsPbBr₃ Metal Halide Perovskite Materials

et al. 2023

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“…Similar variation is observed for time of decay ( τ decay ). Both τ rise and τ decay estimated for Mg 3 V 2 O 8 ceramic are much faster than organic polymers and are comparable to that of ferroelectric materials 2,5,29,30 …”

Section: Resultsmentioning

confidence: 58%

“…Both τ rise and τ decay estimated for Mg 3 V 2 O 8 ceramic are much faster than organic polymers and are comparable to that of ferroelectric materials. 2,5,29,30 As light is associated with the thermal effect, the influence of the photothermal effect on the photostriction is primarily required to determine any influence of thermal expansion in the photostrictive response of Mg 3 V 2 O 8 ceramics. Therefore, variation in the temperature of the sample with illumination was monitored with the high precision thermal image camera, and corresponding to maximum temperature and beyond, the thermal expansion curve of the Mg 3 V 2 O 8 ceramics is recorded.…”

Section: Resultsmentioning

confidence: 99%

High photostrictive efficiency of Mg₃V₂O₈ ceramics under visible light illumination

Boda

Chen

et al. 2023

J Am Ceram Soc.

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The materials showing significant photostrictive effect under visible light are of great interest for the development of advanced micro‐optomechanical systems (MOMS). Till date, ferroelectrics have remained the most widely investigated materials for photostriction, but due to wide bandgap their efficiency remains poor in visible light. Herein, magnesium orthovandate (Mg3V2O8) ceramics, showing a bandgap of 2.43 eV, is demonstrated for significant photostrictive efficiency (η) under visible light. In the illumination of laser 655 nm, it shows η = 1.5 × 10−11 m3/W, the highest efficiency ever reported for any ceramic under visible light, and under laser405 nm, shows η = 1.0 × 10−11 m3/W, the efficiency higher than most of the reported materials in similar illumination conditions. The in situ X‐ray diffraction patterns collected under external laser illumination in conjunction with power dependent Raman spectroscopy indicates that the photostriction of Mg3V2O8 ceramics is attributed to light induced distortion of its VO4 tetrahedrons and MgO6 octahedrons. Whilst, comparative analysis of Raman modes identified experimentally and modes calculated by density functional theory reveals that the light‐triggered electron–phonon resonating interactions and light‐induced phase transition are the most likely origin of large polyhedral distortions and hence higher value of η at specific light intensity of lasers 655 and 405 nm, respectively. These results show considerable advantage of Mg3V2O8 ceramics for MOMS and other light‐driven applications.

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Photodielectric and photochromic properties of (K0.5Na0.5)NbO3 lead-free ceramics modified by (Ca2/3Mg1/3)(Zn1/3Nb2/3)O3

Feng,

Yang,

et al. 2024

Appl. Phys. A

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Significant photostrictive response in lead‐free Bi_0.5Na_0.5TiO₃ ceramics under visible light illumination

Cited by 8 publications

References 39 publications

Studies on the Light-Induced Phase Transition of CsPbBr₃ Metal Halide Perovskite Materials

Studies on the Light-Induced Phase Transition of CsPbBr₃ Metal Halide Perovskite Materials

High photostrictive efficiency of Mg₃V₂O₈ ceramics under visible light illumination

Photodielectric and photochromic properties of (K0.5Na0.5)NbO3 lead-free ceramics modified by (Ca2/3Mg1/3)(Zn1/3Nb2/3)O3

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Significant photostrictive response in lead‐free Bi0.5Na0.5TiO3 ceramics under visible light illumination

Cited by 8 publications

References 39 publications

Studies on the Light-Induced Phase Transition of CsPbBr3 Metal Halide Perovskite Materials

Studies on the Light-Induced Phase Transition of CsPbBr3 Metal Halide Perovskite Materials

High photostrictive efficiency of Mg3V2O8 ceramics under visible light illumination

Photodielectric and photochromic properties of (K0.5Na0.5)NbO3 lead-free ceramics modified by (Ca2/3Mg1/3)(Zn1/3Nb2/3)O3

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Significant photostrictive response in lead‐free Bi_0.5Na_0.5TiO₃ ceramics under visible light illumination

Studies on the Light-Induced Phase Transition of CsPbBr₃ Metal Halide Perovskite Materials

Studies on the Light-Induced Phase Transition of CsPbBr₃ Metal Halide Perovskite Materials

High photostrictive efficiency of Mg₃V₂O₈ ceramics under visible light illumination