Chiral 2D Halide Perovskites for Piezoelectric Energy Harvesting and Ultrasound Detection DOI Open Access
Hongtao Li, Xiangyong Zhao,

Hai‐Run Yang

et al.

European Journal of Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

Abstract Hybrid organic‐inorganic perovskite (HOIPs) has emerged as a great promising class of piezoelectric materials due to their solution processability, ease structural adjustment, and high piezoelectricity. However, date, energy application ultrasound detection been relatively unexplored. Here, pair chiral two‐dimensional (2D) HOIPs, R ‐/ S ‐[3MeOPEA] 2 PbBr 4 (3MeOPEA=1‐(3‐Methoxyphenyl) ethylamine), were synthesized, the structure, photoluminescence properties are reported. Our results demonstrate these exhibit consistent broad PL peaks under 360 nm excitation density functional theory (DFT) calculations reveal direct bandgap characteristic. Moreover, incorporation chirality into structure ‐ endows them with significant properties. 5 wt% /PDMS (polydimethylsiloxane) composite film can generate maximum open‐circuit voltages ( V oc ) 1.98 short circuit currents I sc 0.50 μA upon loading force N at 10 Hz. Additionally, device sensitively detect waves underwater varying distances 3, 6, 9 mm, corresponding peak‐to‐peak voltage p‐p responses 52.3 mV, 41.1 31.7 respectively. research broadens potential applications multifunctional 2D in fields harvesting ultra‐sound detection.

Language: Английский

Ultra-Precise Sensing in PVDF Piezoelectric Nanogenerator with Self-Oriented Nanocrystals via Multi-Level Counter-Chain Relaxation Strategy DOI
Haoran Pei, Jiayu Tan, Zilin Peng

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110847 - 110847

Published: March 1, 2025

Language: Английский

Citations

0
Comparative Study of the Electrorheological Properties of Various Halide Perovskites DOI Creative Commons
Suk Jekal,

Hyuntae Choi,

Zambaga Otgonbayar

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Although perovskite-structured materials have primarily been widely employed in solar cell applications, limited studies conducted the field of electrorheology (ER). In this study, various halide perovskite materials, including FAPbBr3, FAPbI3, MAPbBr3, MAPbI3, CsPbBr3, and CsPbI3 were synthesized for first time to evaluate their applicability ER time. Initially, morphological chemical properties these characterized confirm successful formation structures. addition, as-synthesized dispersed silicone oil (3.0 wt %) suitability as dispersants fluids. Among these, CsPbI3-based fluid exhibited optimal dielectric greatest dispersion stability systems examined. demonstrated highest performance, achieving a shear stress 99.4 Pa, owing synergistic effects its intrinsic rod-like structure properties, which promoted polarization. The aspect ratios rods further controlled by modifying synthetic process, resulting generation both shorter longer rods. Notably, fluids based on via hydrothermal method yielded structures with high ratio 20, leading an enhanced activity 128.0 Pa. These results highlight potential use applications.

Language: Английский

Citations

0
Suppressing Deprotonation to Extend the Shelf Life of Perovskite Precursor Solutions and Enhance the Stability and Efficiency of Perovskite Solar Cells DOI

Yanzhuo Gou,

Weideren Dai,

Xian Xie

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Abstract Amid the rapid advancement of formamidine (FA)‐based perovskite solar cells (PSCs), methylammonium chloride (MACl) has emerged as a pivotal molecule, widely recognized in achieving high‐efficiency PSCs. However, precursor solution (PPS), particularly after prolonged storage, deprotonated MA⁺ (MA 0 ) undergoes cationic addition with FA⁺, leading to relative depletion FA⁺ and reduction crystalline phase purity. Herein, using Piperazine‐2‐carboxylic acid dihydrochloride (PCADCl) inhibit deprotonation by forming strong two‐point hydrogen bonds between piperazine's amine groups proton (H⁺) MA⁺is proposed, thereby extending shelf life PPS. Furthermore, COOH PCADCl furtherly suppress while promoting coordination unbound Pb 2+ , reducing film defects improving purity phase. Additionally, energy level arrangement PSCs is improved. Benefiting from this strategy, PSC fabricated modified PPS achieves an impressive efficiency 25.56% retains 96% its initial performance aging for 20 days. Moreover, unencapsulated device 97% over 1300 h. This work significantly advances process development scientific research, representing crucial step toward large‐scale production commercialization

Language: Английский

Citations

0
High-Efficiency Organic Mechanophosphorescence from A Phenoselenazine Phosphor for Multiple Applications DOI

Meijuan Ding,

Meng Zhang,

Anqi Lv

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Mechanoluminescence (ML) materials with phosphorescent characteristics hold significant potential for applications in pressure sensing and material damage inspection. However, currently reported mechanophosphorescence (MP) suffer from low luminescence efficiency insufficient brightness. Herein, we report a piezoelectric material, p-BPM, an exceptionally high phosphorescence of 61.4%, which is the highest value among pure organic MP materials. Benefiting its excellent ML performance, have developed display device using crystals that allow clear observation written letter paths (letters M L), promising prospects pressure-sensitive display. Amazingly, also observed produce bright ultrasound induced medium at ultrasonic operating frequency (40 kHz). The composite films crystal poly(butylene adipate-co-terephthalate) (PBAT) polymer exhibit tensile strength while maintaining effective MP. show good energy harvesting properties maximum open-circuit voltage 0.47 V short-circuit current 0.046 μA, demonstrating promise precise sonic location. This work will facilitate development highly efficient materials, expanding stress-monitoring, imaging, marine robotics.

Language: Английский

Citations

0
Energy harvesting and human motion sensing of a 2D piezoelectric hybrid organic–inorganic perovskite DOI Creative Commons
Lijun Ji, Chen Zhao, Tianyi Yang

et al.

APL Materials, Journal Year: 2024, Volume and Issue: 12(9)

Published: Sept. 1, 2024

Two-dimensional (2D) hybrid organic–inorganic perovskites (HOIPs) have garnered plentiful attention as a result of their exceptional structural flexibility and multiple applications. In this study, we present 2D HOIP (CHA)2PbBr4 (CHA = cyclohexylamine), for its potential applications in piezoelectricity, such strain energy sensing harvesting. Flexible composite films (CHA)2PbBr4/PDMS (PDMS polydimethylsiloxane) with sequence weight ratios (0, 5, 10, 15, 20 wt %) were fabricated to analyze the harvesting properties. Experimental results demonstrated that device 15% composition exhibited most optimized performance harvesting, producing peak magnitude output voltage 11.6 V, short-circuit current 0.38 µA, power density 6.77 µW/cm2, along notable stability exceeding 4000 cycles. Furthermore, high sensitivity monitoring many varieties human movements, finger bending tapping, elbow bending, gentle foot stamping. The findings study indicate holds significant use flexible intelligent wearable devices.

Language: Английский

Citations

0
Chiral 2D Halide Perovskites for Piezoelectric Energy Harvesting and Ultrasound Detection DOI Open Access
Hongtao Li, Xiangyong Zhao,

Hai‐Run Yang

et al.

European Journal of Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

Abstract Hybrid organic‐inorganic perovskite (HOIPs) has emerged as a great promising class of piezoelectric materials due to their solution processability, ease structural adjustment, and high piezoelectricity. However, date, energy application ultrasound detection been relatively unexplored. Here, pair chiral two‐dimensional (2D) HOIPs, R ‐/ S ‐[3MeOPEA] 2 PbBr 4 (3MeOPEA=1‐(3‐Methoxyphenyl) ethylamine), were synthesized, the structure, photoluminescence properties are reported. Our results demonstrate these exhibit consistent broad PL peaks under 360 nm excitation density functional theory (DFT) calculations reveal direct bandgap characteristic. Moreover, incorporation chirality into structure ‐ endows them with significant properties. 5 wt% /PDMS (polydimethylsiloxane) composite film can generate maximum open‐circuit voltages ( V oc ) 1.98 short circuit currents I sc 0.50 μA upon loading force N at 10 Hz. Additionally, device sensitively detect waves underwater varying distances 3, 6, 9 mm, corresponding peak‐to‐peak voltage p‐p responses 52.3 mV, 41.1 31.7 respectively. research broadens potential applications multifunctional 2D in fields harvesting ultra‐sound detection.

Language: Английский

Citations

0