Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Ferroelectric materials have important applications in transduction, data storage, and nonlinear optics. Inorganic ferroelectrics such as lead zirconate titanate possess large polarization, though they are rigid and brittle. Ferroelectric polymers are light weight and flexible, yet their polarization is low, bottlenecked at 10 μC cm. Here we show poly(vinylidene fluoride) nanocomposite with only 0.94% of self-nucleated CHNHPbBr nanocrystals exhibits anomalously large polarization (~19.6 μC cm) while retaining superior stretchability and photoluminance, resulting in unprecedented electromechanical figures of merit among ferroelectrics. Comprehensive analysis suggests the enhancement is accomplished via delicate defect engineering, with field-induced Frenkel pairs in halide perovskite stabilized by the poled ferroelectric polymer through interfacial coupling. The strategy is general, working in poly(vinylidene fluoride-co-hexafluoropropylene) as well, and the nanocomposite is stable. The study thus presents a solution for overcoming the electromechanical dilemma of ferroelectrics while enabling additional optic-activity, ideal for multifunctional flexible electronics applications.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11087492 | PMC |
| http://dx.doi.org/10.1038/s41467-024-48348-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Theoretical study of Lewis base passivation of p-type surface defects in I-Br mixed-halide tin perovskites.
J Chem Phys
September 2025
Quantum Chemistry Division, Yokohama City University, Seto 22-2, Kanazawa-Ku, Yokohama 236-0027, Kanagawa, Japan.
Perovskite-silicon tandem solar cells have attracted considerable attention owing to their high power conversion efficiency (PCE), which exceeds the limits of single-junction devices. This study focused on lead-free tin-based perovskites with iodine-bromine mixed anions. Bromide perovskites have a wide bandgap; therefore, they are promising light absorbers for perovskite-silicon tandem solar cells.
View Article and Find Full Text PDFMechanisms of Enhanced Efficiency and Stability in Perovskite Luminescence via Rb Interstitial Doping.
J Phys Chem Lett
September 2025
Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China.
Metal halide perovskites have garnered significant attention due to their exceptional photoelectric properties. The alkali metal doping strategy has been demonstrated to effectively modulate grain size, control crystallization kinetics, and adjust band gap characteristics in perovskite. This study employs the first-principles calculations to reveal that the selection of alkali metal species and their corresponding doping methodologies exert markedly distinct influences on both the electronic properties and ion migration kinetics of CsPbBr perovskites.
View Article and Find Full Text PDFElectric Field Influences on the Carrier Transport Characteristics of an Individual CsPbBr Microplate.
ACS Appl Mater Interfaces
September 2025
National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
For optoelectronic devices based on lead-halide perovskites and other semiconductors, a comprehensive understanding of the electric field influences on the carrier transport characteristics is critical to the optimization of their practical performances. To fulfill this challenging goal, here we have employed photoluminescence spatial image and transient absorption microscopy measurements on an individual CsPbBr microplate biased at external voltages in an Au/CsPbBr/Au device. At the subpicosecond time scale, some photogenerated excitons are dissociated into free electrons and holes that drift toward the electrodes to leave behind unfilled defect sites, which are capable of scattering the residual excitons to yield a reduced diffusion coefficient.
View Article and Find Full Text PDFImmersed Halide Perovskite-Based Electrochemical Cells for Stable Solar Water Splitting: Achievements, Opportunities, and Prospects.
Adv Mater
September 2025
Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
Recently, halide perovskite materials have attracted significant research interest in photoelectrochemical cells as promising photoabsorbers due to their superior optoelectronic properties. However, their instability under environmental conditions remains a major obstacle to the development of stable water-splitting devices. This review thoroughly examines the growing array of encapsulation strategies that have accelerated the integration of perovskite materials into water-splitting systems.
View Article and Find Full Text PDFLevetiracetam-Assisted Perovskite Crystallization and Tripartite Lead Iodide Reduction in Perovskite Solar Cells.
Adv Mater
September 2025
Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, 430072, China.
Sequential deposition technique is widely used to fabricate perovskite films with large grain size in perovskite solar cells (PSCs). Residual lead halide (PbI) in the perovskite film tends to be decomposed into metallic lead (Pb) under long-term heating or light soaking. Here, a chiral levetiracetam (LEV) dopant containing α-amide and pyrrolidone groups is introduced into the PbI precursor solution.
View Article and Find Full Text PDF