Results 81 to 90 of about 10,754 (283)

Pressure‐Induced Metallization of Lead‐Free Halide Double Perovskite (NH4)2PtI6

Advanced Science, 2022
Metallization has recently garnered significant interest due to its ability to greatly facilitate chemical reactions and dramatically change the properties of materials.
Jiaxiang Wang, Lingrui Wang, Yuqiang Li, Ruijing Fu, Youjia Feng, Duanhua Chang, Yifang Yuan, Han Gao, Sheng Jiang, Fei Wang, Er‐jia Guo, Jinguang Cheng, Kai Wang, Haizhong Guo, Bo Zou   +14 more
doaj   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

A Universal Interfacial Dipole Strategy for Defect Suppression in Inverted Perovskite Solar Cells With Tunable Bandgaps

Advanced Functional Materials, EarlyView.
A 2D heterointerface with a two‐site anchor bridge suppresses nonradiative recombination at the perovskite/C₆₀ interface by reducing surface defects, elevating the Fermi level, and strengthening the electric field. This strategy enables efficient electron extraction, delivering 26.32% efficiency, 1.217 V Voc, excellent operational stability, and broad ...
Chaohui Li, Hyoungwon Park, Fabian Streller, Klaus Götz, Jiwon Byun, Shudi Qiu, Zhangyu Yuan, Jonas Englhard, Andrej Vincze, Zijian Peng, Lirong Dong, Yanxue Wang, Chao Liu, Jingjing Tian, Mingjie Feng, Peichun Liao, Fu Yang, Andreas Späth, Andres Osvet, Thomas Heumueller, Marcus Halik, Silke H. Christiansen, Tobias Unruh, Julien Bachmann, Rainer H. Fink, Ning Li, Larry Lüer, Christoph J. Brabec   +27 more
wiley   +1 more source

Dual‐Function Interface Engineering for δ‐Phase‐Free Crystallization Toward Efficient and Stable FAPbI3 Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
This work presents a dual‐function interface engineering strategy using PEACl to suppress the formation of the non‐perovskite δ‐FAPbI3 phase at the critical SnO2 buried interface. This approach enables the direct crystallization of the photoactive α‐phase, yielding highly efficient and stable rigid (25.6%) and flexible perovskite solar cells with ...
Xiao Wu, Shengyuan Wang, Pok Fung Chan, Zhenyi Ni, Hengkai Zhang, Chun‐Jen Su, Junyi Zhu, Xinhui Lu   +7 more
wiley   +1 more source

Magnetostructural Transition in Spin Frustrated Halide Double Perovskites

Chemistry of Materials
Geometrical frustration in the face-centered-cubic (fcc) lattice presents a fundamental challenge in determining antiferromagnetic order, as the ground state is highly sensitive to subtle differences in competing magnetic interactions and structural symmetry.
Mopoung, K, Tao, Q, Orlandi, F, Mukhuti, K, Ramsamoedj, KS, Singh, U, Khamkaeo, S, Zhang, M, de Dreu, MW, Dilmieva, E, Ammerlaan, ELQN, Ottenbros, T, Wiedmann, S, Boothroyd, AT, Christianen, PCM, Simak, SI, Rosen, J, Gao, F, Buyanova, IA, Chen, WM, Puttisong, Y   +20 more
openaire   +4 more sources

Dual‐Inductive and Programmable Switching: A New Paradigm in Ionic Interface‐Controlled Perovskite Memory

Advanced Functional Materials, EarlyView.
A fully programmable, dual‐inductive switchable halide perovskite memristor is demonstrated through precise BDAI2‐mediated interface engineering. This ion‐modulating layer suppresses stochastic filamentary growth, enabling stable, non‐filamentary switching via dynamic barrier modulation.
So‐Yeon Kim, Juan Bisquert
wiley   +1 more source

Computational Study of Halide Perovskite-Derived A$_2$BX$_6$ Inorganic Compounds: Chemical Trends in Electronic Structure and Structural Stability

, 2017
The electronic structure and energetic stability of A$_2$BX$_6$ halide compounds with the cubic and tetragonal variants of the perovskite-derived K$_2$PtCl$_6$ prototype structure are investigated computationally within the frameworks of density ...
Asta, Mark, Cai, Yao, Chen, Yan, Ding, Hong, Krishnamoorthy, Thirumal, Mathews, Nripan, Mhaisalkar, Subodh G., Sherburne, Matthew, Wong, Lydia H., Xie, Wei   +9 more
core   +1 more source

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

Advanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi, Naseeh Backer Kannanthodi, Alice Nicole Casling, Babar Ali, Samira Lakouraj Mansouri, Alessandro Giuseppe D'aloia, Hossein Cheraghi Bidsorkhi, Maria Sabrina Sarto   +7 more
wiley   +1 more source

A PCBM-Modified TiO2 Blocking Layer towards Efficient Perovskite Solar Cells

International Journal of Photoenergy, 2017
Organometal halide perovskite as a promising absorber in solar cells has caught tremendous attention in the past few years. Herein, a hydrophobic PCBM layer was introduced into planar heterojunction perovskite solar cells to form the TiO2/PCBM double ...
Gang Lu, Fengqin He, Shangzheng Pang, Haifeng Yang, Dazheng Chen, Jingjing Chang, Zhenhua Lin, Jincheng Zhang, Chunfu Zhang   +8 more
doaj   +1 more source

Breakdown of the static picture of defect energetics in halide perovskites: the case of the Br vacancy in CsPbBr3

, 2019
We consider the Br vacancy in CsPbBr3 as a prototype for the impact of structural dynamics on defect energetics in halide perovskites (HaPs). Using first-principles molecular dynamics based on density functional theory, we find that the static picture of
Cohen, Ayala V., Egger, David A., Kronik, Leeor, Rappe, Andrew M.   +3 more
core   +1 more source