Results 61 to 70 of about 7,426 (305)

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Understanding the morphotropic phase boundary of perovskite solid solutions as a frustrated state [PDF]

, 2020
Perovskite solid solutions that have a chemical composition A(C_xD_(1−x))O₃ with transition metals C and D substitutionally occupying the B site of a perovskite lattice are attractive in various applications for their dielectric, piezoelectric and other ...
Bhattacharya, Kaushik, Li, Jiangyu, Teh, Ying Shi   +2 more
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Phase relations in the Eu2O3-Fe2O3 system at 1300 and 1400 °C [PDF]

Processing and Application of Ceramics
Phase relations in the Eu2O3-Fe2O3 system at 1300 and 1400°C were studied in the whole concentration range by X-ray diffraction and scanning electron microscopy. The samples were prepared with a concentration step of 1 to 5mol%.
Chudinovych Olga V., Samelyuk Anatoliy V., Korichev Serhiy F., Flis Victor S.   +3 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

New cathode material La2/3Cu3Ti4 – xFexO12 – δ for solid oxide fuel cell: Synthesis and electrical conductivity [PDF]

Электрохимическая энергетика
Copper lanthanum titanate La2/3Cu3Ti4−xFexO12−δ x = 0–1 was doped with Fe3+ cations. The diagram of the dependence of the tolerance factor on the relative electronegativity of cations for all studied compositions was represented ...
Pantyukhina, Marina Ivanovna, Dunyushkina, Liliya Adibovna   +1 more
doaj   +1 more source

Structural, Thermal and Functional Properties of a Hybrid Dicyanamide-Perovskite Solid Solution

Crystals, 2022
In Solid-State Chemistry, a well-known route to obtain new compounds and modulate their properties is the formation of solid solutions, a strategy widely exploited in the case of classical inorganic perovskites but relatively unexplored among emergent ...
Javier García-Ben, Jorge Salgado-Beceiro, Ignacio Delgado-Ferreiro, Pedro Dafonte-Rodríguez, Jorge López-Beceiro, Ramón Artiaga, Socorro Castro-García, Manuel Sánchez-Andújar, Juan Manuel Bermúdez-García, María Antonia Señarís-Rodríguez   +9 more
doaj   +1 more source

Rationally Designed Bilayer Passivation Strategy for High‐Performance Vacuum‐Processed Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A bilayer “Anchor‐and‐Seal” passivation strategy using EDAI2 and 4MeO‐PEAI effectively mitigates surface defects in vacuum‐processed perovskite films through synergistic hydrogen bonding and Lewis base coordination. This approach optimizes interfacial energy alignment and suppresses non‐radiative recombination, enabling vacuum‐deposited p‐i‐n ...
Mohammadhossein Kohan, Sang‐Heon Lee, Jaswinder Singh, Sung‐Nam Kwon, Seok‐In Na   +4 more
wiley   +1 more source

Two-step perovskite crystallization assisted with F-containing additives enables over 23% efficiency in perovskite solar cells

, 2023
The two-step preparation of perovskite solar cells (PSCs) has attracted the interest of many researchers because this method can better control the nucleation and growth of perovskite thin films.
Xueqing Xu, Zhuoneng Bi, Li, Gang, Deng, Qiting, Zhenlin Zhang, Zhiwei Ren, Luo, Shizi, Liu, Jieling, Zhang, Zhenlin, Jin Han, Ren, Zhiwei, Yupeng Zheng, Shizi Luo, Bi, Zhuoneng, Xu, Gang, Yanqing Zhu, Zheng, Yupeng, Shengzhong(Frank) Liu, Liu, Shengzhong (Frank), Han, Jin, Jieling Liu, Shuguang Cao, Xu, Xueqing, Chuangjin Liu, Cao, Shuguang, Zhu, Yanqing, Gang Xu, Gang Li, Qiting Deng, Liu, Chuangjin, Wang, Kai, Kai Wang   +31 more
core   +1 more source

Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN

Advanced Functional Materials, EarlyView.
Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk, Danis I. Badrtdinov, Kenji Watanabe, Takashi Taniguchi, Cyrus E. Dreyer, Malte Rösner, Maciej Koperski   +6 more
wiley   +1 more source

Investigation of CaIr1-xPtxO3 and CaIr0.5Rh0.5O3 : structural properties, physical properties and stabilising conditions for post-perovskite oxides [PDF]

, 2011
Our understanding of the nature of Earth’s D” region was changed significantly by a recent finding by Murakami et al. (2004), who revealed a phase transition from perovskite to post-perovskite structure in MgSiO3 at about 125 GPa and 2500 K ...
Hirai, Shigeto
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