Results 51 to 60 of about 28,481 (293)

High thermoelectric figure of merit and thermopower in layered perovskite oxides

, 2019
We predict high thermoelectric efficiency in the layered perovskite La$_2$Ti$_2$O$_7$, based on calculations (mostly ab-initio) of the electronic structure, transport coefficients, and thermal conductivity in a wide temperature range. The figure of merit
Argiolas, Edoardo, Farris, Roberta, Fiorentini, Vincenzo, Maccioni, Maria Barbara   +3 more
core   +1 more source

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Stability and bandgaps of layered perovskites for one- and two-photon water splitting

New Journal of Physics, 2013
Direct production of hydrogen from water and sunlight requires stable and abundantly available semiconductors with well positioned band edges relative to the water red-ox potentials.
Ivano E Castelli, Juan María García-Lastra, Falco Hüser, Kristian S Thygesen, Karsten W Jacobsen   +4 more
doaj   +1 more source

Electronic structures of layered perovskite Sr2MO4 (M=Ru, Rh, and Ir)

, 2006
We investigated the electronic structures of the two-dimensional layered perovskite Sr$_{2}$\textit{M}O$_{4}$ (\textit{M}=4\textit{d} Ru, 4\textit{d} Rh, and 5\textit{d} Ir) using optical spectroscopy and polarization-dependent O 1\textit{s} x-ray ...
Cao, G., Ikeda, S. I., Kim, B. J., Kim, J. -Y., Kim, K. W., Kim, M. W., Lee, Y. S., Maeno, Y., Moon, S. J., Nagai, I., Nakatsuji, S., Noh, T. W., Oh, S. -J., Park, J. -H.   +13 more
core   +1 more source

Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production. [PDF]

, 2020
The protonic ceramic electrochemical cell (PCEC) is an emerging and attractive technology that converts energy between power and hydrogen using solid oxide proton conductors at intermediate temperatures.
Bian, Wenjuan, Ding, Dong, Ding, Hanping, Ding, Yong, Hu, Boxun, Jiang, Chao, Orme, Christopher J, Singh, Prabhakar, Wang, Lucun, Wu, Wei, Zhang, Yunya   +10 more
core   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Excitonic states and structural stability in two-dimensional hybrid organic-inorganic perovskites

Journal of Science: Advanced Materials and Devices, 2019
Two-dimensional (2D) perovskites are a new class of functional materials that may find applications in various technologically important areas. Due to the better moisture and illumination stability, layered perovskites can be the next generation of ...
Yulia Lekina, Ze Xiang Shen
doaj   +1 more source

Butanediammonium Salt Additives for Increasing Functional and Operando Stability of Light-Harvesting Materials in Perovskite Solar Cells

Nanomaterials, 2022
Organic diammonium cations are a promising component of both layered (2D) and conventional (3D) hybrid halide perovskites in terms of increasing the stability of perovskite solar cells (PSCs).
Natalia N. Udalova, Aleksandra K. Moskalenko, Nikolai A. Belich, Pavel A. Ivlev, Andrey S. Tutantsev, Eugene A. Goodilin, Alexey B. Tarasov   +6 more
doaj   +1 more source

A New Iron Pnictide Oxide (Fe2As2)(Ca5(Mg,Ti)4Oy) and a New Phase in Fe-As-Ca-Mg-Ti-O system

, 2012
A new layered iron arsenide oxide (Fe2As2)(Ca5(Mg,Ti)4Oy) and its structural derivative were found in the Fe-As-Ca-Mg-Ti-O system. The crystal structure of (Fe2As2)(Ca5(Mg,Ti)4Oy) is identical to that of (Fe2As2)(Ca5(Sc,Ti)4Oy), which was reported in our
A. Iyo, C.H. Lee, Chen, Deng, Guo, H. Eisaki, H. Kito, Hsu, K. Kihou, Kamihara, Kamihara, Kito, Lee, Miyazawa, Ogino, Ogino, Ogino, P.M. Shirage, Rotter, Shannon, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Tapp, Tegel, Zhu, Zhu   +36 more
core   +1 more source

Nanoscale Mapping of Plasmonic Charge Transport in Nano‐Resonators Based on Resistive Switching Materials

Advanced Functional Materials, EarlyView.
In this strategy, a conductive nano‐probe is employed to induce nanoscale phase transitions and map the nanoscale conductivity and trap density of GST films. By utilizing the contrasting properties of phase‐change states, nano‐resonators are fabricated that exhibit plasmonic conduction and dramatically different transport characteristics.
Sunwoo Bang, Seunghyo Park, Shashank Shekhar, Yuhyeon Oh, Seunghun Hong   +4 more
wiley   +1 more source