Results 61 to 70 of about 466 (242)

Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production

Advanced Functional Materials, EarlyView.
Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons, Rhys J. Bourhill, Ewan McQueen, Sam D. Harding, Krzysztof Pawlak, Thomas Fellowes, Harry W. Capps, Alexander J. Cowan, Andrew I. Cooper, Adrian M. Gardner, Martijn A. Zwijnenburg, Reiner Sebastian Sprick   +11 more
wiley   +1 more source

El telurio en la era tecnológica actual

Revista de Química, 2019
El telurio, Te, es un elemento químico con una abundancia escasa en la Tierra. Su importancia en la actual era tecnológica le ha dado una preponderancia por sus propiedades en óptica no lineal y en el desarrollo de dispositivos con aplicaciones en ...
Edward E. Avila
doaj  

Relaxation and tilting of single and double layer structures of AlGaSb/GaSb-LPE studied by high resolution x-ray diffraction

Materials Research Express, 2020
Epitaxial AlGaSb double-layer structures grown on GaSb (001) substrates by Liquid Phase Epitaxy (LPE) were analyzed by high-resolution x-ray diffraction (HRXRD).
Primavera Lopez-Salazar, Gabriel Juarez-Diaz, Javier Martinez-Juarez, Martha Virginia Sosa-Rivadeneyra, Jorge I Contreras-Rascón, Carlos Palomino-Jimenez, José Alberto Luna-Lopez   +6 more
doaj   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

MODÉLISATION CONCEPTUELLE D´UNE UNITÉ DE FABRICATION MICROÉLECTRONIQUE

Revista EIA, 2007
La modélisation des systèmes de production est difficile en raison du nombre et de la diversité des paramètres à prendre en compte et de la complexité des relations entre ces paramètres.
Jairo R Montoya-Torres
doaj  

Ultrahigh‐Yield, Multifunctional, and High‐Performance Organic Memory for Seamless In‐Sensor Computing Operation

Advanced Functional Materials, EarlyView.
Molecular engineering of a nonconjugated radical polymer enables a significant enhancement of the glass transition temperature. The amorphous nature and tunability of the polymer, arising from its nonconjugated backbone, facilitates the fabrication of organic memristive devices with an exceptionally high yield (>95%), as well as substantial ...
Daeun Kim, Jaehyoung Ko, Namju Kim, Quynh H. Nguyen, Hoyeon Lee, Joohwan Eo, Seongeon Jin, Ji Eon Kwon, Seung‐Yeol Jeon, Youngdo Jeong, Dongseok Kwon, Sung Gap Im, Sanghan Lee, Byung Chul Jang, Yongho Joo   +14 more
wiley   +1 more source

Esquemas conceptuales de estudiantes de secundaria sobre el comportamiento Físico de semiconductores extrínsecos

Caderno Brasileiro de Ensino de Física, 2005
En este trabajo, exponemos la necesidad de emprender investigaciones didácticas orientadas a integrar las nociones básicas de Física de Semiconductores en el curriculum de Física y Química de Secundaria.
Luis Rosado, Antonio García- Carmona
doaj  

In Situ Study of Resistive Switching in a Nitride‐Based Memristive Device

Advanced Functional Materials, EarlyView.
In situ TEM biasing experiment demonstrates the volatile I‐V characteristic of MIM lamella device. In situ STEM‐EELS Ti L2/L3 ratio maps provide direct evidence of the oxygen vacancies migrations under positive/negative electrical bias, which is critical for revealing the RS mechanism for the MIM lamella device.
Di Zhang, Rohan Dhall, Matthew M. Schneider, Cun Li, Chengyu Song, Sundar Kunwar, Hongyi Dou, Natanii R. Yazzie, Henry Tran, Daniel Appuing, Jim Ciston, Nicholas G. Cucciniello, Pinku Roy, Michael T. Pettes, John Watt, Winson Kuo, Haiyan Wang, Ye Cao, Rodney J. McCabe, Aiping Chen   +19 more
wiley   +1 more source

Reducing Open‐Circuit Voltage Losses in Wide‐Bandgap FAPbBr3 Perovskite Solar Cells for Continuous Unassisted Light‐Driven Water Splitting

Advanced Functional Materials, EarlyView.
The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini, Daniël Grosfeld, Bruno Branco, Guus J. W. Aalbers, Lana M. Kessels, Willemijn H. M. Remmerswaal, Nicolas Daub, Kunal Datta, Martijn M. Wienk, René A. J. Janssen   +9 more
wiley   +1 more source

Producción fotocatalítica de hidrógeno empleando semiconductores modificados con nanopartículas metálicas

Mundo Nano
Este trabajo de revisión se centra en la producción fotocatalítica de hidrógeno empleando agentes de sacrificio y semiconductores modificados con nanopartículas metálicas.
David Ramírez Ortega, Diana Clemencia Guerrero Araque, Próspero Acevedo Peña, Rodolfo Zanella   +3 more
doaj   +1 more source