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Displaying 151 - 175 of 550

Thermal Pulse for Rapid Surface Processing of Solid-State Electrolytes

November 10, 2018
Author(s)
Chengwei Wang, Hua Xie, Weiwei Ping, Jiaqi Dai, Jamie Weaver, Guolin Feng, Yonggang Yao, Shuaiming He, Howard Wang, Karen Gaskell, Liangbing Hu
Surface contamination and degradation are two main issues leading to performance decay of ceramic-based solid-state electrolytes (SSEs). The typical strategies used to clean surface contaminants and restore ceramic materials involve mechanical polishing or

Modulated Photocurrent Measurements in Double Junction Solar Cells

November 4, 2018
Author(s)
Nicolas Marquez Peraca, Behrang Hamadani
Frequency dependent external quantum efficiency (EQE) measurements were performed on double junction solar cells by a custom-designed system consisting of an array of various monochromatic LEDs. Some LEDs were pulsed as a function of frequency while others

Control of thermal expansion in a low-density framework modification of silicon

September 30, 2018
Author(s)
Beekman Mathew, James A. Kaduk, Winnie Wong-Ng, George S. Nolas
The low-density clathrate-II modification of silicon, Si136, contains two distinct cage-like voids large enough to accommodate various types of guest atoms which influence both the host structure and its properties. Although the linear coefficient of

Initiation of flash boiling of multicomponent miscible mixtures with application to transportation fuels and their surrogates

August 16, 2018
Author(s)
Charles T. Avedisian, Kyle Skyllingstad1, Richard E. Cavicchi, Corinne Lippe, Michael J. Carrier
This paper presents methodologies to predict thermodynamic conditions that initiate flash boiling by spontaneous nucleation of liquids consisting of hundreds of miscible liquids and their lower order surrogate mixtures. The methods are illustrated with a

Ba8Cu16As30: A cationic-framework clathrate-I arsenide

August 10, 2018
Author(s)
Kaya Wei, Artem R. Khabibullin, Dean Hobbis, Winnie Wong-Ng, Tieyan Chang, SuYin G. Wang, Igor Levin, Yu-Sheng Chen, Lilia M. Woods, George S. Nolas
Single crystals of clathrate-I Ba8Cu16As30 have been synthesized, and their structure and electronic properties deter-mined using synchrotron-based X-ray diffraction and first principles calculations. The structure is confirmed to be cubic and defined by a

Identity and Access Management for Electric Utilities

July 13, 2018
Author(s)
James J. McCarthy
To protect power generation, transmission, and distribution, energy companies need to control physical and logical access to their resources, including buildings, equipment, information technology (IT), and operational technology (OT). They must

A practical field guide to thermoelectrics: fundamentals, synthesis, and characterization

June 27, 2018
Author(s)
Alex Zevalkink, David M. Smiadak, Joshua B. Martin, Michael Chabinyc, Olivier Delaire, Jeffrey Blackburn, Andrew Ferguson, Jian Wang, Kirill Kovnir, Laura Schelhas, Stephen D. Kang, Maxwell T. Dylla, G. J. Snyder, Brenden Ortiz, Eric Toberer
The study of thermoelectric materials spans condensed matter physics, materials science and engineering, and solid-state chemistry. The diversity of the participants and the inherent complexity of the topic means that it is difficult, if not impossible, for

Nanoscale photocurrent mapping in perovskite solar cells

June 1, 2018
Author(s)
Yohan Yoon, Dongheon Ha, Ik Jae Park, Paul M. Haney, Sangwook Lee, Nikolai Zhitenev
In this work, we study spatially-resolved generation of photocurrent of methylammonium lead iodide (CH3NH3PbI3) perovskite solar cells to reveal the microscopic effects of annealing temperature and degradation under light exposure. Correlating a novel

Synchrotron Methods for Flexible Hybrid Electronics Industrial Recommendations on Interagency (DoC-DoD-DoE) Partnerships to Address Measurement Challenges Hindering the Flexible Hybrid Electronics Manufacturing Ecosystem

February 12, 2018
Author(s)
Christopher L. Soles, Richard A. Vaia, Ronald Pindak
The round-table participants concluded that facilities at NSLS-II provide immediate opportunities to address some of the critical processing and measurement challenges that are blocking the path towards a sustainable US-centric Flexible Hybrid Electronic

Structural Aspects of Porphyrins for Functional Materials Applications

November 15, 2017
Author(s)
Lawrence P. Cook, Greg Brewer, Winnie Wong-Ng
Porphyrinic compounds comprise a diverse group of materials which have in common the presence of one or more cyclic tetrapyrrole units known as porphyrins in their molecular structures. The resulting aromaticity gives rise to the semiconducting properties
Displaying 151 - 175 of 550