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Energy

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Displaying 351 - 375 of 571

Realization of high thermoelectric performance in p-type unfilled ternary skutterudites FeSb2+xTe1-x via band structure modification and significant electron-phonon scattering

September 28, 2013
Author(s)
Gangjian Tan, Xianli Su, Wei Liu, Hang Chi, Yonggao Yan, Xinfeng Tang, Ctirad Uher, Winnie Wong-Ng
FeSb2Te, a ternary system derived from binary CoSb3, displays anomalous electrical and thermal transport properties because of the considerable modification in band structure induced by Fe and the significant mixed valence states (namely Fe2+ and Fe3+)

Advances in Materials Science for Environmental and Energy Technologies II

August 5, 2013
Author(s)
Winnie K. Wong-Ng, Josef Matyas, Ohji Tatsuki , Xingbo Liu, Mariappan Paranthaman, Ram Devanathan, Kevin Fox
The Materials Science and Technology 2012 Conference and Exhibition (MS&T’12) was held October 7-11, 2012, in Pittsburgh, Pennsylvania. One of the major themes of the conference was Environmental and Energy Issues. Papers from five of the symposia held

Absolute spectral responsivity measurements of solar cells by a hybrid optical technique

July 15, 2013
Author(s)
Behrang H. Hamadani, John F. Roller, Brian P. Dougherty, Fiona Persaud, Howard W. Yoon
An irradiance mode, absolute differential spectral response measurement system for solar cells is presented. The system is based on combining the monochromator-based approach of determining the power mode spectral responsivity of cells with an LED-based

On the Field Evaporation Behavior of c-axis GaN Nanowires in Laser-Pulsed Atom Probe Tomography

June 26, 2013
Author(s)
Matthew D. Brubaker, Kristine A. Bertness, Norman A. Sanford, Brian Gorman, David R. Diercks, R Kirchofer
GaN has seen use in many applications such as photovoltaics, blue and ultraviolet lasers, and light-emitting diodes with additional research into expanded and new applications. GaN in the form of nanowires present additional possibilities due to their high

High-Resolution Photocurrent Microscopy Using Near-Field Cathodoluminescence of Quantum Dots

June 10, 2013
Author(s)
Heayoung Yoon, Youngmin Lee, Christopher C. Bohn, Seung H. Ko, Anthony G. Gianfrancesco, Jonathan S. Steckel, Seth Coe-Sullivan, Albert A. Talin, Nikolai B. Zhitenev
We report a fast, versatile photocurrent imaging technique to visualize the local photo response of solar energy devices and optoelectronics using near-field cathodoluminescence (CL) from a homogeneous quantum dot layer. This approach is quantitatively

Towards Demand Response Measurement and Verification Standards

May 1, 2013
Author(s)
David G. Holmberg, David Hardin, Ed Koch
The value and impact of demand response (DR) at grid-scale depends upon the widespread and active participation of a diverse customer base. The level of participation by customers is impacted by financial compensation and return-on-investment. The role of

Advanced Distillation Curve Analysis of Marine Diesel Fuel

January 17, 2013
Author(s)
Peter Y. Hsieh, Kathryn R. Abel, Thomas J. Bruno
Ocean-going ships burn heavy fuel oil. The combustion of heavy fuel oil in marine diesel engines emits nitrogen oxides, sulfur oxides, and particulates into the air. Growing public concern over air quality has led to increased scrutiny of heavy fuel oil as

The BIOREMA project part 2: International interlaboratory comparison for biodiesel test methods

January 4, 2013
Author(s)
Michele M. Schantz, Manuela Ulberth-Buchgraber, Monica Potalivo, Andrea Held, Annaratia Baldan, Adriaan van der Veen, Hugo Ent, Valnei Cunha, Romeu Daroda, Ruth Hearn, Richard Brown, Paul Brewer, Brian E. Lang
The results of an interlaboratory comparison, using various measurement methods to carry out biodiesel testing, are presented, and the findings discussed. The interlaboratory comparison was organised within the framework of an EU funded project called
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