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Energy

Alternative energy

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Displaying 201 - 225 of 705

Direct Measurement of Hydrogen Diffusivity and Solubility Limits in Zircaloy 2 (Formula Unit of ZrH 0.0155 ) using Incoherent Quasi-Elastic Neutron Scattering

May 1, 2019
Author(s)
Brent J. Heuser, Timothy R Prisk, Jun-li Lin, Tanya J. Dax, Yongfeng Zhang
The diffusivity of hydrogen is an important property of light water nuclear reactor (LWR) fuel cladding. LWR cladding absorbs hydrogen during normal operation, a contributing factor to embrittlement that decreases the lifetime of the fuel. Mass transport

In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells

February 10, 2019
Author(s)
Lee J. Richter, Ahmad R. Kirmani, Furui Tan, Hairen Tan, Wei Mingyang, Makhsud I. Saidaminov, Mengxia Liu, Mei Anyi, Peicheng Li, Chih-Shan Tan, Xiwen Gong, Yongbiao Zhao, Ziru Huang, James Z. Fan, Rafael Quintero-Bermudez, Kim Junghwan, Yicheng Zhao, Oleksandr Voznyy, Zheng-Hong Lu, Weifeng Zhang, Edward H. Sargent, Bowen Zhang, Yueye Gao, Feng Zhang
Organic–inorganic hybrid perovskite solar cells (PSCs) have seen a rapid rise in power conversion efficiencies in recent years; however, they still suffer from interfacial recombination and charge extraction losses at interfaces between the perovskite

Nonlinear Response of Silicon Solar Cells

January 1, 2019
Author(s)
Behrang H. Hamadani, Andrew M. Shore, Howard W. Yoon, Mark Campanelli
We used an LED-array-based combinatorial flux addition method to explore the wavelength and the intensity-dependence of the spectral responsivity in silicon solar cells. Many types of silicon cells, whether mono- or multi-crystalline type, exhibit notable

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

Photochemical Dynamics of a Trimethyl-Phosphine Derivatized [FeFe]-Hydrogenase Model Compound

August 17, 2018
Author(s)
Edwin J. Heilweil, Rachel L. Meyer, Tara M. Biser, Anet D. Zhandosova, Christopher J. Stromberg
Coupling photosensitizers with [FeFe]-hydrogenase model compounds can potentially create light- driven catalysts for production of hydrogen gas from acidic protons. Though there have been many studies on the synthesis, kinetics, and reaction mechanisms of