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Displaying 401 - 425 of 1087

Supramolecular Hemicage Cobalt Mediators for Efficient and Stable Dye-Sensitized Solar Cells

October 11, 2016
Author(s)
Lisa A. Fredin, Marina Freitag, Wenxing Yang, Luca D' Amario, K. Martin Karlsson, Anders Hagfeldt, Gerrit Boschloo
A new class of DSCs using the hemicage cobalt based mediator [Co(ttb)] 2+/3+ using the hexadentate ligand 5,5'',5''''-((2,4,6- triethyl highly preorganized benzene-1,3,5-triyl)tris(ethane-2,1- diyl))tri-2,2'- bipyridine (ttb) were studied. Current-voltage

Methylammonium lead iodide grain boundaries exhibit depth-dependent electrical properties

September 23, 2016
Author(s)
Gordon A. MacDonald, Mengjin Yang, Samuel Berweger, Jason Killgore, Pavel Kabos, Joeseph Berry, Kai Zhu, Frank W. DelRio
In this letter, the nanoscale through-film and lateral photoresponse and conductivity of large-grained methylammonium lead iodide thin films are studied. In perovskite solar cells (PSC), these films result in efficiencies > 17%. The top surface of the

Electrochemical intercalation of lithium ions into NbSe2 nanosheets

September 21, 2016
Author(s)
Albert Davydov, Anand V. Patel, Louisa Meshi, Emily Hitz, Liangbing Hu
Transition metal dichalcogenides (TMDCs) have been known for decades to have unique properties and recently attracted broad attention for their two-dimensional (2D) characteristics. NbSe2 is a metallic TMDC that has been studied for its charge density wave

Compressed-Liquid Densities of Three Reference Fuels for Combustion Testing

September 19, 2016
Author(s)
Stephanie L. Outcalt
Compressed-liquid densities of three aviation fuels have been measured with a vibrating-tube densimeter. The measurements were made from 270 K to 470 K, and 0.5 MPa to 45 MPa and have an overall combined uncertainty of 0.81 kg.m-3. The data from each of

X-ray Powder Diffraction Reference Patterns for Bi1-xPbxOCuSe

September 16, 2016
Author(s)
Winnie K. Wong-Ng, Yonggao Yan, James A. Kaduk, Xinfeng Tang
The structures and powder X-ray reference diffraction patterns of the ‘natural superlattice’ series Bi1-xPbxOCuSe (x=0, 0.02, 0.04, 0.06, 0.08 and 0.1) have been investigated. As the ionic radius of Pb2+ is greater than that of Bi3+, the unit cell volume
Displaying 401 - 425 of 1087
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