Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Christopher L. Exstrom"'
Publikováno v:
Journal of Sustainable Cement-Based Materials. 11:62-82
This study investigates the performance of binary blended concrete mixtures containing ordinary Portland cement (OPC) and corn stover ash (CSA) in terms of chloride ingress, chloride binding capaci...
Autor:
Matthew Hilfiker, Joshua S. Edgar, Scott A. Darveau, C.J. Curry, Aaron Ediger, Qinglei Ma, Christopher L. Exstrom, Michael P. Hanrahan, Natale J. Ianno
Publikováno v:
MRS Advances. 1:2821-2826
WSe2 films have been fabricated using a low-temperature, two-step method involving the reaction of W(CO)6 and elemental selenium in refluxing (110 °C) toluene to form a nanocrystalline precursor consisting of amorphous tungsten and trigonal crystall
Autor:
Prannoy Suraneni, Sivakumar Ramanathan, James S. Vaux, Mahmoud Shakouri, Christopher L. Exstrom
Publikováno v:
Cement and Concrete Composites. 112:103658
This paper investigates the feasibility of using corn stover ash (CSA) as supplementary cementitious material to replace cement in concrete. Three types of CSA -- water-washed, acid-washed, and untreated burned corn stover -- were produced, and the i
Publikováno v:
Construction and Building Materials. 243:118171
Significant research is being conducted to identify alternative sources of supplementary cementitious materials (SCM) worldwide. With the shortage of fly ash, due to the shut-down of several coal-fired power plants worldwide, there is an exigent need
Publikováno v:
Thin Solid Films. 562:361-366
Iron pyrite (FeS 2 ) is a promising photovoltaic absorber material with a high natural abundance and low cost, but surface defects and low photoresponse inhibit sunlight energy conversion. The surface stability of pyrite FeS 2 nanocrystals synthesize
Autor:
Anatole Mirasano, Martin Diaz, Scott A. Darveau, A. L. Martinez-Skinner, Jiri Olejnicek, Matt A. Ingersoll, Rodney J. Soukup, Natale J. Ianno, C. A. Kamler, Christopher L. Exstrom, James Huguenin-Love
Publikováno v:
Solar Energy Materials and Solar Cells. 94:8-11
A non-vacuum, two-step process has been used to prepare a series of nanocrystalline CuIn 1− x Ga x Se 2 ( x =0, 0.25, 0.5, 0.75, 1) materials. An open-air solvothermal preparation in triethylenetetramine solvent was followed by annealing at 500 °C
Autor:
Scott A. Darveau, Jiri Olejnicek, Natale J. Ianno, C. A. Kamler, James Huguenin-Love, Rodney J. Soukup, Christopher L. Exstrom
Publikováno v:
Solar Energy Materials and Solar Cells. 93:45-50
Previous attempts in producing light absorbing materials with bandgaps near the 1.37 eV efficiency optimum have included the partial substitution of gallium or aluminum for indium in the CIS system. The most efficient of these solar cells to date hav
Autor:
Christopher L. Exstrom, Scott A. Darveau, James Huguenin-Love, J.S. Schrader, Rodney J. Soukup, Vikram L. Dalal, R.N. Udey, Natale J. Ianno
Publikováno v:
Solar Energy Materials and Solar Cells. 90:2338-2345
Experimental results on thin films of the new material Ge x C 1− x , deposited by a unique dual plasma hollow cathode sputtering technique are presented here. The (Ge, C) system is extremely promising since the addition of C to Ge has reduced the l
Publikováno v:
Solar Energy Materials and Solar Cells. 87:87-98
Using a novel hollow cathode plasma-jet reactive sputtering system in which an intense plasma, ignited in an Ar/H2 flow, is directed through silicon and germanium nozzles, a series of a-SiGe:H thin films have been prepared on silicon and on glass sub
Optical emission spectroscopy of High Power Impulse Magnetron Sputtering (HiPIMS) of CIGS thin films
Autor:
Zdenek Hubicka, Jiri Olejnicek, M. Kohout, Scott A. Darveau, Petra Kšírová, Stepan Kment, Martin Cada, Christopher L. Exstrom, M. Brunclíková
Publikováno v:
2014 IEEE 40th Photovoltaic Specialist Conference (PVSC).
CuIn 1−x Ga x Se 2 (CIGS) thin films with x = 0, 0.28 and 1 were prepared by the sputtering of Cu, In and Ga in HiPIMS (High Power Impulse Magnetron Sputtering) or DC magnetron and subsequently selenized in an Ar+Se atmosphere. Optical emission spe