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Physical Sciences and Mathematics Commons

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Full-Text Articles in Physical Sciences and Mathematics

What Determines The Emission Peak Energy Of The Blue Luminescence In Highly Mg-Doped P-Gan?, John S. Colton, P. Y. Yu Apr 2001

What Determines The Emission Peak Energy Of The Blue Luminescence In Highly Mg-Doped P-Gan?, John S. Colton, P. Y. Yu

Faculty Publications

We report a study of the 2.8 eV blue luminescence (BL) in heaviliy Mg-doped p-GaN via resonant excitation with a tunable blue dye laser. The dependence of the BL on the excitation photon energy (Eex) is unlike that of the yellow luminescence found in n-type GaN. An Urbach-type band tail, with Urbach parameter of 33 meV is observed in the vicinity of the BL energy. We propose that the peak energy of the BL marks the transition from localized states to delocalized states within this band tail.


Utah State University Extension Addressing Energy Issues, Dennis Hinkamp Feb 2001

Utah State University Extension Addressing Energy Issues, Dennis Hinkamp

All Current Publications

No abstract provided.


Energy Efficiency Can Help You Get A Home, Dennis Hinkamp Feb 2001

Energy Efficiency Can Help You Get A Home, Dennis Hinkamp

All Current Publications

It is a little known and seldom used financing tool, but Energy Efficient Mortgages (EEMs) can increase your buying power when looking for a home.


Renters, Too, Can Save On Utility Costs, Donna Falkenborg Jan 2001

Renters, Too, Can Save On Utility Costs, Donna Falkenborg

All Current Publications

“Most energy conservation information is designed for homeowners, even though an increasing number of people are renting,” says Leona K. Hawks, Utah State University Extension housing specialist. “Many renters develop a short-timer mentality and don’t worry much about energy savings. However, utility bills do add up quickly so renters may wish to conserve on their energy use,” she advises.


Windows Are Key To Keeping Warm In Winter, Donna Falkenborg Jan 2001

Windows Are Key To Keeping Warm In Winter, Donna Falkenborg

All Current Publications

“With the price of fuel skyrocketing, now is the time to think about energy-saving projects around the house, and the best place to start is with your windows,” advises Leona K. Hawks, Utah State University Extension housing specialist.


Design Of A High Temperature Superconductor Magnetic Energy Storage Systems, R L Causley, Christopher David Cook, Steve Gower Jan 2001

Design Of A High Temperature Superconductor Magnetic Energy Storage Systems, R L Causley, Christopher David Cook, Steve Gower

Faculty of Informatics - Papers (Archive)

The University of Wollongong (UoW) has received funding for the research and development of a 20 kJ high temperature superconducting magnetic energy storage device (HTS SMES). This SMES will be operated at 25 K in contrast to most existing HTS designs, which operate at 77K. This paper includes a literature review of the current technology for the configuration of the SMES coil and a summary of the work done at UoW to date. Solenoidal and toroidal coils designs are compared to determine which will provide the required level of energy stored for a minimum superconductor and device volume. The design …