Winston V Schoenfeld

Learn More
The characteristics of an acceptor level in Sb-doped, p-type ZnO were studied using cathodoluminescence ͑CL͒ spectroscopy as a function of hole concentration. Variable-temperature CL measurements allowed us to estimate the activation energy of an Sb-related acceptor from temperature-induced decay of CL intensity. The values of activation energy of about(More)
ZnMgO thin films were grown by Molecular Beam Epitaxy on closely-lattice-matched MgO substrates with a Radio-Frequency (RF) generated oxygen plasma. The impact on the cubic ZnMgO of oxygen flow rate and applied RF power was investigated under a high vacuum condition (1E-6 Torr). Optical Emission Spectroscopy identified active species in the plasma including(More)
  • Kristopher O Davis, Kaiyun Jiang, Carsten Demberger, Heiko Zunft, Helge Haverkamp, Dirk Habermann +1 other
  • 2013
—This paper addresses the calculation of internal back reflectance for various dielectrics that are used in rear-side pas-sivated crystalline silicon solar cells. Optical modeling of various stack configurations is examined to explore the back-surface re-flectance at the Si–dielectric interface for different film combinations and thicknesses as a function(More)
  • 1