ZnO Nanorods as Antireflection Layers in Metal-Insulator-Semiconductor Solar Cells

Metal-Insulator-Semiconductor Photodetectors

The major radiation of the sun can be roughly divided into three regions: ultraviolet, visible, and infrared light. Detection in these three regions is important to human beings. The metal-insulator-semiconductor photodetector, with a simpler process than the pn-junction photodetector and a lower dark current than the MSM photodetector, has been developed for light detection in these three regi...

Leakage Current Mechanism of InN-Based Metal-Insulator-Semiconductor Structures with Al2O3 as Dielectric Layers

InN-based metal-insulator-semiconductor (MIS) structures were prepared with Al2O3 as the gate oxides. Surface morphologies of InN films are improved with increasing Mg doping concentrations. At high frequencies, the measured capacitance densities deviate from the real ones with turning frequencies inversely proportional to series resistances. An ultralow leakage current density of 1.35 × 10(-9)...

Using spacer layers to control metal and semiconductor absorption in ultrathin solar cells with plasmonic substrates

Niraj N. Lal,1 Hang Zhou,2 Matthew Hawkeye,1 Jatin K. Sinha,3 Philip N. Bartlett,3 Gehan A. J. Amaratunga,2 and Jeremy J. Baumberg1 1NanoPhotonics Center, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom 2Centre for Advanced Photonics and Engineering, University of Cambridge CB3 0HE, United Kingdom 3School of Chemistry, University of Southampton SO17 1BJ, United ...

Amorphous silicon enhanced metal-insulator-semiconductor contacts for silicon solar cells

Metal-insulator transition in a doped semiconductor

Millikelvin measurements of the conductivity as a function of donor density and uniaxial stress in bulk samples of phosphorus-doped silicon establish that the transition from metal to insulator is continuous, but sharper than predicted by scaling theories of localization. The divergence of the dielectric susceptibility as the transition is approached from below also points out problems in curre...