energy generationnanostructureA tandem approach is proposed using Silicon nanostructures to increase the efficiency of so-called third generation photovoltaic solar cells.Si quantum dot nanostructures (or silicon nanocrystals)are synthesized by depositing silicon-rich nitride (SRN) layers using plasma-...
The quantum confinement and enhanced optical properties of silicon quantum dots (SiQDs) make them attractive as an inexpensive and nontoxic material for a variety of applications such as light emitting technologies (lighting, displays, sensors) and photovoltaics. However, experimental demonstration of the...
where peaks are identified as theEijtransitions labeled in (d).bPositions of experimentally observed (symbols) peaks labeled asE11(black),E22(red),E33(blue), andE44(green), as a function of the number of layersN. Theoretical predictions (see text) are shown as curves.cEnergy bands in mon...
For instance, silicon carbide power semiconductors offer excellent voltage blocking for applications starting at 650V and provides even more benefits the higher the voltage. The key for the next essential step towards an energy-efficient world lies in the use of these new WBG power electroni...
Energy band gap and lattice constant contours are presented for the nine quaternary alloys formed from Al, Ga, In and P, As, Sb. The quaternary bandgaps were obtained using an interpolation formula proposed by Moon et al. The quater nary lattice constants were obtained by use of a linear ...
In a material, the energy difference between its non-conductive state and its conductive state. There is virtually no bandgap in most metals, but a very large one in an insulator (dielectric). In a semiconductor, the bandgap is small. Technically, the bandgap is the energy it takes to move...
15, 2011 — Silicon nanowire solutions supplier Bandgap Engineering has secured a pair of patents that represent significant breakthroughs in solar energy conversion efficiency and cost, it announced. Titled “Designing the host of nano-structured optoelectronic devices to improve performance,” US ...
Power electronic converters use semiconductors to satisfy the needs of different applications. Nowadays, these semiconductors are mainly based on Silicon (Si), which can be processed virtually without defects. However, the limits of Si are being reached and in consequence, Si based semiconductors have...
Legacy silicon, which has been the primary material for semiconductors since the 1950s, has a band-gap of 1.1 eV. The latest wide band-gap (WBG) semiconductors are those based on new and emerging materials that have band-gaps typically in the region of two to three times that of silicon...
Silicon-Germanium (SiGe) superlattices14, Erbium (Er) doped Si-rich materials15,16, and allotropes of Si17,18,19and Ge20,21, strained Ge on Si substrate22,23, GeSn alloy22,23all to some extend has its limitations. The pursuit of CMOS-compatible light emission from group-IV materials rem...