Some pathogenic microbes utilize homologous recombination to generate antigenic variability in targets of immune surveillance. These specialized systems rely on the cellular recombination machinery to catalyse dedicated, high-frequency reactions that provide extensive diversity in the genes encoding surface antigens. A description of the specific mechanisms that allow unusually high rates of re...

Synthesis of low-cost, eco-friendly, semiconducting solar-energy materials with excellent photocatalytic activity [high surface area, good reactant adsorption, photon harnessing in the visible region, and low charge recombination] for application in...

Standard surface passivation schemes for crystalline silicon solar cells use SiO2 or SiNx. The c-Si surface passivation mechanisms related with these schemes have been elucidated within the framework of interface recombination modeled by an extended SRH formalism: interface recombination centers characteristic of the SiO2 passivation have larger electron (e) than hole (h) capture cross sections...

Schematic illustration of light harvesting and role Ti 1− x Fe O 2 photoanodes in PCE enhancement. This enhanced is ascribed to the increased surface adsorption reduced charge recombination via new electron state creation with 3+ doping.

Title of Thesis: CONTACTLESS SPECTRAL-DEPENDENT MEASUREMENT OF BULK LIFETIME AND SURFACE RECOMBINATION VELOCITY IN SILICON PHOTOVOLTAIC MATERIALS John Frederick Roller, Master of Science 2016 Thesis Directed By: Dr. Mario Dagenais, ECE Charge carrier lifetime measurements in bulk or unfinished photovoltaic (PV) materials allow for a more accurate estimate of power conversion efficiency in compl...

In order to make photovoltaics an economically viable energy solution, next-generation solar cells with higher energy conversion efficiencies and lower costs are urgently desired. Among many possible solutions, three-dimensional (3D) silicon nanostructures with excellent light-trapping properties are one of the promising candidates and have recently attracted considerable attention for cost-eff...