To create better solar cells, it’s important to understand the electrical properties of their materials. A fundamental property of elements is band gap (or energy gap), which is the minimum energy required by the electrons in the outermost shell of an atom to jump free of the atom, leaving...
Figure 1: Scheme and structure of perovskite solar cell. (a) Device structure of the perovskite planar heterojunction solar cells and schematic illustration for the crosslinking of C60-SAM with silane-coupling agent. ET, electron transfer. (b) Cross-section SEM image of a typical perovskite devic...
Department of Energy scientists claim a world record in solar-cell efficiency with a photovoltaic device that converts to electricity 40.8% of the concentrated sunlight it receives in tests. To reach this conversion efficiency, researchers at the National Renewable Energy Laboratory use a metamor-phic...
THE large-scale use of photovoltaic devices for electricity generation is prohibitively expensive at present: generation from existing commercial devices costs about ten times more than conventional methods1. Here we describe a photovoltaic cell, created
The findings of this paper give further insight into the problems and ascertain some requirements imposed on the CdTe absorber layer parameters in a CdTe/CdS solar cell, which in our opinion could be taken into account in the technology of fabrication of solar cells. The model taking into accou...
The fundamental limits for the measurement of the efficiency of single nanowire solar cell devices are presented. We evaluate the effect of the substrate, light polarization, and existence of Mie resonances in the absorption of the solar spectrum for nanowires with diameters from 10 to 300nm. We...
solar cell efficiencyphotovoltaic efficiencyenergy conversion efficiencyConsolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new entries since January ...
In this Perspective we first discuss several promising applications of solar evaporation, and the corresponding figures of merit, for clean water production, wastewater and brine management, resource recovery, sterilization and power generation. We then discuss the fundamental aspects of solar evaporation ...
Nearly doubling the efficiency of a breakthrough photovoltaic cell they created last year, UCLA researchers have developed a two-layer, see-through solar film that could be placed on windows, sunroofs, smartphone displays and other surfaces to harvest energy from the sun. The new device is compo...
摘要: Features a study which presented a GaAs solar cell without prismatic covers with the highest efficiency in the range of 1000-2000 suns for a single junction. Optimization of the solar cell structure; Details on solar cell manufacture; Experimental results and discussion; Conclusion....