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Solar cells based on arrays of CVD-grown Si nano- or micro-wires have attracted interest as potentially low-cost alternatives to conventional wafer-based Si photovoltaics [1-6], and single-wire solar cells have been reported with efficiencies of up to 3.4% [7]. We recently presented device physics simulations which predicted efficiencies exceeding 17%, based on experimentally observed diffusion lengths...
Single crystals of various n-type semiconducting oxides have been investigated in order to better understand the relationship between their photoelectrochemical behavior and their optical properties. The single crystals used in this study were all n-type and consisted of: KTaO 3 , BaTiO 3 , SrTiO 3 , and ZnO. Current density vs applied potential measurements indicated that...
Radial pn junctions are of interest in photovoltaics because of their potential to reduce the materials costs associated with cell fabrication. However, devices fabricated to date based on Au-catalyzed vapor-liquid-solid growth have suffered from low open-circuit voltages (to our knowledge the highest reports are 260 mV in the solid state and 389 mV in solid-liquid junctions). Herein we report on...
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