ZnO-Al2O3 and ZnO-TiO2 core-shell nanowire dye-sensitized solar cells

Article Abstract:

The construction and performance of dye-sensitized solar cells (DSCs) based on arrays of ZnO nanowires coated with thin shells of amorphous Al2O3 or anatase Tio2 by atomic layer deposition is described. Results reveal that alumina shells of all thicknesses act as insulating barriers that improve cell open-circuit voltage only at expense of a larger decrease in short-circuit current density.

Titanium dioxide, Solar cells, Solar batteries, Chemical properties

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Semiconductor nanowires for subwavelength photonics integration

Article Abstract:

Focus is laid on one-dimensional (1D) semiconductor subwavelength optical elements and their potential use as active and passive components in photonic devices is assessed. An updated review of their optical properties, including spontaneous emission, ultrafast carrier dynamics, cavity resonance feedback photodetection, and waveguiding is provided.

Science & research, Research, Analysis, Photonics, Nanoparticles

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ZnO nanowire transistors

Article Abstract:

The study reports on the reproducible performance of single ZnO nanowire field-effect transistors (FETs) in standard global back-gate geometry. It describes a dynamic gate effect that seems to involve mobile surface charges and causes hysteresis in the transconductance, among other effects.

Electric properties, Field-effect transistors, Field effect transistors

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