The TiO2/Ru(dcbpyH2)2(NCS)2/Au Schottky junction

Dye-sensitised Schottky junction cells were fabricated on stainless steel using TiO2 and silver nanowires. A titania sol was synthesised by a sol-gel process and was deposited on the substrate by dip coating, followed by sintering at 350°C for grade 304 stainless steel. Silver nanowires were drop cast from suspension and annealed. The current-voltage characteristics were measured and fit to the diode equation. The average I0 value for a typical batch of anatase devices was 4.9 × 10-6 A cm-2. The devices showed a UV response after treatment with tartaric acid and showed EQEs of 7.0 % in the UV at single wavelengths. It was possible to measure a small visible photocurrent for these devices following functionalisation with a ruthenium dye.

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A dye-sensitised Schottky junction device fabricated from nanomaterials on a stainless steel substrate

Ryall

Crook

Weinstein

2017

Materials Research Innovations

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Ultraviolet detection using TiO₂ nanowire array with Ag Schottky contact

Chinnamuthu

Dhar

Mondal

et al. 2012

J. Phys. D: Appl. Phys.

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The glancing angle deposition technique has been employed to synthesize TiO2 nanowire (NW) arrays which have been characterized by x-ray diffraction, field emission-scanning electron microscopy and high resolution transmission electron microscopy. Optical absorption measurements show the absorption edge at 3.42 eV and 3.48 eV for TiO2 thin film (TF) and NW, respectively. The blue shift in absorption band is attributed to quantum confinement in NW structures. Photoluminescence measurement revealed oxygen-defect-related emission at 425 nm (∼2.9 eV). Ag/TiO2 (NW) and Ag/TiO2 (TF) contacts exhibit Schottky behaviour, and a higher turn-on voltage (∼6.5 V) was observed for NW devices than that of TF devices (∼5.25 V) under dark condition. In addition, TiO2-NW-based devices show twofold improvement in photodetection efficiency in the UV region, compared with TiO2-TF-based devices.

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The TiO2/Ru(dcbpyH2)2(NCS)2/Au Schottky junction

Cited by 2 publications

References 15 publications

A dye-sensitised Schottky junction device fabricated from nanomaterials on a stainless steel substrate

A dye-sensitised Schottky junction device fabricated from nanomaterials on a stainless steel substrate

Ultraviolet detection using TiO₂ nanowire array with Ag Schottky contact

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The TiO2/Ru(dcbpyH2)2(NCS)2/Au Schottky junction

Cited by 2 publications

References 15 publications

A dye-sensitised Schottky junction device fabricated from nanomaterials on a stainless steel substrate

A dye-sensitised Schottky junction device fabricated from nanomaterials on a stainless steel substrate

Ultraviolet detection using TiO2 nanowire array with Ag Schottky contact

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Product

Resources

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Ultraviolet detection using TiO₂ nanowire array with Ag Schottky contact