๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Use of porous GaAs electrodes in photoelectrochemical cells

โœ Scribed by Cojocaru, A. ;Simashkevich, A. ;Sherban, D. ;Tiginyanu, I. ;Ursaki, V. ;Tsiulyanu, I. ;Usatyi, I.

Book ID
105363179
Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
163 KB
Volume
202
Category
Article
ISSN
0031-8965

No coin nor oath required. For personal study only.

โœฆ Synopsis

Abstract

The photoelectrochemical properties of semiconductorโ€electrolyte solar cells with carbon auxiliary electrode and colloidal aqueous solution of Na~2~SiO~3~ have been investigated. Bulk nโ€type single crystalline and nanoporous GaAs material were used as semiconductor electrodes. Currentโ€“voltage characteristics under different illumination intensities and spectral distribution of the photosensitivity were studied. The photopotential was found to reach values as high as 0.46 V for bulk nโ€GaAs. The introduction of porosity in GaAs shifts the maximum of the spectral distribution of photosensitivity towards the longwavelength region and increases the short circuit current by a factor of two. (ยฉ 2005 WILEYโ€VCH Verlag GmbH & Co. KGaA, Weinheim)

๐Ÿ“œ SIMILAR VOLUMES

ITO coated n-GaAs electrodes for photoel
ITO coated n-GaAs electrodes for photoelectrochemical solar cells
โœ A. Kraft; B. Gรถrig; K.-H. Heckner ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 448 KB

ITO coating of n-semiconductors should protect them against photocorrosion in aqueous electrolytes. For this purpose n-GaAs/ITO electrodes were produced by the magnetron sputtering technique. The dependence of the photovoltaic properties on the post deposition annealing temperatures is shown. The be

Photoelectrochemical reactivity of a sul
Photoelectrochemical reactivity of a sulfide treated p-GaAs electrode
โœ J. Ushizaki; S. Nakabayashi; K. Uosaki ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 458 KB

The surface recombination of photocreated charge carriers is reduced by dipping a p-GaAs electrode in an aqueous solution containing ammonium sulfide. This pretreatment dramatically enhances photoelectrochemical reactivity to form phenylacetic acid from carbon dioxide and benxyl chloride.