Amorphous semiconductor-electrolyte junction

6533b820fe1ef96bd127a2c8

RESEARCH PRODUCT

Amorphous semiconductor-electrolyte junction

Carmelo Sunseri F. Di Quarto R. D'agostino Salvatore Piazza

subject

Photocurrent business.industry Oxide Niobium chemistry.chemical_element Electrolyte Amorphous solid Light intensity chemistry.chemical_compound Wavelength Optics chemistry Density of states Optoelectronics business

description

Abstract The photoelectrochemical behaviour of amorphous anodic films on niobium (a-Nb 2 O 5 ) grown in a wide range of thicknesses (20 ⩽ d ox ⩽ 25 nm) is presented. The influence of the wavelength, light intensity and film thickness on the photocharacteristics of the a-Nb 2 O 5 /electrolyte junction is investigated. Expressions for the photocurrent curves under steady-state conditions are derived by assuming a variable efficiency of photocarrier generation and different distributions of the electrical potential inside the amorphous films. The influence of the light intensity on the photocharacteristics and the existence of a sub-band-gap photoresponse are explained by assuming a finite density of states within the mobility gap of a-Nb 2 O 5 films.

year	journal	country	edition	language
1987-08-01	Journal of Electroanalytical Chemistry and Interfacial Electrochemistry

https://doi.org/10.1016/0022-0728(87)80102-x

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