Search results for "Mott-Schottky theory"

showing 2 items of 2 documents

Electronic properties and mobile defects distribution in amorphous semiconducting passive films

2003

A study of the electronic properties of thin (drop 25 nm) a-WO3 and a-Nb2O5 is presented. Based on theory of amorphous semiconductor Schottky barrier the fitting of admittance curves in a large range of electrode potential (around 9 V) and a.c. frequency (100 Hz - 10 kHz) is performed. A density of electronic state distribution (DOS) is derived, which mimics the mobile defects distribution suggested by the classical high field model of oxides growth.

Kinetic growth studieMott-Schottky theorySettore ING-IND/23 - Chimica Fisica ApplicataMobile defects distributionPassive films
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Semiconductor electrochemistry approach to passivity and passivity breakdown of metals and metallic alloys

2004

AbstractA critical appraisal of the use of the theory of semiconductors in characterising passive films on metals and alloys is provided, with special emphasis on the use of Mott-Schottky theory for the location of characteristic energy levels of the passive film-electrolyte junction. Some inconsistencies between theory and experimental results in the case of thin passive films are discussed together with possible alternative ways for overcoming such problems. The role of semiconducting properties in determining the pitting behaviour of passive films on W in solutions containing halide is presented and discussed. The validity of a recently proposed correlation between the solid state proper…

Mott-Schottky theoryMaterials sciencePassivationbusiness.industryGeneral Chemical EngineeringPassivityMetallurgyHalideGeneral ChemistrysemiconductorElectrochemistryEngineering physicsCorrosionMetallic alloypittingSemiconductorsemiconductors; pitting; Mott-Schottky theoryGeneral Materials SciencebusinessCharacteristic energyCorrosion Engineering, Science and Technology
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