Role of the tip induced local anodic oxidation in the conductive atomic force microscopy of mixed phase silicon thin films

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Role of the tip induced local anodic oxidation in the conductive atomic force microscopy of mixed phase silicon thin films

Popis výsledku v původním jazyce

We show that local currents observed by the Conductive Atomic Force Microscopy (C-AFM) of silicon thin films measured in ambient atmosphere are generally limited by surface oxide, either native or created by the measurement itself in a process of Local Anodic Oxidation (LAO), as evidenced by observed topographic changes of Si surface. The tip-induced LAO changes the character of the local current maps in repeated scans or even in the first scan of a pristine surface. In particular, the oxidation of theneighboring scan lines leads to the appearance of grain edges as conductive rings. Finally, we have used brief HF acid etch to strip the oxide in order to restore the contrast in the C-AFM maps of aged samples and we compare the observed local current levels to those observed in ultra-high vacuum C-AFM on in-situ deposited samples.

Název v anglickém jazyce

Role of the tip induced local anodic oxidation in the conductive atomic force microscopy of mixed phase silicon thin films

Popis výsledku anglicky

We show that local currents observed by the Conductive Atomic Force Microscopy (C-AFM) of silicon thin films measured in ambient atmosphere are generally limited by surface oxide, either native or created by the measurement itself in a process of Local Anodic Oxidation (LAO), as evidenced by observed topographic changes of Si surface. The tip-induced LAO changes the character of the local current maps in repeated scans or even in the first scan of a pristine surface. In particular, the oxidation of theneighboring scan lines leads to the appearance of grain edges as conductive rings. Finally, we have used brief HF acid etch to strip the oxide in order to restore the contrast in the C-AFM maps of aged samples and we compare the observed local current levels to those observed in ultra-high vacuum C-AFM on in-situ deposited samples.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica Status Solidi C: Current Topics in Solid State Physics

ISSN

1862-6351

e-ISSN

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Svazek periodika

7

Číslo periodika v rámci svazku

3-4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

4

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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