Variable work function of semiconducting thin-film oxide electrodes: a case study of SnO2 and TiO2

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F23%3A00566615" target="_blank" >RIV/61388955:_____/23:00566615 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/23:10454101

Result on the web

<a href="https://hdl.handle.net/11104/0337933" target="_blank" >https://hdl.handle.net/11104/0337933</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10008-022-05353-1" target="_blank" >10.1007/s10008-022-05353-1</a>

Result language

angličtina

Original language name

Variable work function of semiconducting thin-film oxide electrodes: a case study of SnO2 and TiO2

Original language description

By atomic layer deposition, we prepared TiO2 thin films, which do not crack upon thermal treatment at 450-500C. The calcination changes the film's work function by tens of meV, as evidenced by electrochemical impedance (Mott-Schottky) and Kelvin probe analyses. In contrast, the work function of ALD-SnO2 is enhanced by hundreds of meV after this heat treatment. The work function of calcined ALD-SnO2 films is by ca. 0.3-0.4 eV larger than that of the cassiterite single-crystal electrode. The as-prepared ALD-SnO2 film exhibits significant anodic photocurrent at potentials, when the calcined film is photoelectrochemically inactive. The ALD growth of SnO2 on the Au(111) substrate occurs preferentially at the Au grain boundaries. In spite of its non-conformal morphology, the Au-supported SnO2 film still blocks perfectly the anodic oxidation of ferrocyanide. Electrochemical doping of ALD-SnO2 by lithium causes a decrease of the work functions by 0.1-0.2 eV in a broad range of film thicknesses.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/GA22-24138S" target="_blank" >GA22-24138S: Materials engineering of the conduction band edge in oxide semiconductors</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of Solid State Electrochemistry

ISSN

1432-8488

e-ISSN

1433-0768

Volume of the periodical

27

Issue of the periodical within the volume

7

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

1935-1943

UT code for WoS article

000901731500002

EID of the result in the Scopus database

2-s2.0-85144470243