Strongly thermochromic W-doped VO2 films with a large temperature coefficient of electrical resistance near room temperature

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F25%3A43976343" target="_blank" >RIV/49777513:23520/25:43976343 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.apsadv.2025.100870" target="_blank" >https://doi.org/10.1016/j.apsadv.2025.100870</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsadv.2025.100870" target="_blank" >10.1016/j.apsadv.2025.100870</a>

Result language

angličtina

Original language name

Strongly thermochromic W-doped VO2 films with a large temperature coefficient of electrical resistance near room temperature

Original language description

We report the crystal structure, surface morphology, electronic band structure, optical and electrical properties, and semiconductor-metal transition characteristics of strongly thermochromic W-doped VO2 films with a large (up to −16 % 1/K) temperature coefficient of electrical resistance at a small hysteresis width of electrical resistivity (down to 3 °C) near room temperature, and with a wide temperature operation range at a high detection sensitivity (≥ 8 % 1/K) and low values of the electrical resistivity. They were deposited at a reduced substrate temperature of 350 °C onto soda-lime glass (SLG) with two versions of yttria-stabilized zirconia (YSZ) interlayers possessing different cubic crystal orientations, and onto bare SLG and monocrystalline YSZ and Al2O3 substrates for comparison. The W-doped VO2 depositions were performed using reactive deep oscillation magnetron sputtering with feedback pulsed O2 flow control, allowing us to increase the deposition rate of films up to 20–30 nm/min for a target-substrate distance of 100 mm. The results are important for further improvement of the thermochromic performance of VO2-based coatings for energy-saving smart windows and for a new design of high-performance infrared detectors and temperature sensors prepared by a fast, low-temperature, scalable synthesis.

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

20506 - Coating and films

Project

<a href="/en/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Quantum materials for applications in sustainable technologies</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Applied Surface Science Advances

ISSN

2666-5239

e-ISSN

2666-5239

Volume of the periodical

30

Issue of the periodical within the volume

DEC 2025

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

nestránkováno

UT code for WoS article

001593478900001

EID of the result in the Scopus database

2-s2.0-105018225853