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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Kvantové materiály pro aplikace v udržitelných technologiích</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Applied Surface Science Advances

ISSN

2666-5239

e-ISSN

2666-5239

Svazek periodika

30

Číslo periodika v rámci svazku

DEC 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

nestránkováno

Kód UT WoS článku

001593478900001

EID výsledku v databázi Scopus

2-s2.0-105018225853