Next Article in Journal
Investigation on the Surface Integrity of 40Cr Steel Machined by Rotary Ultrasonic Flank Milling
Previous Article in Journal
A Comprehensive Review of Electromagnetic Interference Shielding Composite Materials
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Micromachines
Volume 15
Issue 2
10.3390/mi15020188
micromachines-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Nanostructured Oxide (SnO2, FTO) Thin Films for Energy Harvesting: A Significant Increase in Thermoelectric Power at Low Temperature

by
Karuppiah Deva Arun Kumar
1,2,*,
S. Valanarasu
2,
Alex Capelle
1,
Sibel Nar
1,3,
Wael Karim
1,
Arnaud Stolz
1,
Barthélemy Aspe
1 and
Nadjib Semmar
1,*
1
Groupe de Recherches sur l’Énergétique des Milieux Ionisés, GREMI, Université d’Orléans, CNRS, 14 Rue d’Issoudun, 45067 Orléans, France
2
Department of Physics, Arul Anandar College, Madurai 625514, India
3
Laboratoire Nanotechnologies et Nanosystèmes (LN2)-CNRS IRL-3463, Université de Sherbrooke, Sherbrooke, QC J1K OA5, Canada
*
Authors to whom correspondence should be addressed.
Micromachines 2024, 15(2), 188; https://doi.org/10.3390/mi15020188
Submission received: 27 November 2023 / Revised: 20 January 2024 / Accepted: 23 January 2024 / Published: 26 January 2024
(This article belongs to the Special Issue Nanomaterials Based Catalysis and Energy Conversion)
Browse Figures
Versions Notes

Abstract

Previous studies have shown that undoped and doped SnO2 thin films have better optical and electrical properties. This study aims to investigate the thermoelectric properties of two distinct semiconducting oxide thin films, namely SnO2 and F-doped SnO2 (FTO), by the nebulizer spray pyrolysis technique. An X-ray diffraction study reveals that the synthesized films exhibit a tetragonal structure with the (200) preferred orientation. The film structural quality increases from SnO2 to FTO due to the substitution of F− ions into the host lattice. The film thickness increases from 530 nm for SnO2 to 650 nm for FTO films. Room-temperature electrical resistivity decreases from (8.96 ± 0.02) × 10−2 Ω·cm to (4.64 ± 0.01) × 10−3 Ω·cm for the SnO2 and FTO thin films, respectively. This is due to the increase in the carrier density of the films, (2.92 ± 0.02) × 1019 cm−3 (SnO2) and (1.63 ± 0.03) × 1020 cm−3 (FTO), caused by anionic substitution. It is confirmed that varying the temperature (K) enhances the electron transport properties. The obtained Seebeck coefficient (S) increases as the temperature is increased, up to 360 K. The synthesized films exhibit the S value of −234 ± 3 μV/K (SnO2) and −204 ± 3 μV/K (FTO) at 360 K. The estimated power factor (PF) drastically increases from ~70 (μW/m·K2) to ~900 (μW/m·K2) for the SnO2 and FTO film, respectively.
Keywords: oxide thin films; spray pyrolysis; Hall Effect; Seebeck coefficient oxide thin films; spray pyrolysis; Hall Effect; Seebeck coefficient

Share and Cite

MDPI and ACS Style

Deva Arun Kumar, K.; Valanarasu, S.; Capelle, A.; Nar, S.; Karim, W.; Stolz, A.; Aspe, B.; Semmar, N. Nanostructured Oxide (SnO2, FTO) Thin Films for Energy Harvesting: A Significant Increase in Thermoelectric Power at Low Temperature. Micromachines 2024, 15, 188. https://doi.org/10.3390/mi15020188

AMA Style

Deva Arun Kumar K, Valanarasu S, Capelle A, Nar S, Karim W, Stolz A, Aspe B, Semmar N. Nanostructured Oxide (SnO2, FTO) Thin Films for Energy Harvesting: A Significant Increase in Thermoelectric Power at Low Temperature. Micromachines. 2024; 15(2):188. https://doi.org/10.3390/mi15020188

Chicago/Turabian Style

Deva Arun Kumar, Karuppiah, S. Valanarasu, Alex Capelle, Sibel Nar, Wael Karim, Arnaud Stolz, Barthélemy Aspe, and Nadjib Semmar. 2024. "Nanostructured Oxide (SnO2, FTO) Thin Films for Energy Harvesting: A Significant Increase in Thermoelectric Power at Low Temperature" Micromachines 15, no. 2: 188. https://doi.org/10.3390/mi15020188

APA Style

Deva Arun Kumar, K., Valanarasu, S., Capelle, A., Nar, S., Karim, W., Stolz, A., Aspe, B., & Semmar, N. (2024). Nanostructured Oxide (SnO2, FTO) Thin Films for Energy Harvesting: A Significant Increase in Thermoelectric Power at Low Temperature. Micromachines, 15(2), 188. https://doi.org/10.3390/mi15020188

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop