Cargando…

Cuprous Oxide Nanoparticles: Synthesis, Characterization, and Their Application for Enhancing the Humidity-Sensing Properties of Poly(dioctylfluorene)

In this paper, we report on the synthesis—via the wet chemical precipitation route method—and thin film characteristics of inorganic semiconductor, cuprous oxide (Cu(2)O) nanoparticles, for their potential application in enhancing the humidity-sensing properties of semiconducting polymer poly(9,9-di...

Descripción completa

Detalles Bibliográficos
Autores principales: Tahir, Muhammad, Zeb, Muhammad, Alamgeer, Hussain, Shahid, Sarker, Mahidur R., Khan, Dil Nawaz, Wahab, Fazal, Ali, Sawal Hamid Md
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9028022/
https://www.ncbi.nlm.nih.gov/pubmed/35458255
http://dx.doi.org/10.3390/polym14081503
_version_ 1784691513499844608
author Tahir, Muhammad
Zeb, Muhammad
Alamgeer,
Hussain, Shahid
Sarker, Mahidur R.
Khan, Dil Nawaz
Wahab, Fazal
Ali, Sawal Hamid Md
author_facet Tahir, Muhammad
Zeb, Muhammad
Alamgeer,
Hussain, Shahid
Sarker, Mahidur R.
Khan, Dil Nawaz
Wahab, Fazal
Ali, Sawal Hamid Md
author_sort Tahir, Muhammad
collection PubMed
description In this paper, we report on the synthesis—via the wet chemical precipitation route method—and thin film characteristics of inorganic semiconductor, cuprous oxide (Cu(2)O) nanoparticles, for their potential application in enhancing the humidity-sensing properties of semiconducting polymer poly(9,9-dioctylfluorene) (F8). For morphological analysis of the synthesized Cu(2)O nanoparticles, transmission electron microscope (TEM) and scanning electron microscope (SEM) micrographs are studied to investigate the texture, distribution, shape, and sizes of Cu(2)O crystallites. The TEM image of the Cu(2)O nanoparticles exhibits somewhat non-uniform distribution with almost uniform shape and size having an average particle size of ≈24 ± 2 nm. Fourier transformed infrared (FTIR) and X-ray diffraction (XRD) spectra are studied to validate the formation of Cu(2)O nanoparticles. Additionally, atomic force microscopy (AFM) is performed to analyze the surface morphology of polymer-inorganic (F8-Cu(2)O) nanocomposites thin film to see the grain sizes, mosaics, and average surface roughness. In order to study the enhancement in sensing properties of F8, a hybrid organic–inorganic (F8-Cu(2)O) surface-type humidity sensor Ag/F8-Cu(2)O/Ag is fabricated by employing F8 polymer as an active matrix layer and Cu(2)O nanoparticles as a dopant. The Ag/F8-Cu(2)O/Ag device is prepared by spin coating a 10:1 wt% solution of F8-Cu(2)O nanocomposite on pre-patterned silver (Ag) electrodes on glass. The inter-electrode gap (≈5 μm) between Ag is developed by photolithography. To study humidity sensing, the Ag/F8-Cu(2)O/Ag device is characterized by measuring its capacitance (C) as a function of relative humidity (%RH) at two different frequencies (120 Hz and 1 kHz). The device exhibits a broad humidity sensing range (27–86%RH) with shorter response time and recovery time, i.e., 9 s and 8 s, respectively. The present results show significant enhancement in the humidity-sensing properties as compared to our previously reported results of Ag/F8/Ag sensor wherein the humidity sensing range was 45–78%RH with 15 s and 7 s response and recovery times, respectively. The improvement in the humidity-sensing properties is attributed to the potential use of Cu(2)O nanoparticles, which change the hydrophobicity, surface to volume ratio of Cu(2)O nanoparticles, as well as modification in electron polarizability and polarity of the F8 matrix layer.
format Online
Article
Text
id pubmed-9028022
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-90280222022-04-23 Cuprous Oxide Nanoparticles: Synthesis, Characterization, and Their Application for Enhancing the Humidity-Sensing Properties of Poly(dioctylfluorene) Tahir, Muhammad Zeb, Muhammad Alamgeer, Hussain, Shahid Sarker, Mahidur R. Khan, Dil Nawaz Wahab, Fazal Ali, Sawal Hamid Md Polymers (Basel) Article In this paper, we report on the synthesis—via the wet chemical precipitation route method—and thin film characteristics of inorganic semiconductor, cuprous oxide (Cu(2)O) nanoparticles, for their potential application in enhancing the humidity-sensing properties of semiconducting polymer poly(9,9-dioctylfluorene) (F8). For morphological analysis of the synthesized Cu(2)O nanoparticles, transmission electron microscope (TEM) and scanning electron microscope (SEM) micrographs are studied to investigate the texture, distribution, shape, and sizes of Cu(2)O crystallites. The TEM image of the Cu(2)O nanoparticles exhibits somewhat non-uniform distribution with almost uniform shape and size having an average particle size of ≈24 ± 2 nm. Fourier transformed infrared (FTIR) and X-ray diffraction (XRD) spectra are studied to validate the formation of Cu(2)O nanoparticles. Additionally, atomic force microscopy (AFM) is performed to analyze the surface morphology of polymer-inorganic (F8-Cu(2)O) nanocomposites thin film to see the grain sizes, mosaics, and average surface roughness. In order to study the enhancement in sensing properties of F8, a hybrid organic–inorganic (F8-Cu(2)O) surface-type humidity sensor Ag/F8-Cu(2)O/Ag is fabricated by employing F8 polymer as an active matrix layer and Cu(2)O nanoparticles as a dopant. The Ag/F8-Cu(2)O/Ag device is prepared by spin coating a 10:1 wt% solution of F8-Cu(2)O nanocomposite on pre-patterned silver (Ag) electrodes on glass. The inter-electrode gap (≈5 μm) between Ag is developed by photolithography. To study humidity sensing, the Ag/F8-Cu(2)O/Ag device is characterized by measuring its capacitance (C) as a function of relative humidity (%RH) at two different frequencies (120 Hz and 1 kHz). The device exhibits a broad humidity sensing range (27–86%RH) with shorter response time and recovery time, i.e., 9 s and 8 s, respectively. The present results show significant enhancement in the humidity-sensing properties as compared to our previously reported results of Ag/F8/Ag sensor wherein the humidity sensing range was 45–78%RH with 15 s and 7 s response and recovery times, respectively. The improvement in the humidity-sensing properties is attributed to the potential use of Cu(2)O nanoparticles, which change the hydrophobicity, surface to volume ratio of Cu(2)O nanoparticles, as well as modification in electron polarizability and polarity of the F8 matrix layer. MDPI 2022-04-07 /pmc/articles/PMC9028022/ /pubmed/35458255 http://dx.doi.org/10.3390/polym14081503 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tahir, Muhammad
Zeb, Muhammad
Alamgeer,
Hussain, Shahid
Sarker, Mahidur R.
Khan, Dil Nawaz
Wahab, Fazal
Ali, Sawal Hamid Md
Cuprous Oxide Nanoparticles: Synthesis, Characterization, and Their Application for Enhancing the Humidity-Sensing Properties of Poly(dioctylfluorene)
title Cuprous Oxide Nanoparticles: Synthesis, Characterization, and Their Application for Enhancing the Humidity-Sensing Properties of Poly(dioctylfluorene)
title_full Cuprous Oxide Nanoparticles: Synthesis, Characterization, and Their Application for Enhancing the Humidity-Sensing Properties of Poly(dioctylfluorene)
title_fullStr Cuprous Oxide Nanoparticles: Synthesis, Characterization, and Their Application for Enhancing the Humidity-Sensing Properties of Poly(dioctylfluorene)
title_full_unstemmed Cuprous Oxide Nanoparticles: Synthesis, Characterization, and Their Application for Enhancing the Humidity-Sensing Properties of Poly(dioctylfluorene)
title_short Cuprous Oxide Nanoparticles: Synthesis, Characterization, and Their Application for Enhancing the Humidity-Sensing Properties of Poly(dioctylfluorene)
title_sort cuprous oxide nanoparticles: synthesis, characterization, and their application for enhancing the humidity-sensing properties of poly(dioctylfluorene)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9028022/
https://www.ncbi.nlm.nih.gov/pubmed/35458255
http://dx.doi.org/10.3390/polym14081503
work_keys_str_mv AT tahirmuhammad cuprousoxidenanoparticlessynthesischaracterizationandtheirapplicationforenhancingthehumiditysensingpropertiesofpolydioctylfluorene
AT zebmuhammad cuprousoxidenanoparticlessynthesischaracterizationandtheirapplicationforenhancingthehumiditysensingpropertiesofpolydioctylfluorene
AT alamgeer cuprousoxidenanoparticlessynthesischaracterizationandtheirapplicationforenhancingthehumiditysensingpropertiesofpolydioctylfluorene
AT hussainshahid cuprousoxidenanoparticlessynthesischaracterizationandtheirapplicationforenhancingthehumiditysensingpropertiesofpolydioctylfluorene
AT sarkermahidurr cuprousoxidenanoparticlessynthesischaracterizationandtheirapplicationforenhancingthehumiditysensingpropertiesofpolydioctylfluorene
AT khandilnawaz cuprousoxidenanoparticlessynthesischaracterizationandtheirapplicationforenhancingthehumiditysensingpropertiesofpolydioctylfluorene
AT wahabfazal cuprousoxidenanoparticlessynthesischaracterizationandtheirapplicationforenhancingthehumiditysensingpropertiesofpolydioctylfluorene
AT alisawalhamidmd cuprousoxidenanoparticlessynthesischaracterizationandtheirapplicationforenhancingthehumiditysensingpropertiesofpolydioctylfluorene