Characterization of NH\(_3\) Sensing Properties of P3HT+rGO+CNT Composite Films Made by Spin-coating

Long, Lam Minh; Định, Nguyễn Năng; Trung, Tran Quang

doi:10.15625/0868-3166/28/4/12683

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…The P3HT-rGO-MWCNTs blends were prepared based on methods reported in ref. [31]. To be specific, P3HT powder was mixed in the rGO-DMF solution.…”

Section: Preparation Of the P3ht-rgo-mwcnt Blendsmentioning

confidence: 99%

“…The surface morphology, crystal structure, and optical absorption of the samples was characterized using a "Hitachi S-4800" field emission scanning electron microscope (FE-SEM), D5000 with CuKα1 radiation (λ = 1.5406 Å) and a UV-Vis spectrophotometer (Jasco, V-670), respectively. The technique reported by Long et al [31] to monitor NH3 gas as described below was used in this study. The sensors were placed in a testing chamber with a volume of 10 dm 3 .…”

Section: Characterization Techniquesmentioning

confidence: 99%

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Ammonia Gas Sensing Characteristic of P3HT-rGO-MWCNT Composite Films

Tran¹,

Trung

Giang

et al. 2021

Applied Sciences

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In this work, the P3HT:rGO:MWCNTs (PGC) nanocomposite film applied to the ammonia gas sensor was successfully fabricated by a drop-casting technique. The results demonstrated that the optimum weight ratio of the PGC nanocomposite gas sensor is 20%:60%:20% as the weight ratio of P3HT:rGO:MWCNTs (called PGC-60). This weight ratio leads to the formation of nanostructured composites, causing the efficient adsorption/desorption of ammonia gas in/out of the film surface. The sensor based on PGC-60 possessed a response time of 30 s, sensitivity up to 3.6% at ammonia gas concentration of 10 ppm, and relative sensitivity of 0.031%/ppm. These results could be attributed to excellent electron transportation of rGO, the main adsorption activator to NH3 gas of P3HT, and holes move from P3HT to the cathodes, which works as charge “nano-bridges” carriers of Multi-Walled Carbon Nanotubes (MWCNTs). In general, these three components of PGC sensors have significantly contributed to the improvement of both the sensitivity and response time in the NH3 gas sensor.

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“…The P3HT-rGO-MWCNTs blends were prepared based on methods reported in ref. [31]. To be specific, P3HT powder was mixed in the rGO-DMF solution.…”

Section: Preparation Of the P3ht-rgo-mwcnt Blendsmentioning

confidence: 99%

Section: Characterization Techniquesmentioning

confidence: 99%

Ammonia Gas Sensing Characteristic of P3HT-rGO-MWCNT Composite Films

Tran¹,

Trung

Giang

et al. 2021

Applied Sciences

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“…A sheet resistance of 533 Ω and a transmittance of 88% were obtained when chemical-vapor-deposition grown graphene was fused across CNT networks [10]. Recently [11], we have prepared composite films of poly(3-hexylthiophene) and reduced graphene oxides (rGO-P3HT) for sensing ammonia gas. We recognized that rGO-P3HT films exhibited a rather large transparency and a reasonable sheet resistance.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Reduced Graphene-P3HT Composite Thin Films for Use as Transparent Conducting Electrodes

Long¹,

Long²,

Nam³

et al. 2018

MSA

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With the aim of producing simple and effective transparent conducting electrodes, the conducting polymer poly(3-hexylthiophene) (P3HT) incorporated with reduced graphene oxide film (rGO) (called rGO-P3HT) was prepared by spin-coating method. Structural, electrical and optical characterization showed that rGO-P3HT films 9.0 wt% P3HT exhibited good stability when exposed to the ambient atmosphere. These composite films of 200 nm thickness possess a sheet resistance and transparency of R ~ 17 Ω and T ~ 72%, respectively. Owing to containing conducting polymer, rGO-P3HT-coated glass could be efficiently used in photovoltaic applications, in organic solar cells in particular, with the replacement of the indium tin oxide (ITO) and fluorine tin oxide (FTO) electrodes.

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Poly3‐Hexylthiophene Titanium Dioxide (P3HT‐TiO₂) Composite Sensor for High Response Detection of Ammonia at Room Temperature

Fei,

Nie,

Ding

et al. 2024

ChemNanoMat

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Gas sensors for ammonia (NH3) play a crucial role in the maintenance of air quality, preservation of the atmosphere, and evaluation of human health. However, the endeavor to attain a high level of sensitivity in detecting NH3 under ambient conditions remains a challenging task. In this work, poly(3‐hexylthiophene)s and titanium dioxide (P3HT‐TiO2) heterostructure NH3 gas‐sensitive material was prepared, and by drop‐casting the material onto a substrate with Au interdigital electrodes, a sensor for high‐response detection of NH3 at room temperature was constructed. The designed gas sensor exhibited a high response signal of 114.61% toward 15 ppm NH3 at room temperature (25°C) with good reproducibility, strong long‐term stability, and excellent selectivity. Moreover, by analyzing the response law of the sensor under different humidity conditions, it has been noted that both excessively high and excessively low levels of humidity adversely affect the sensor’s response. The remarkable increase in NH3 sensing properties is attributed to the synergistic enhancement effect of P‐N heterojunction formed between P3HT and TiO2. This NH3 gas sensor exhibits tremendous potential for use due to its straightforward structure and outstanding ammonia sensing performance.

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Characterization of NH\(_3\) Sensing Properties of P3HT+rGO+CNT Composite Films Made by Spin-coating

Cited by 5 publications

References 17 publications

Ammonia Gas Sensing Characteristic of P3HT-rGO-MWCNT Composite Films

Ammonia Gas Sensing Characteristic of P3HT-rGO-MWCNT Composite Films

Preparation and Characterization of Reduced Graphene-P3HT Composite Thin Films for Use as Transparent Conducting Electrodes

Poly3‐Hexylthiophene Titanium Dioxide (P3HT‐TiO₂) Composite Sensor for High Response Detection of Ammonia at Room Temperature

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Characterization of NH\(_3\) Sensing Properties of P3HT+rGO+CNT Composite Films Made by Spin-coating

Cited by 5 publications

References 17 publications

Ammonia Gas Sensing Characteristic of P3HT-rGO-MWCNT Composite Films

Ammonia Gas Sensing Characteristic of P3HT-rGO-MWCNT Composite Films

Preparation and Characterization of Reduced Graphene-P3HT Composite Thin Films for Use as Transparent Conducting Electrodes

Poly3‐Hexylthiophene Titanium Dioxide (P3HT‐TiO2) Composite Sensor for High Response Detection of Ammonia at Room Temperature

Contact Info

Product

Resources

About

Poly3‐Hexylthiophene Titanium Dioxide (P3HT‐TiO₂) Composite Sensor for High Response Detection of Ammonia at Room Temperature