Sensing behavior of CuO-doped ZnO/PS nanoparticles

Ibrahim, Isam M.; Sharhan, Shahad I.; Ibrahim, Fuad T.

doi:10.1016/j.matlet.2015.05.101

Cited by 9 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicates that the introduced n-WO3 NWs not only maintain the low operating temperature but also improve the sensitivity and selectivity to NO2 gas of n-PS. This is similar to the gas sensing characterizations for other PS/metal oxides-based gas sensors [34][35][36].…”

Section: No2-sensing Performancessupporting

confidence: 82%

Preparation and room temperature NO 2 -sensing performances of n-porous silicon/n-WO 3 nanowires heterojunction

Yan

Liang

et al. 2016

Materials Research Bulletin

View full text Add to dashboard Cite

Section: No2-sensing Performancessupporting

confidence: 82%

Preparation and room temperature NO 2 -sensing performances of n-porous silicon/n-WO 3 nanowires heterojunction

Yan

Liang

et al. 2016

Materials Research Bulletin

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 93%

“…The average crystalline size of the thin film of MEH-PPV polymer was 11.1 nm, close to previous work that reported a grain size of 12.3 nm. 8 The XRD profile of the MEH-PPV thin layer showed a broadened crystalline peak with a FWHM of 15.94°, indicating a roughly amorphous nature of the polymer. 9,10 Optical Properties of the Thin Film Figure 4 shows the optical absorbance spectrum in the wavelength range from 400 nm to 700 nm for the MEH-PPV thin film deposited on glass substrate after annealing at 125°C.…”

Section: Structural Analysismentioning

confidence: 93%

Innovative Organic MEH-PPV Heterojunction Device Made by USP and PVD

Meftah

Benhaliliba

Kaleli

et al. 2021

Journal of Elec Materi

View full text Add to dashboard Cite

An Al/p-Si/poly[2-methoxy-5-(2-ethylhexoxy)-p-phenylenevinylene] (MEH-PPV)/Ag organic heterojunction has been prepared using homemade ultrasonic spray pyrolysis (USP) equipment for deposition of the organic thin film and physical vapor deposition (PVD) for the metallic contacts. The organic layer produced on glass was analyzed by optical and morphological methods. The bandgap of the organic thin film was found to be $ 2.03 eV with a thickness of around 140 nm, using ultraviolet-visible (UV-Vis) and scanning electron microscopy (SEM) characterization, respectively. The amorphous nature of the MEH-PPV polymer was confirmed by its x-ray diffraction pattern. To determine the electrical parameters, the heterojunction based on MEH-PPV was characterized by current-voltage (I-V) and capacitance-voltage (C-V) measurements in the dark at room temperature. The ideality factor and barrier height of the organic heterojunction were found to be 3.6 eV and 0.56 eV to 0.59 eV, respectively, with an average series resistance of 94.39 X, based on the I-V characteristics. The barrier height was also calculated based on the capacitance-voltage measurements, yielding slightly different results due to the applied frequencies of 10 kHz (/ B ¼ 0:50) and 1 MHz ð/ B ¼ 0:74Þ, respectively.

show abstract

“…However, resistive-type MOS gas sensors are generally poor selectively to many gases because many gas species may cause simultaneous resistance changes, making it impossible to properly identify the gas with a single sensor [ 12 ]. Several approaches, such as structure manipulation, decoration of noble metals (including Au, Pt, and Pd [ 13 , 14 , 15 ]), and heterostructure formation have been reported by several researchers to improve the selectivity of MOS gas sensors [ 16 , 17 , 18 ]. Among these approaches, noble metal nanoparticle (NP) decoration is promising in gas-sensing enhancement.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Functionalization of Porous Silicon/WO3 Nanorods with Pd Nanoparticles and Their Enhanced NO2-Sensing Performance at Room Temperature

Xia

Zhao

et al. 2018

Materials

View full text Add to dashboard Cite

The decoration of noble metal nanoparticles (NPs) on the surface of metal oxide semiconductors to enhance material characteristics and gas-sensing performance has recently attracted increasing attention from researchers worldwide. Here, we have synthesized porous silicon (PS)/WO3 nanorods (NRs) functionalized with Pd NPs to enhance NO2 gas-sensing performance. PS was first prepared using electrochemical methods and worked as a substrate. WO3 NRs were synthesized by thermally oxidizing W film on the PS substrate. Pd NPs were decorated on the surface of WO3 NRs via in-situ reduction of the Pd complex solution by using Pluronic P123 as the reducing agent. The gas-sensing characteristics were tested at different gas concentrations and different temperatures ranging from room temperature to 200 °C. Results revealed that, compared with bare PS/WO3 NRs and Si/WO3 NRs functionalized with Pd NPs, the Pd-decorated PS/WO3 NRs exhibited higher and quicker responses to NO2, with a detection concentration as low as 0.25 ppm and a maximum response at room temperature. The gas-sensing mechanism was also investigated and is discussed in detail. The high surface area to volume ratio of PS and the reaction-absorption mechanism can be explained the enhanced sensing performance.

show abstract

Sensing behavior of CuO-doped ZnO/PS nanoparticles

Cited by 9 publications

References 18 publications

Preparation and room temperature NO 2 -sensing performances of n-porous silicon/n-WO 3 nanowires heterojunction

Preparation and room temperature NO 2 -sensing performances of n-porous silicon/n-WO 3 nanowires heterojunction

Innovative Organic MEH-PPV Heterojunction Device Made by USP and PVD

Effect of the Functionalization of Porous Silicon/WO3 Nanorods with Pd Nanoparticles and Their Enhanced NO2-Sensing Performance at Room Temperature

Contact Info

Product

Resources

About