Thermal annealing dependence of charge injection and transport in the P3HT:graphene nanocomposite based devices

Yadav, Anjali; Upadhyaya, Aditi; Gupta, Saral K.; Negi, Chandra Mohan Singh

doi:10.1016/j.physe.2020.114351

Cited by 9 publications

(3 citation statements)

References 41 publications

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“…10, the vibration peak at wavenumber 1450 cm −1 is attributed to the expansion and contraction of the C=C ring. [47][48][49] The vibration peak at wavenumber 1380 cm −1 is attributed to the expansion and contraction of the C-C skeleton in the ring, and the vibration peak at 1280 cm −1 should be attributed to the inter C-C ring stretching, while the vibration peak at 1186 cm −1 is attributed to C-H bending. The vibration peak at 725 cm −1 is attributed to CSC deformation of the thiophene ring.…”

Section: Raman Spectrummentioning

confidence: 99%

“…The vibration peak at 725 cm −1 is attributed to CSC deformation of the thiophene ring. 49 The Raman spectrum in the range 1350-1500 cm −1 is extremely sensitive to the degree of electron delocalization and the conjugation length in the molecular chain of P3HT, so we focused on analyzing the spectrum in this range and exploring the effect of polarization on the structure of the P3HT molecular chain. It can be seen from Fig.…”

Section: Raman Spectrummentioning

confidence: 99%

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Study on the regulation of polythiophene whiskers by electric field induction and the anisotropy of the film surface

Chen

Zhan

et al. 2021

Polymer International

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In recent years, polythiophene (P3HT) has become a kind of typical conjugated polymer material which is suitable to use on a large scale. However, it is difficult to obtain long P3HT fibers with a highly ordered arrangement due to the entanglement of molecular chains and inherent flexibility. In this work, P3HT fibers were successfully constructed and assembled by an electric-field-induced technique, which can be observed directly. The orientation of the P3HT molecules was confirmed by Raman and UV absorption spectra. The excellent anisotropic sliding properties of the surface of the assembled fibers were characterized by the water contact test. This work provides an idea for the preparation of smart sensing materials and lays a foundation for the wider application of P3HT.

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Section: Raman Spectrummentioning

confidence: 99%

Section: Raman Spectrummentioning

confidence: 99%

Study on the regulation of polythiophene whiskers by electric field induction and the anisotropy of the film surface

Chen

Zhan

et al. 2021

Polymer International

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“…Increasing the annealing temperature results in higher C/O ratios than those obtained using other reduction strategies [17]. This highly reduced graphene oxide allows the restoration of the conjugated structure and usually exhibits improved charge transport capabilities [18]. This makes the highly reduced graphene oxide suitable for high-quality electronic devices [19], sensors [20] and energy storage [21].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Thermal and Laser-Reduced Graphene Oxide Production for Energy Storage Applications

et al. 2023

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A way to obtain graphene-based materials on a large-scale level is by means of chemical methods for the oxidation of graphite to obtain graphene oxide (GO), in combination with thermal, laser, chemical and electrochemical reduction methods to produce reduced graphene oxide (rGO). Among these methods, thermal and laser-based reduction processes are attractive, due to their fast and low-cost characteristics. In this study, first a modified Hummer’s method was applied to obtain graphite oxide (GrO)/graphene oxide. Subsequently, an electrical furnace, a fusion instrument, a tubular reactor, a heating plate, and a microwave oven were used for the thermal reduction, and UV and CO2 lasers were used for the photothermal and/or photochemical reduction. The chemical and structural characterizations of the fabricated rGO samples were performed by Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), scanning electron microscope (SEM) and Raman spectroscopy measurements. The analysis and comparison of the results revealed that the strongest feature of the thermal reduction methods is the production of high specific surface area, fundamental for volumetric energy applications such as hydrogen storage, whereas in the case of the laser reduction methods, a highly localized reduction is achieved, ideal for microsupercapacitors in flexible electronics.

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Silver decorated magnesium doped photoactive layer for improved collection of photo‐generated current in polymer solar cell

Ahmed

Ike

Hamed

et al. 2023

J of Applied Polymer Sci

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Silver doped magnesium (Ag:Mg) bimetallic nanoparticles (BMNPs) were successfully synthesized using wet chemical processing. The collection of enhanced photocurrents is possible through metal nanoparticles in the photoactive layer of a thin‐film organic solar cell (TFOSC). This investigation employed poly‐3‐hexylthiophene(P3HT) and [6‐6]‐phenyl‐C61‐butyric acid methyl ester (PCBM) polymer blend solar absorbers in a conventional device structure. The solar cell performances were found to depend on the concentration of Ag:Mg BMNPs in the photoactive medium. Consequently, significant device performance was recorded for the solar cells containing Ag:Mg BMNPs at all doping levels compared to the un‐doped devices. Therefore, the highest power conversion efficiency (PCE) of 4.11% was achieved at a 1.5 wt% doping level with a high fill factor of 56% compared to the reference cell. The performance improvement in PCE constitutes a 79% improvement, which is much higher than undoped solar cells. This result was attributed to the occurrence of the localized surface plasmon resonance effect (LSPR), which is favorable for boosting the optical absorption and charge transport processes in TFOSC.

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Thermal annealing dependence of charge injection and transport in the P3HT:graphene nanocomposite based devices

Cited by 9 publications

References 41 publications

Study on the regulation of polythiophene whiskers by electric field induction and the anisotropy of the film surface

Study on the regulation of polythiophene whiskers by electric field induction and the anisotropy of the film surface

Comparison of Thermal and Laser-Reduced Graphene Oxide Production for Energy Storage Applications

Silver decorated magnesium doped photoactive layer for improved collection of photo‐generated current in polymer solar cell

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