Morphology Control of Nanocrystallized C60 Thin Films Prepared by Poor Solvent Immersion

Umemoto, Kazuki; Takeda, Masaki; Tezuka, Yuki; Doi, Miho; Lyu, Bozhang; Masuhara, Akito

doi:10.3390/technologies6020051

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…The spectrum is recorded in a range of 2θ = 5 − 50°; peaks at 25.6° and 43.2° are attributed to (002) and two-dimensional (10) planes of graphene [40], whereas peaks at 10.6°, 20.4° and 45.1° are attributed to (002) and high index planes of layered 2D C 60 [49] (Fig. S1e).…”

Section: In-situ Formation Of Lfg Patterns and Structural Evaluationmentioning

confidence: 99%

Configurable laterally stacked 2D layered fullerene C60-graphene system with precise spatialization

wu,

Suriyaprakash

2023

Preprint

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All-carbon laterally stacked 2D fullerene C60-graphene hybrid (LFG) systems with strong interfacial coupling at the specified region and configuration are in great demand for micro/nanoelectronics due to their distinct hybridized optoelectronic properties. Such a system with patternable and tunable features at the sub-micron scale is exceptionally challenging to synthesis. Herein, based on the photoactivity of the molecule containing stable 5 and 6 bicyclic carbon rings and the power profile of a Gaussian beam, a unique hybrid system consisting of 2D layered fullerene C60-graphene nanostructure is developed with high spatialization. The formation of C60 clusters and their subsequent linkage, coupled with graphene have emerged in the polymer composite at the defined region as a result of laser-induced photochemical evolution/coupling and photolysis processes. This hybrid system can be freely micropatterned to various intricate designs with a tunable bandgap in the range of 1.85–0.86 eV by simply modulating the irradiation power. Further, the newly designed LFG microarray pattern device offers significant photoresponsivity as high as 1.51 x104 A/W at a very low power of light in a wide spectrum (405–1550 nm). The unique hybrid 2D C60-graphene-2D C60 lateral heterostructure with large interfacial coupling and depletion domain offers optimal photocarrier generation/separation, remarkably enhancing the device's performance. Concerning the benefits of this study, featuring a user-friendly patterning technique, cost-effective instrument, alterable material proportion and high spatialization/interface coupling, allow for the feasible deployment of newly customised functional materials and devices.

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Section: In-situ Formation Of Lfg Patterns and Structural Evaluationmentioning

confidence: 99%

Configurable laterally stacked 2D layered fullerene C60-graphene system with precise spatialization

wu,

Suriyaprakash

2023

Preprint

View full text Add to dashboard Cite

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The effect of substrate deposition temperature on the electrical and optical properties of C60 thin films

Samad

Belanger

Duguay

2022

Journal of Applied Physics

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We report the effects of the substrate deposition temperature on the photovoltaic performance of fullerene (C60) thin films. These thin films were deposited via thermal evaporation at substrate temperatures from 20 to 250 °C. The optical and electrical properties of the films were dependent on the substrate deposition temperature, and improvements in film optical properties were noted for certain temperatures. Both the optical constants n and k and the dielectric constants show theoretical and experimental decreases with the substrate temperature due to the creation of crystalline structures in the thin films. Despite differences between the theoretical and experimental optical constants, the nature of the decrease is similar. The film porosity calculated from the optical constants increased more than 50% for greater substrate temperatures. The conductivity of the films also increased with the substrate temperature and the activation energy ranged from 0.25 to 0.31 eV. We demonstrate an increased energy gap with temperature using a Tauc-plot, and the photopic and solar transmittances improved with the increased substrate temperature during deposition.

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Structural, Morphological, and Spectroscopical Properties of Fullerenes (C60) Thin Film Prepared via Electrospray Deposition

Alani

Alalousi

2021

J. Phys.: Conf. Ser.

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In this study, fullerenes (C60) thin film was prepared via a novel combination of laser pulsed and electrospray methods using wasted batteries’ electrodes as precursor. The effect of the applied electric potential using electrospray process was investigated through the structural, morphological and optical analyses. These in turn were examined using x-ray diffraction, field emission scanning electron microscopy, energy dispersive spectroscopy, and photoluminescence techniques. In particular, using Williamson-Hall relation, the average crystallite size of the prepared nanoparticles was estimated in which it was found in the range of 41.46-111.84 nm. While sample treated with 5.6 kV of electric potential exhibited particle size of 6.35 nm using FESEM technique as compared to 7.4 nm for sample prepared under free potential. It is believed that the applied electric potential plays a vital role in reducing the particle size which in turn provides an alternative pathway for fabricating future optoelectronic design.

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Morphology Control of Nanocrystallized C60 Thin Films Prepared by Poor Solvent Immersion

Cited by 4 publications

References 25 publications

Configurable laterally stacked 2D layered fullerene C60-graphene system with precise spatialization

Configurable laterally stacked 2D layered fullerene C60-graphene system with precise spatialization

The effect of substrate deposition temperature on the electrical and optical properties of C60 thin films

Structural, Morphological, and Spectroscopical Properties of Fullerenes (C60) Thin Film Prepared via Electrospray Deposition

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