Improved energy harvesting using well-aligned ZnS nanoparticles in bulk-heterojunction organic solar cell

Dlamini, Mpilo W.; Hamed, Mohammed S. G.; Mbuyise, Xolani G.; Mola, Genene Tessema

doi:10.1007/s10854-020-03481-w

Cited by 24 publications

(9 citation statements)

References 24 publications

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“…However, the photoactive layer often has issues, such as low optical absorption in the visible range, the need for more energy to dissociate the strongly bound photogenerated excitons, the presence of defects and charge carrier traps, short lifetime of charge carriers owing to recombination, discontinuous pathways for charge carrier transport, poor charge carrier mobility due to the hopping transport mechanism, and long-term instability due to degradation of the active layer materials (Paul et al, 2017;Subramanyam et al, 2020). Hence, traditional active layer materials need to be replaced or modified; to broaden the absorption spectrum for effective photon absorption and exciton generation; to increase the donor-acceptor interfacial area for significant exciton dissociation; to provide additional conductive networks for efficient charge carrier transport; and to The most commonly used donor and acceptor materials are the p-type semiconducting polymer, P3HT, and fullerene, PCBM, respectively (Lim et al, 2018;Rathore et al, 2018;Dlamini et al, 2020;Gao et al, 2020;Milanovich et al, 2020;Ghosekar and Patil, 2021). This is due to the merits of P3HT, such as outstanding solubility in organic solvents, high absorption in the visible region, enhanced crystallinity, excellent charge carrier mobility and high stability (Khanh et al, 2020).…”

Section: Active Layermentioning

confidence: 99%

“…The most commonly used donor and acceptor materials are the p-type semiconducting polymer, P3HT, and fullerene, PCBM, respectively ( Lim et al, 2018 ; Rathore et al, 2018 ; Dlamini et al, 2020 ; Gao et al, 2020 ; Milanovich et al, 2020 ; Ghosekar and Patil, 2021 ). This is due to the merits of P3HT, such as outstanding solubility in organic solvents, high absorption in the visible region, enhanced crystallinity, excellent charge carrier mobility and high stability ( Khanh et al, 2020 ).…”

Section: Active Layermentioning

confidence: 99%

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Recent Applications of Carbon Nanotubes in Organic Solar Cells

et al. 2022

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In recent years, carbon-based materials, particularly carbon nanotubes (CNTs), have gained intensive research attention in the fabrication of organic solar cells (OSCs) due to their outstanding physicochemical properties, low-cost, environmental friendliness and the natural abundance of carbon. In this regard, the low sheet resistance and high optical transmittance of CNTs enables their application as alternative anodes to the widely used indium tin oxide (ITO), which is toxic, expensive and scarce. Also, the synergy between the large specific surface area and high electrical conductivity of CNTs provides both large donor-acceptor interfaces and conductive interpenetrating networks for exciton dissociation and charge carrier transport. Furthermore, the facile tunability of the energy levels of CNTs provides proper energy level alignment between the active layer and electrodes for effective extraction and transportation of charge carriers. In addition, the hydrophobic nature and high thermal conductivity of CNTs enables them to form protective layers that improve the moisture and thermal stability of OSCs, thereby prolonging the devices’ lifetime. Recently, the introduction of CNTs into OSCs produced a substantial increase in efficiency from ∼0.68 to above 14.00%. Thus, further optimization of the optoelectronic properties of CNTs can conceivably help OSCs to compete with silicon solar cells that have been commercialized. Therefore, this study presents the recent breakthroughs in efficiency and stability of OSCs, achieved mainly over 2018–2021 by incorporating CNTs into electrodes, active layers and charge transport layers. The challenges, advantages and recommendations for the fabrication of low-cost, highly efficient and sustainable next-generation OSCs are also discussed, to open up avenues for commercialization.

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Section: Active Layermentioning

confidence: 99%

Section: Active Layermentioning

confidence: 99%

Recent Applications of Carbon Nanotubes in Organic Solar Cells

et al. 2022

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“…Plasmonic is an emerging field that makes use of the nano scale properties of metals. Though plasmonic is a wide area of study, its application for solar cells has seen a recent surge of interest [23,24]. Metals support surface plasmons that are the collective oscillation of excited free electrons and characterized by a resonant frequency [25,26].…”

Section: Introductionmentioning

confidence: 99%

Morphological investigation and 3D simulation of plasmonic nanostructures to improve the efficiency of perovskite solar cells

Mohammadi¹

2023

Preprint

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The process of absorbing light in perovskite solar cells (PSC) is one of the effective factors in improving the performance of this type of cells. Using arrays of metal nanostructures on semiconductors such as perovskite (CH3NH3PbI3), the amount of light absorption in these layers is significantly increased. Metal nanostructures have been considered for their ability to excite plasmons (Collective oscillations of free electrons). Noble metal nanoparticles placed inside solar cells, by increasing the scattering of the incident light, effectively increase the optical absorption inside PSCs. Increasing the optical absorption increases the electric current generated in the photovoltaic device. In this study, by calculating the cross-sectional area of dispersion and absorption on gold (Au) nanoparticles, the effects of the position of nanoparticles in the active layer and their morphology on the increase of absorption within the PSC were investigated. The proper position of the plasmonic nanoparticle was obtained in the middle of the active layer. In a three-dimensional (3D) simulation, the proper position of the plasmonic nanoparticle was obtained in the middle of the active layer. Then, three different morphologies of nano-sphere, nano-star and nano-cubes were investigated, and the short-circuit currents (Jsc) for these three nanostructures were 19.01 (mA/cm2), 18.66 (mA/cm2) and 20.03(mA/cm2) respectively. In this study, the best morphology of the nanostructure according to the Jsc was related to the nano-cube, in which the device power conversion efficiency (PCE) was equal to 16.20%, which is about 15% better than the PSC with the planar architecture.

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“…Similar to polymers, certain types of nanomaterials, such as carbon-based allotropes [ 42 , 43 , 44 ] and metallic nanomaterials [ 45 , 46 , 47 ], have been used as processed materials to form sensors. The carbon allotropes include Carbon Nanotubes (CNTs) [ 48 , 49 , 50 ], graphene [ 51 , 52 , 53 ], and graphite [ 54 , 55 , 56 ], while some of the types of metallic nanomaterials are nanoparticles [ 57 , 58 ], nanoribbons [ 59 , 60 ], and nano-beads [ 61 , 62 ].…”

Section: Introductionmentioning

confidence: 99%

Wearable Sensors for Healthcare: Fabrication to Application

Mukhopadhyay

Suryadevara

Nag

2022

Sensors

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This paper presents a substantial review of the deployment of wearable sensors for healthcare applications. Wearable sensors hold a pivotal position in the microelectronics industry due to their role in monitoring physiological movements and signals. Sensors designed and developed using a wide range of fabrication techniques have been integrated with communication modules for transceiving signals. This paper highlights the entire chronology of wearable sensors in the biomedical sector, starting from their fabrication in a controlled environment to their integration with signal-conditioning circuits for application purposes. It also highlights sensing products that are currently available on the market for a comparative study of their performances. The conjugation of the sensing prototypes with the Internet of Things (IoT) for forming fully functioning sensorized systems is also shown here. Finally, some of the challenges existing within the current wearable systems are shown, along with possible remedies.

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Improved energy harvesting using well-aligned ZnS nanoparticles in bulk-heterojunction organic solar cell

Cited by 24 publications

References 24 publications

Recent Applications of Carbon Nanotubes in Organic Solar Cells

Recent Applications of Carbon Nanotubes in Organic Solar Cells

Morphological investigation and 3D simulation of plasmonic nanostructures to improve the efficiency of perovskite solar cells

Wearable Sensors for Healthcare: Fabrication to Application

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