Carbon nanomaterials in organic photovoltaic cells

Kim, Tae-Hoon; Yang, Seung-Jae; Park, Chong-Rae

doi:10.5714/cl.2011.12.4.194

Cited by 9 publications

(10 citation statements)

References 117 publications

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“…PEDOT: PPS doped with graphene quantum rings (GQRs) ensures the efficient hole extraction in hybrid solar cells and relatively high PCE. Hydrophilic graphene oxide doping in PEDOT: PSS composited films demonstrated a PCE of 1.8 times higher than that of the hybrid electronics based on the pristine PEDOT: PSS buffer layer [97]. diarylfluorene-based triaryldiamine), etc.…”

Section: Spiro-meotad and Pedot:ppsmentioning

confidence: 93%

Fabrication and Characterization of Organic–Inorganic Hybrid Perovskite Devices with External Doping

Shen¹,

Sun²,

Ji³

et al. 2016

Nanoelectronics and Materials Development

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Owing to its excellent light harvesting, high-charge carrier mobility, and long electronand hole-transport lengths, organic-inorganic lead halide perovskite solar cells have attracted enormous attention recently under the urgent demands of green energy with environmental friendliness. Although various photovoltaic architectures based on alkylammonum lead halides have been fabricated and have achieved impressive power conversion efficiencies (PCEs), there are still several issues that need to be further addressed and solved properly, for example, the requirement of facile fabrication procedure, the chemical stability of perovskite films, and the environmental friendliness. Herein, we review the recent experimental progress on the external doping of hybrid perovskite devices by organics and metals, which demonstrate the tuning of optical absorption gap and the enhancement of both devices' stability and performance. Doping at varying layers in the perovskite films was discovered to contribute differently to the improvement of the hybrid organic-inorganic electronics. In the end, prospective was also made on the development of hybrid organic-inorganic devices.

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Section: Spiro-meotad and Pedot:ppsmentioning

confidence: 93%

Fabrication and Characterization of Organic–Inorganic Hybrid Perovskite Devices with External Doping

Shen¹,

Sun²,

Ji³

et al. 2016

Nanoelectronics and Materials Development

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“…With PV devices, ideally photon absorption excites an electron to the conduction band, which leads to the production of electronhole pairs commonly known as excitons (electrostatically charged carriers). Excitons are characterized by a coulombic force (F) as shown in Equation 1 [37].…”

Section: Inorganic Versus Organic Solar Cellsmentioning

confidence: 99%

“…With PV devices, ideally photon absorption excites an electron to the conduction band, which leads to the production of electron–hole pairs commonly known as excitons (electrostatically charged carriers). Excitons are characterized by a coulombic force (F) as shown in Equation .

F = \frac{{italicq}_{1} {italicq}_{2}}{4 π {italicr}^{2} ε {italicε}_{0}}

where q is the charge, r is the distance between charges, ε is the dielectric constant and ε 0 is the permeability in the free state.…”

Section: Introductionmentioning

confidence: 99%

A review on carbon nanotube/polymer composites for organic solar cells

Keru

Ndungu

Nyamori

2014

Int. J. Energy Res.

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SUMMARY Carbon nanotubes (CNTs) have unique properties, such as their electrical conductivity, that enable them to be combined with conducting polymers to form composites for use in organic solar cells (OSCs). It is envisaged that the improved composite has a higher efficiency of green energy and will reduce the cost of these cells. The use of such alternative energy sources also drastically reduces overuse of fossil fuels and consequently limits environmental degradation. This review compares research and performance between conventional silicon solar cells and OSCs. It also discusses OSC photoexcitation and charge carrier generation with the incorporation of CNTs, physicochemical properties of the composites and other factors that affect the efficiencies of OSCs. In addition, properties of CNTs that favour their dispersion in polymer matrices as acceptors and charge carriers to the electrodes are covered. The effects of CNTs containing dopants, such as nitrogen and boron, on charge transfer are discussed. Also, the fabrication techniques of OSCs that include CNT/polymer composite processing and the methods of film deposition on the substrate are described. Finally, the case studies of OSCs containing polymers with single‐walled CNTs, double‐walled CNTs or multi‐walled CNTs are evaluated. Copyright © 2014 John Wiley & Sons, Ltd.

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“…Thus, to date, graphene material-based inks have demonstrated their superiority in a wide range of functionalities, such as flexible interconnections, electrodes, transparent conductors and supercapacitors [12]. Surface electrical resistance values in the range of~100 Ω/ are required for acting as electrode materials in organic or perovskite solar cell devices [13,14]. Thus, in order to establish versatility in the application of a certain conductive material by use of LPP, it is necessary to control the resistivity of the deposited layer.…”

Section: Introductionmentioning

confidence: 99%

Waterborne Graphene- and Nanocellulose-Based Inks for Functional Conductive Films and 3D Structures

et al. 2021

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In the vast field of conductive inks, graphene-based nanomaterials, including chemical derivatives such as graphene oxide as well as carbon nanotubes, offer important advantages as per their excellent physical properties. However, inks filled with carbon nanostructures are usually based on toxic and contaminating organic solvents or surfactants, posing serious health and environmental risks. Water is the most desirable medium for any envisioned application, thus, in this context, nanocellulose, an emerging nanomaterial, enables the dispersion of carbon nanomaterials in aqueous media within a sustainable and environmentally friendly scenario. In this work, we present the development of water-based inks made of a ternary system (graphene oxide, carbon nanotubes and nanocellulose) employing an autoclave method. Upon controlling the experimental variables, low-viscosity inks, high-viscosity pastes or self-standing hydrogels can be obtained in a tailored way. The resulting inks and pastes are further processed by spray- or rod-coating technologies into conductive films, and the hydrogels can be turned into aerogels by freeze-drying. The film properties, with respect to electrical surface resistance, surface morphology and robustness, present favorable opportunities as metal-free conductive layers in liquid-phase processed electronic device structures.

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Carbon nanomaterials in organic photovoltaic cells

Cited by 9 publications

References 117 publications

Fabrication and Characterization of Organic–Inorganic Hybrid Perovskite Devices with External Doping

Fabrication and Characterization of Organic–Inorganic Hybrid Perovskite Devices with External Doping

A review on carbon nanotube/polymer composites for organic solar cells

Waterborne Graphene- and Nanocellulose-Based Inks for Functional Conductive Films and 3D Structures

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