Single-walled carbon nanotube transparent conductive films fabricated by reductive dissolution and spray coating for organic photovoltaics

Ostfeld, Aminy E.; Catheline, Amélie; Ligsay, Kathleen; Kim, Kee-Chan; Chen, Zhihua; Facchetti, Antonio; Fogden, Siân; Arias, Ana Claudia

doi:10.1063/1.4904940

Cited by 35 publications

(22 citation statements)

References 31 publications

(38 reference statements)

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“…Under low light, optical transparency is more important than low resistivity, thus indium tin oxide (ITO) may not be the best choice anymore, as carbon based materials, for example, can offer better light transmittance. [45,46]…”

Section: Optimization Of Solar Cells For Indoor Lightmentioning

confidence: 99%

Organic solar cells and fully printed super-capacitors optimized for indoor light energy harvesting

et al. 2016

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Flexibility, lightness and printability make organic solar cells (OSC) strong candidates to power low consumption devices such as envisioned for the Internet of Things. Such devices may be placed indoors, where light levels are well below typical outdoors level. Here, we demonstrate that maximizing the efficiency of OSC for indoor operation requires specific device optimization. In particular, minimizing the dark current of the solar cells is critical to enhance their efficiency under indoor light. Cells optimized for sunlight reach 6.2 % power conversion efficiency (PCE). However when measured under simulated indoor light conditions, the PCE is to 5.2 %. Cells optimized for indoor operation yield 7.6 % of PCE under indoor conditions. As a proof-of-concept, the solar cells are combined with fully printed super-capacitors to form a photo-rechargeable system. Such a system with a 0.475 cm 2 indoor-optimized solar cell achieved a total energy conversion and storage efficiency (ECSE) of 1.57 % under 1-sun, providing 26 mJ of energy and 4.1 mW of maximum power. Under

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Section: Optimization Of Solar Cells For Indoor Lightmentioning

confidence: 99%

Organic solar cells and fully printed super-capacitors optimized for indoor light energy harvesting

et al. 2016

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“…The main issue of using carbon nanotubes as materials to form thin network sheets as transparent electrodes is again the trade-off between transmittance at optical wavelengths and sheet resistance [93][94][95][96][97][98][99], as shown in Figure 7 [100].…”

Section: Single-wall and Multi-wall Carbon Nanotubesmentioning

confidence: 99%

Carbon Allotropes as ITO Electrode Replacement Materials in Liquid Crystal Devices

Dierking

2020

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Indium tin oxide (ITO)-free optoelectronic devices have been discussed for a number of years in the light of a possible indium shortage as demand rises. In particular, this is due to the largely increased number of flat panel displays and especially liquid crystal displays (LCDs) being produced for home entertainment TV and mobile technologies. While a shortage of primary indium seems far on the horizon, nevertheless, recycling has become an important issue, as has the development of ITO-free electrode materials, especially for flexible liquid crystal devices. The main contenders for new electrode technologies are discussed with an emphasis placed on carbon-based materials for LCDs, including composite approaches. At present, these already fulfil the technical specifications demanded from ITO with respect to transmittance and sheet resistance, albeit not in relation to cost and large-scale production. Advantages and disadvantages of ITO-free technologies are discussed, with application examples given. An outlook into the future suggests no immediate transition to carbon-based electrodes in the area of LCDs, while this may change in the future once flexible displays and environmentally friendly smart window solutions or energy harvesting building coverings become available.

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“…Improvement of OPV performance and manufacturing scalability is ongoing. For example, there has been a great effort to replace the incumbent transparent electrode material used in OPVs, indium tin oxide, with low-cost, high-conductivity, flexible and solution-processable alternatives such as metal grid/conducting polymer composites [48], carbon nanotube networks [49,50], or silver nanowire networks [51]. Vacuum deposited low work function metals, typically used as the electron collecting electrode, are also being replaced with electrodes based on solution-processed organic materials [52] or metal oxides [53], enabling fully solution processed devices [39,42,[54][55][56].…”

Section: Organicsmentioning

confidence: 99%

Flexible photovoltaic power systems: integration opportunities, challenges and advances

Ostfeld

Arias

2017

Flex. Print. Electron.

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Photovoltaic power systems, consisting of solar modules, energy storage, and power management electronics, are of great importance for applications ranging from off-grid and portable power to ambient light harvesting for sensor nodes. Co-design and integration of the components using printing and coating methods on flexible substrates enable the production of effective and customizable systems for these diverse applications. In this article, we review photovoltaic module and energy storage technologies suitable for integration into flexible power systems. We discuss the design of electrical characteristics for these systems that enable them to power desired loads efficiently, as well as strategies for physically combining the components. Functions and design considerations of power management electronics are presented along with recent progress toward printed and flexible power electronics. We analyze both hybrid and fully flexible photovoltaic systems and the critical role of the application in the choices of materials and architectures for the system components.

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Single-walled carbon nanotube transparent conductive films fabricated by reductive dissolution and spray coating for organic photovoltaics

Cited by 35 publications

References 31 publications

Organic solar cells and fully printed super-capacitors optimized for indoor light energy harvesting

Organic solar cells and fully printed super-capacitors optimized for indoor light energy harvesting

Carbon Allotropes as ITO Electrode Replacement Materials in Liquid Crystal Devices

Flexible photovoltaic power systems: integration opportunities, challenges and advances

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