scholarly journals Carbon nanotubes grown on In2O3:Sn glass as large area electrodes for organic photovoltaics

2007 ◽  
Vol 90 (2) ◽  
pp. 023105 ◽  
Author(s):  
Anthony J. Miller ◽  
Ross A. Hatton ◽  
G. Y. Chen ◽  
S. Ravi P. Silva
Keyword(s):  
Carbon Nanotubes ◽  
Organic Photovoltaics ◽  
Large Area

Changes in Optimal Ternary Additive Loading when Processing Large Area Organic Photovoltaics by Spin‐ versus Blade‐Coating Methods

Solar RRL ◽  
2021 ◽  
Vol 5 (10) ◽  
pp. 2100432
Author(s):  
Chithiravel Sundaresan ◽  
Salima Alem ◽  
Chase L. Radford ◽  
Trevor M. Grant ◽  
Timothy L. Kelly ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Large Area ◽  
Coating Methods ◽  
Blade Coating

Study of organic photovoltaics by localized concentrated sunlight: Towards optimization of charge collection in large-area solar cells

2011 ◽  
Vol 99 (17) ◽  
pp. 173305 ◽  
Author(s):  
Assaf Manor ◽  
Eugene A. Katz ◽  
Ronn Andriessen ◽  
Yulia Galagan
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Charge Collection ◽  
Large Area

scholarly journals Will organic thermoelectrics get hot?

2019 ◽  
Vol 377 (2152) ◽  
pp. 20180352 ◽  
Author(s):  
Mariano Campoy-Quiles
Keyword(s):  
Carbon Nanotubes ◽  
Persistence Length ◽  
Charge Carrier Mobility ◽  
Small Scale ◽  
Heat Sources ◽  
Low Carbon ◽  
Energy Materials ◽  
Thermoelectric Efficiency ◽  
Large Area ◽  
Low Toxicity

The generally low energy density from most heat sources—the Sun, Earth as well as most human activities—implies that solid-state thermoelectric devices are the most versatile heat harvesters since, unlike steam engines, they can be used on a small scale and at small temperature differences. In this opinion piece, we first discuss the materials requirements for the widespread use of thermoelectrics. We argue that carbon-based materials, such as conducting polymers and carbon nanotubes, are particularly suited for large area and low-temperature operation applications, as they are abundant, low-toxicity and easy to process. We combine experimentally observed macro-trends and basic thermoelectric relations to evaluate the major performance limitations of this technology thus far and propose a number of avenues to take the thermoelectric efficiency of organic materials beyond the state of the art. First, we emphasize how charge carrier mobility, rather than charge density, is currently limiting performance, and discuss how to improve mobility by exploiting anisotropy, high persistence length materials and composites with long and well-dispersed carbon nanotubes. We also show that reducing thermal conductivity could double efficiency while reducing doping requirements. Finally, we discuss several ways in which composites could further boost performance, introducing the concept of interface engineering to produce phonon stack-electron tunnel composites. This article is part of a discussion meeting issue ‘Energy materials for a low carbon future'.

scholarly journals Ultra-Flexible Organic Photovoltaics with Nanograting Patterns Based on CYTOP/Ag Nanowires Substrate

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2185
Author(s):  
Soo Won Heo
Keyword(s):  
Organic Photovoltaics ◽  
Solution Process ◽  
Transparent Electrode ◽  
Portable Devices ◽  
Large Area ◽  
Initial Value ◽  
Polymer Substrates ◽  
Optical Polymer ◽  
Nanowire Network ◽  
Ito Glass

In this study, we developed a method for fabricating ultrathin polymer substrates that can be used in ultra-flexible organic photovoltaics (OPVs) via a non-vacuum process using cyclic transparent optical polymer. In addition, a Ag nanowire network layer was used as a transparent electrode in a solution process. All processes were conducted on large area via spin coating. The power conversion efficiency (PCE) of the ultra-flexible OPV improved by 6.4% compared to the PCE of the ITO/Glass-based OPV. In addition, the PCE of the OPV increased to 10.12% after introducing nanostructures in the ZnO and photoactive layers. We performed 1000 cycles of compression/relaxation tests to evaluate the mechanical properties of the ultra-flexible OPV, after which, the PCE remained at 67% of the initial value. Therefore, the developed OPV system is suitable as a power source for portable devices.

Carbon Nanotubes: Present and Future Commercial Applications

Science ◽  
2013 ◽  
Vol 339 (6119) ◽  
pp. 535-539 ◽  
Author(s):  
Michael F. L. De Volder ◽  
Sameh H. Tawfick ◽  
Ray H. Baughman ◽  
A. John Hart
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Chemical Modification ◽  
Production Capacity ◽  
Rechargeable Batteries ◽  
Large Area ◽  
Automotive Parts ◽  
Sporting Goods ◽  
Commercial Applications ◽  
Water Filters

Worldwide commercial interest in carbon nanotubes (CNTs) is reflected in a production capacity that presently exceeds several thousand tons per year. Currently, bulk CNT powders are incorporated in diverse commercial products ranging from rechargeable batteries, automotive parts, and sporting goods to boat hulls and water filters. Advances in CNT synthesis, purification, and chemical modification are enabling integration of CNTs in thin-film electronics and large-area coatings. Although not yet providing compelling mechanical strength or electrical or thermal conductivities for many applications, CNT yarns and sheets already have promising performance for applications including supercapacitors, actuators, and lightweight electromagnetic shields.

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