Kaskela A.,Aalto University |
Nasibulin A.G.,Aalto University |
Timmermans M.Y.,Aalto University |
Aitchison B.,Canatu Oy |
And 8 more authors.
Nano Letters | Year: 2010
We demonstrate an aerosol CVD process to dry deposit large-area SWCNT networks with tunable conductivity and optical transmittance on a wide range of substrates including flexible polymers. These SWCNT networks can be chemically doped to reach a sheet resistance of as low as 110 Ω/ at 90% optical transmittance. A wide application potential of these networks is demonstrated by fabricating SWCNT network-based devices such as a transparent capacitive touch sensors, thin-film transistors (TFTs), and bright organic light-emitting diodes (OLEDs). © 2010 American Chemical Society.
Solarno, Inc and The Board Of Regents Of The University Of Texas System | Date: 2014-03-15
The present invention provides a method for making a highly efficient and inexpensive solar selective coating. Coating consists of various carbon nanotube sheets composite layers, each performing a specific function by incorporating functional materials and components with proper structure. Joule heating of the described solar selective coating allows for efficient functionality even when solar energy is not available.
Solarno, Inc and The Board Of Regents Of The University Of Texas System | Date: 2012-01-24
The claimed invention uses activated carbon fibers that incorporate porous carbon with a suitable pore size to maximize capacitance. The porous carbon material is prepared using a template, followed by incorporation into a matrix polymer and electrospinning of the mixture. Subsequent thermal treatments retain the fiber form, and a composite carbon fiber incorporating templated porous carbon is attained. The resulting electrode is binder free and 100% electrochemically active. Energy densities up to 41 Wh/kg in energy density 1.5 kW/kg in power density (electrode weight only) have been achieved.
Agency: Department of Energy | Branch: | Program: STTR | Phase: Phase I | Award Amount: 100.00K | Year: 2009
White organic light emitting diodes (OLEDs) have become well recognized as an important candidate for future lighting products. However, outstanding challenges with respect to efficiency and degradation processes remain. Previous work on tandem OLED technology has produced devices with increased, brightness, efficiency, and lifetime. However, it was found that the interconnecting layer is crucial to device operation and requires delicate handling, as well as evaporation or sputtering techniques. Carbon nanotube sheets, which have excellent electrical and optical properties, could be used as alternative interconnecting layers. Also, the use of carbon nanotube sheets could simplify the fabrication process. Therefore, this project will utilize a carbon nanotube hole-injecting interlayer in the development of bright, high efficiency white tandem OLEDs. The proposed concept involves a parallel connection of the electroluminescent units in the tandem configuration. The parallel configuration reduces operating current and increases lifetime. Commercial Applications and other Benefits as described by the awardee: Bright, high-efficiency white tandem OLED can play an important role in the multi-billion dollar lighting and display market
Solarno, Inc and The Board Of Regents Of The University Of Texas System | Date: 2014-08-08
An objective of the invention is to design and develop an effective method to collect and store heat in a solar collector for delayed release. An embodiment of the invention is directed to an evacuated tube collector, where PCM is placed directly inside the void space of the collector tube, next to the heat pipe. The heat pipe is located with phase change material (PCM) in such a way that its thermal connection with the heat pipe can be switched ON to start heat transfer from PCM or OFF to keep latent heat stored in PCM for delayed usage. In additional, flow of heat exchange fluid through the manifold can enable release of stored heat of PCM to storage tank. Delayed release of accumulated heat in PCM enables added functionality of on-demand operation of SWH.