Abstract: A photoactive device includes a photoactive region disposed between and electrically connected to two electrodes where the photoactive region includes a first organic photoactive layer comprising a first donor material and a second organic photoactive layer comprising a first acceptor material. The first donor material contains photoactive polymer-wrapped carbon nanotubes and the photoactive region includes one or more additional organic photoactive material layers disposed between the first donor material layer and the acceptor material layer. The photoactive region creates excitons upon absorption of light in the range of about 400 nm to 1450 nm.

Abstract: Methods for forming a nanoperforated graphene material are provided. The methods comprise forming an etch mask defining a periodic array of holes over a graphene material and patterning the periodic array of holes into the graphene material. The etch mask comprises a pattern-defining block copolymer layer, and can optionally also comprise a wetting layer and a neutral layer. The nanoperforated graphene material can consist of a single sheet of graphene or a plurality of graphene sheets.

Abstract: A photovoltaic device includes a photoactive region disposed between and electrically connected to two electrodes where the photoactive region includes photoactive polymer-wrapped carbon nanotubes that create excitons upon absorption of light in the range of about 400 nm to 1400 nm.

Abstract: The present teachings provide methods for providing populations of single-walled carbon nanotubes that are substantially monodisperse in terms of diameter, electronic type, and/or chirality. Also provided are single-walled carbon nanotube populations provided thereby and articles of manufacture including such populations.

Abstract: The separation of single-walled carbon nanotubes (SWNTs), by chirality and/or diameter, using centrifugation of compositions of SWNTs in and surface active components in density gradient media.

Abstract: A photovoltaic device includes a photoactive region disposed between and electrically connected to two electrodes where the photoactive region includes photoactive polymer-wrapped carbon nanotubes that create excitons upon absorption of light in the range of about 400 nm to 1400 nm.

Abstract: The separation of single-walled carbon nanotubes (SWNTs), by chirality and/or diameter, using centrifugation of compositions of SWNTs in and surface active components in density gradient media.

Abstract: A photoactive device includes a photoactive region disposed between and electrically connected to two electrodes where the photoactive region includes a first organic photoactive layer comprising a first donor material and a second organic photoactive layer comprising a first acceptor material. The first donor material contains photoactive polymer-wrapped carbon nanotubes and the photoactive region includes one or more additional organic photoactive material layers disposed between the first donor material layer and the acceptor material layer. The photoactive region creates excitons upon absorption of light in the range of about 400 nm to 1450 nm.

Abstract: The separation of single-walled carbon nanotubes (SWNTs), by chirality and/or diameter, using centrifugation of compositions of SWNTs in and surface active components in density gradient media.

Abstract: The present teachings provide methods for providing populations of single-walled carbon nanotubes that are substantially monodisperse in terms of diameter, electronic type, and/or chirality. Also provided are single-walled carbon nanotube populations provided thereby and articles of manufacture including such populations.

Abstract: A forehearth for the conveyance and temperature maintenance of molten glass includes a longitudinal cooling zone over a laterally-extending cooling tile panel which is spaced above and spans an elongated trough supporting the molten glass. Roof structure of the forehearth has a pair of spaced-apart projections jutting downwardly and defining a central cooling area over the molten glass, and the central cooling area is flanked by longitudinally-extending firing chambers. Linear parallel grooves, recessed within at least one broad surface of the cooling tile panel, increase the rate of heat transfer to a longitudinally-extending air flow cavity above the cooling tile panel. The cavity has spaced air inlets along its sides that communicate with the parallel grooves of the panel and direct pressurized cooling air in laterally converging paths through the grooves and thence outwardly through a centrally located exhaust opening.