Lieber and his team start with a single crystal of tantalum diselenide
oriented to display a surface consisting of an array of selenium atoms closely packed into a hexagonal arrangement.
Laurens Siebbeles (TU Delft, Netherlands), the team used standard printing techniques to combine graphene nanosheets as the electrodes with two other nanomaterials, tungsten diselenide
and boron nitride as the channel and separator (two important parts of a transistor) to form an all-printed, all-nanosheet, working transistor.
Japanese company Solar Frontier KK said Monday its copper indium diselenide
(CIS) thin-film solar modules have been selected for a 5MW project in Kuwait.
da Silva et al., "New therapeutic approach: diphenyl diselenide
reduces mitochondrial dysfunction in acetaminophen-induced acute liver failure," PLoS ONE, vol.
Currently, there are three major types of thin-film solar cells: silicon, cadmium telluride (CdTe), and copper indium gallium diselenide
Copper indium gallium diselenide
(CIGS) can achieve the lowest capitalized cost over all other solar cell technologies.
These shingles use copper indium gallium diselenide
solar modules--made by Global Solar Energy, Inc.--that are wrapped in a proprietary Dow plastic.
The new film comes from many subtle improvements in the design and manufacture of a particular type of copper indium gallium diselenide
material, which has been under study for nearly a decade.
When converting carbon dioxide from the atmosphere into a sugar, plants use an organic catalyst called an enzyme; the researchers used a metal compound called tungsten diselenide
, which they fashioned into nanosized flakes to maximize the surface area and to expose its reactive edges.
ZSW recently hit a new record for thin film efficiency with a rate of 21.7%, breaking the record set by First Solar earlier this year, though it uses copper indium gallium diselenide
(CIGS) technology as opposed to the cadmium telluride (CdTe) preferred by the US company.