Graphene Device Sops Up Sunlight, Heats to 160 Degrees Celsius in Seconds

Researchers from three Australian universities have collaborated to develop a light-absorbing device using a new graphene-based film that can absorb unpolarized incident light striking it over a wide range of angles up to 60 degrees. Eight researchers from Swinburne University of Technology, the University of Sydney, and Australian National University worked together to develop an experimental 2.5 cm x 5 cm prototype device employing the graphene-based film that has approximately 85 percent absorptivity of unpolarized light. A multilayer structure is necessary given that a single graphene layer has a light absorption rate of only 2.3 percent.

Source: spectrum.ieee.org