Visible light detection using single-walled carbon nanotube film and gold nanoparticles or nanorods

Visible light sensing devices using single-walled carbon nanotube (SWNT) film and gold nanoparticles or nanorods were reported. In the devices, half of the SWNT film was decorated with gold nanoparticles or nanorods. When visible light is incident on the device, a temperature difference can be built up between the SWNT film with and without gold nanoparticles (nanorods) due to surface plasmon resonance. As a result, an open circuit voltage can be obtained. The V_oc induced and responsivities of these devices are closely related to the wavelength and the intensity of the incident light, indicating the application in visible light detecting.