Sumitomo 3M Ltd exhibited the "See-through Photovoltaic Power Generation Film (tentative name)" at CEATEC Japan 2011 and had a demonstration of generating electricity and insulating heat at the same time.
The film, which the company plans to release in 2012, was developed by attaching a heat-insulating see-through resin film to organic thin-film photovoltaic (PV) cells developed by 3M Company and others and forming a large-area sheet.
Sumitomo 3M employed translucent PV cells, expecting that the new film will be attached to the windows of buildings, etc. Also, the company used conductive resin for the electrodes of the film so that the entire film becomes transparent or translucent.
At the trade show, strong light was emitted from a lamp to the film, and temperatures were measured in front of and behind the film. While the temperature on the side of the lamp was about 40°C, the temperature behind the film was about 27°C, creating a temperature difference of more than 10°C.