Gesimat has developed a new type of smart glazing. This innovation is based on the phenomenon of electrochromism.

Our smart electrochromic glazing are unique because of its combination of the automatic regulation of the light and heat transmittance with the properties of laminated safety glass and sound control glazings.

These smart windows are made of two glass panes which are laminated together with an ion conducting polymer foil. The glass panes are coated with an electrochromic film. These films can change their color in response to an applied voltage. By this process the light and heat transmission and reflection properties of the laminated glass can be altered. The light and heat transmittance can be regulated automatically. The ion conducting interlayer between the glass panes is responsible for the transport of ionic charges.

Our electrochromic laminated glazing is different from other development concepts for electrochromic glazings because of the use of

• two complementary electrochromic layers
  
• an electrochemical deposition technique for the electrochromic layers
  
• and the use of a mechanically strong, ion conducting polymer sheet.

Transmission T and reflection R of the Gesimat
electrochromic laminated glazing in fully colored and bleached state

Presently we are preparing the construction of a pilot production plant.