Abstract: A radiative surface comprises a film comprising: a semi-interpenetrated or interpenetrated network of a first ion-conducting polymer and of a second electron- and electrochrome-conducting polymer; and an electrolyte for impregnating the network; the film comprising a first face intended to be in contact with the solar radiations, the first face being covered with a first metallic layer in order to reduce the absorptivity of the solar radiations. A method for creating the radiative surface is also provided.