FIELD: construction. SUBSTANCE: wall member consists of two laminated glass panes, heat-insulating layer between glass panes, e.g., air layer, or layer of noble gas, and surface photoelectric unit located between glass panes and heat-insulating layer. Photoelectric unit may be made of transparent semiconducting material. Such wall member design makes it possible to use solar energy as light and heat energy in compliance with its spectral distribution, as well as, electric power after conversion with the help of photoelectric cell. EFFECT: higher efficiency. 18 cl, 8 dwg
