FIELD: manufacture of solar energy converters. SUBSTANCE: method involves creating microprojections disposed in close relation one with respect to another and consisting of smaller projections, with height of microprojections being up to 5 microns and cross sizes within the range of 1-1.5 microns. Microprojections are created on metal surface by heating and ionic bombardment combined with deposition by, for instance, cathodic spraying of atoms of one or two metals different from mentioned metal. Product may be manufactured from any metal or alloy. Absorption coefficient of layer reached 95%, natural radiation reduced to 2-15%. Optical characteristics of absorbing layer did not change at angles of 0-60 deg from normal. Absorbing layer deposited on copper surface did not break during thermal cycling by vacuum heating from room temperature to temperature of 100 C. EFFECT: increased radiant-heat energy conversion coefficient, wider range of conversion temperature limits and metals used in the process and employment of clean technologies. 5 cl, 2 dwg
