The invention relates to the use of a platinum-dicyano-bisisocyanide complex cluster, having a small ΔE distance, in particular between 500 cm−1 and 3000 cm−1, between the lowest triplet state and the overlying singlet state that is populated by means of thermal repopulation from the triplet, in an organic-electronic device for emission of blue light and for absorption in the ultraviolet and blue spectral range. The invention also relates to the use of the singlet harvesting method. Furthermore, the invention relates to the use of the high degrees of absorption of such platinum-dicyano-bisisocyanide complex clusters.