Organic electronic device comprising an inverse coordination complex and a method for preparing the same

An organic electronic device comprising at least one inverse coordination complex, the inverse coordination complex comprising:

• (i) a core consisting of one atom or of a plurality of atoms forming together a covalent cluster;
• (ii) a first coordination sphere consisting of at least four electropositive atoms having each individually an electronegativity according to Allen of less than 2.4;
• and
• (iii) a second coordination sphere comprising a plurality of ligands;
• wherein the first coordination sphere is closer to the core than the second coordination sphere;
• all atoms of the core have a higher electronegativity according to Allen than any of the electropositive atoms of the first coordination sphere;
• and
• at least one ligand of the second coordination sphere is covalently bound to at least two atoms of the first coordination sphere;
• wherein the organic electronic device comprises, between a first electrode and a second electrode, an organic semiconducting layer comprising the at least one inverse coordination complex,
• wherein the organic semiconducting layer is a charge injection layer, a charge transport layer, or a charge generation layer, and
• wherein the charge injection layer is a hole injection layer, the charge transport layer is a hole transport layer, and/or the charge generation layer is a hole generation layer.