Production of carbon nanotube-molecular semiconductor thin film

A method of producing a thin film of an organic molecular semiconductor with uniformly dispersed carbon nanotubes is disclosed. The method comprises adapting the carbon nanotubes and the molecular semiconductor to make them soluble. The molecular semiconductor is also adapted to facilitate high molecular order and frontier orbital overlap between adjacent molecules. The soluble carbon nanotubes and the soluble molecular semiconductor are combined in a solvent to form a solution and a thin film is produced from the solution, e.g. by spin casting. The molecular semiconductor is preferably a porphyrin or phthalocyanine. The thin film is useful as a carrier injection layer in organic electronic devices such as solar cells, organic light emitting diodes, backlights for liquid crystal displays and system on chip devices.