Abstract
Negative carriers have been injected into naphthalene crystals from a contact consisting of the sodium–potassium eutectic which is liquid at room temperature. The voltage dependence of the space‐charge‐limited (scl) current is determined by an exponential distribution of traps in energy. Positive carriers were injected into naphthalene crystals from the redox systems Ag2+/Ag+ in 7.5N HNO3 and Ce4+/Ce3+ in 15N H2SO4 leading for the first system to a space‐charge‐limited current and in the second one to a current–voltage curve which is determined by a field assisted hole injection reaction. Double injection of electrons and holes leads to radiative recombination under emission of the naphthalene fluorescence spectrum.