'Organic metals': Acceptor stack doping in the charge-transfer salt tetraselenafulvalene-tetracyano-p-quinodimethane (TSeF-TCNQ)

Doping of methyltetracyano-p-quinodimethane into the 'organic metal' tetraselenafulvalene-tetracyano-p-quinodimethane obscures the phase transition at 28 K and increase the conductivity at 4 K by four orders of magnitude.