TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Parameters: The compound comprises at least two unoccupied molecular orbitals having energy levels between the energy level of the lowest unoccupied molecular orbital of a corresponding electron donor compound and about 1 eV less than the energy level of the lowest unoccupied molecular orbital of the corresponding electron donor compound; where one of the molecular orbitals is the lowest unoccupied molecular orbital of the claimed compound. The compound comprises at least two unoccupied molecular orbitals having energy levels between about -4.0 eV and -1.0 eV; and where one of the molecular orbitals is the lowest unoccupied molecular orbital; the compound comprises at least two unoccupied molecular orbitals having energy levels between about -3.6 eV and -2.2 eV; and where one of the molecular orbitals is the lowest unoccupied molecular orbital; or the compound comprises at least two unoccupied molecular orbitals having energy levels between about -3.50 eV and -2.60 eV; and where one of the molecular orbitals is the lowest unoccupied molecular orbital. It exhibits an excited state of its anion at an energy level less than 0.5eV relative to the energy level of the neutral anion. Preferred Compound: The compound has a formula RX2C-CX2R. The chromophore R is selected from, but not limited to, formulae 1-5.R'=-H, -NH2, Ph2 or CF3.R'=-H, -CH3, or NH2.The organic electron acceptor compound is selected from N(R4)+, H2CR2 (preferred), P(R4)+, and N(R2)+. It comprises at least two unoccupied molecular orbitals having energy levels between the energy level of the lowest unoccupied molecular orbital of the electron donor compound and about 1 eV less than the energy level of the lowest unoccupied molecular orbital of the electron donor compound; where one of the molecular orbitals is the lowest unoccupied molecular orbital of the electron acceptor compound. The electron donor compound is poly-(3-hexylthiophene). Preferred Component: The material is a bulk material or a film, for example a thin film. Preferred Definitions:    R=formula 6; and    X=independently selected from H (preferred) and an alkyl group, in particular alkyl, preferably 6-12C alkyl.    EXAMPLE - No suitable example given.