Photoconductivity and its temperature dependence have been measured for both oxygen-exposed and nonexposed C-60 thin films. A constant activation energy for different wavelengths, together with the insensitivity of luminescence emission spectrum to excitation energy, suggests a molecular excitonic nature of solid C-60’s electronic states. Luminescence excitation spectra show that emission efficiency is higher for the excitation of forbidden states than allowed states, A turning point at 250-260K has been found in a luminescence vs. temperature curve and is discussed in relation to the phase transition from fee to sc.