Long-Lived Photoinduced Charge Separation in (Zinc, Lead) Phosphate Glass–C60 Composites


  • Financial support from the Department of Science and Technology, New Delhi, Government of India, is gratefully acknowledged.


A group of (zinc, lead) phosphate glass–C60 composites that display long-lived photoinduced electron transfer from the Pb2+ center to the fullerene upon 230–400 nm UV irradiation has been developed. Both the steady state photoinduced absorption and photoinduced electron spin resonance spectra of the irradiated system support this view. Analysis of the carrier dynamics suggests that the electrons migrate from the hole sites to the fullerene sites in a tunneling mode.