Before revision: "Organic and Inorganic Photochemistry" V. Ramamurthy and Kirk S. Schanze 1998 Marcel Dekker ISBN 0-8247-0174-7 Due to PET a charge separation is generated, i.e., redox reaction takes place in excited state (this phenomena is not observed in Dexter electron transfer).
After revision: "Organic and Inorganic Photochemistry" V. Ramamurthy and Kirk S. Schanze 1998 Marcel Dekker ISBN 0-8247-0174-7 Due to PET a charge separation is generated, i.e., redox reaction takes place in excited state (this phenomenon is not observed in Dexter electron transfer).