The Effect of Ionization Potential and Film Morphology on Exciplex Formation and Charge Generation in Blends of Polyfluorene Polymers and Silole Derivatives - Dyer-Smith,C; Benson-Smith,JJ; Bradley,DDC; Murata,H; Mitchell,WJ; Shaheen,SE; Haque,SA; Nelson,J (JOURNAL OF PHYSICAL CHEMISTRY C, 2009)