Title :
Direct observation of ultrafast field induced charge photogeneration in conducting polymers
Author :
Cerullo, Giulio ; Nisoli, Mauro ; Stagira, S. ; De Silvestri, S. ; Lanzani, Guglielmo ; Graupner, W. ; List, E.J.W. ; Leising, G.
Author_Institution :
Dipt. di Fisica, Politecnico Ist. Nazional Fisica dell Mater., Milano, Italy
Abstract :
Summary form only given.We investigate field-induced charge generation by applying the femtosecond pump-probe technique to LEDs made with methyl-substituted ladder-type poly(para-phenylene) (m-LPPP). These LEDs consist of thin films of m-LPPP (about 100 nm thick) are sandwiched between aluminium and transparent ITO electrodes. Pump and probe pulses, of about 150 fs duration, reached the m-LPPP film.
Keywords :
conducting polymers; electrodes; high-speed optical techniques; light emitting diodes; optical films; optical polymers; optical pumping; LEDs; conducting polymers; femtosecond pump-probe technique; field-induced charge generation; fs duration; m-LPPP film; methyl-substituted ladder-type poly(para-phenylene); probe pulses; pump pulses; transparent ITO electrodes; ultrafast field induced charge photogeneration; Absorption; Delay; Excitons; Light emitting diodes; Optical films; Optical harmonic generation; Optical pumping; Polymers; Probes; Ultrafast optics;
Conference_Titel :
Quantum Electronics Conference, 1998. IQEC 98. Technical Digest. Summaries of papers presented at the International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-541-2
DOI :
10.1109/IQEC.1998.680291
