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Influence of chain packing on the excitation transfer in perylene-end-capped polyindenofluorene

Conference on Lasers and Electro-Optics Europe - Technical Digest (2001) 62

Authors:

LM Herz, C Silva, RH Friend, RT Phillips, S Setayesh, K Müllen
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Effects of aggregation on the excitation transfer in perylene-end-capped polyindenofluorene studied by time-resolved photoluminescence spectroscopy -: art. no. 195203

PHYSICAL REVIEW B 64:19 (2001) ARTN 195203

Authors:

LM Herz, C Silva, RH Friend, RT Phillips, S Setayesh, S Becker, D Marsitsky, K Müllen
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Exciton migration to chain aggregates in conjugated polymers:: influence of side-chain substitution

CHEMICAL PHYSICS LETTERS 347:4-6 (2001) 318-324

Authors:

LM Herz, C Silva, RT Phillips, S Setayesh, K Müllen
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Effects of interchain interactions, polarization anisotropy, and photo-oxidation on the ultrafast photoluminescence decay from a polyfluorene

PHYSICAL REVIEW B 61:20 (2000) 13691-13697

Authors:

LM Herz, RT Phillips
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Observation of state filling effects in the carrier dynamics of self-assembled quantum dots

Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD (1999) 344-347

Authors:

LM Herz, LV Dao, MB Johnston, M Gal, C Jagadish

Abstract:

The time-resolved photoluminescence technique of picosecond excitation correlation has been applied to self-assembled InGaAs quantum dots grown in the Stranski-Krastanow mode. The nonlinear cross-correlation signal is shown to be due to filling of the quantum dot ground state causing an increase in recombination from the first excited state with increasing carrier density. Carrier relaxation times and radiative as well as non-radiative recombination times for the ground and the first excited state of the quantum dot system are determined using a model based on state filling effect.