Real-Time Tracking of Singlet Exciton Diffusion in Organic Semiconductors | Zendy

Oleg V. Kozlov | Zendy; Foppe de Haan | Zendy; Ross A. Kerner | Zendy; Barry P. Rand | Zendy; David Cheyns | Zendy; Maxim S. Pshenichnikov | Zendy

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Real-Time Tracking of Singlet Exciton Diffusion in Organic Semiconductors

Author(s) -

Oleg V. Kozlov,

Foppe de Haan,

Ross A. Kerner,

Barry P. Rand,

David Cheyns,

Maxim S. Pshenichnikov

Publication year - 2016

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.116.057402

Subject(s) - organic semiconductor , exciton , materials science , optoelectronics , diffusion , femtosecond , organic solar cell , oled , semiconductor , diode , spectroscopy , singlet state , tracking (education) , monte carlo method , laser , optics , atomic physics , physics , nanotechnology , condensed matter physics , polymer , layer (electronics) , quantum mechanics , excited state , psychology , pedagogy , statistics , mathematics , composite material , thermodynamics

Exciton diffusion in organic materials provides the operational basis for functioning of such devices as organic solar cells and light-emitting diodes. Here we track the exciton diffusion process in organic semiconductors in real time with a novel technique based on femtosecond photoinduced absorption spectroscopy. Using vacuum-deposited C-70 layers as a model system, we demonstrate an extremely high diffusion coefficient of D approximate to 3.5 x 10(-3) cm(2)/s that originates from a surprisingly low energetic disorder o

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