Exciton diffusion length in narrow bandgap polymers
نویسندگان
چکیده
منابع مشابه
Modelling exciton diffusion in disordered conjugated polymers
We present a combined quantum-chemical and Monte Carlo approach for calculating exciton transport properties in disordered organic materials starting from the molecular scale. We show that traps and energetic disorder are the main limitations for exciton diffusion in conjugated polymers. An analytical model for exciton hopping in a medium of sites with uncorellated energetic disorder gives a qu...
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The temperature dependence of the exciton dynamics in a conjugated polymer is studied using time-resolved spectroscopy. Photoluminescence decays were measured in heterostructured samples containing a sharp polymer-fullerene interface, which acts as an exciton quenching wall. Using a 1D diffusion model, the exciton diffusion length and diffusion coefficient were extracted in the temperature rang...
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ژورنال
عنوان ژورنال: Energy & Environmental Science
سال: 2012
ISSN: 1754-5692,1754-5706
DOI: 10.1039/c2ee03466b