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Oleksandr V. Mikhnenko, Martijn Kuik, Jason Lin, Niels van der Kaap, Thuc-Quyen Nguyen and Paul W. M. Blom Trap-Limited Exciton Diffusion in Organic Semiconductors Advanced Materials 26

Article first published online: 19 DEC 2013 | DOI: 10.1002/adma.201304162

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From time-resolved luminescence measurements it is demonstrated that the background concentration of excitonquenching defects in a range of organic semiconductors is the same as their electron-trap concentration. This observation suggests that the exciton-quenching defects and the electron traps share the same origin. The typical exciton diffusion length of 5–8 nm for organic semiconductors is therefore governed by the distance between the universal electron traps.

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