Charge-transfer excitons in strongly coupled organic semiconductors

Autor:	Glowe, Jean-Francois, Perrin, Mathieu, Beljonne, David, Hayes, Sophia C., Gardebien, Fabrice, Silva, Carlos
Rok vydání:	2009
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 2010 vol. 81 (4) pp. 041201
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.81.041201
Popis:	Time-resolved and temperature-dependent photoluminescence measurements on one-dimensional sexithiophene lattices reveal intrinsic branching of photoexcitations to two distinct species: self-trapped excitons and dark charge-transfer excitons (CTX; > 5% yield), with radii spanning 2-3 sites. The significant CTX yield results from the strong charge-transfer character of the Frenkel exciton band due to the large free exciton bandwidth (~400 meV) in these supramolecular nanostructures. Comment: Physical Review B Rapid Communications (In Press)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0910.2515 Zobrazit plný text záznamu View this record from Arxiv