Charge Carrier Transport, Recombination, and Trapping in Organic Solar Cells Studied by Double Injection Technique

Autor:	Gytis Sliaužys, N. Nekrašas, Gytis Juška, Kristijonas Genevičius
Rok vydání:	2010
Předmět:	Materials science Organic solar cell business.industry Carrier lifetime Trapping Electron Molecular physics Atomic and Molecular Physics and Optics Polymer solar cell Organic semiconductor Optoelectronics Charge carrier Electrical and Electronic Engineering business Voltage
Zdroj:	IEEE Journal of Selected Topics in Quantum Electronics. 16:1764-1769
ISSN:	1558-4542 1077-260X
DOI:	10.1109/jstqe.2010.2041752
Popis:	In this paper, we demonstrate the possibilities of the double injection (DoI) current transient technique for the study of charge carriers' transport, recombination, and trapping in thin organic solar cells (OSC). Numerically calculated DoI current transients were compared with the experimentally obtained current transients in regioregular poly(3-hexylthiophene) (RR-P3HT) and its blends with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). From coefficient of reduced Langevin recombination dependence on the density of charge carriers in the annealed PCBM/RR-P3HT bulk heterojunction, 2-D Langevin recombination was experimentally confirmed. Trapping of the electrons was observed in the samples of TiO2/RR-P3HT and degraded blends of PCBM/RR-P3HT. The two injecting voltage pulses with delay between them have been used for determination of deep trapping states' influence on charge carrier's transport.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::09f061a9b7085dcd906f0ef202313588 https://doi.org/10.1109/jstqe.2010.2041752 Zobrazit plný text záznamu