Advanced Materials (FRG) 2013-04-11

Exciton dissociation and charge-transport enhancement in organic solar cells with quantum-dot/N-doped CNT hybrid nanomaterials.

Ju Min Lee, Byoung-Hwa Kwon, Hyung Il Park, Hoyeon Kim, Min Gyu Kim, Ji Sun Park, E Su Kim, Seunghyup Yoo, Duk Young Jeon, Sang Ouk Kim

Index: Adv. Mater. 25(14) , 2011-7, (2013)

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Abstract

The incorporation of InP quantum-dot/N-doped multiwalled carbon nanotube (QD:NCNT) nanohybrids in the active layer of poly(3-hexylthiophene)/indene-C60 bisadduct (P3HT/ICBA) bulk-heterojuction solar cells enhances V(OC) and J(SC) . The QDs encourage exciton dissociation by promoting electron transfer, while the NCNTs enhance the transport of the separated electrons and eventual charge collection. Such a synergistic effect successfully improves the power conversion efficiency (PCE) from 4.68% (reference cells) to 6.11%.Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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