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

Lee, Ju Min; Kwon, Byoung-Hwa; Park, Hyung Il; Kim, Hoyeon; Kim, Min Gyu; Park, Ji Sun; Kim, E Su; Yoo, Seunghyup et al. · Adv Mater · 2013

basic_science · Level V

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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%.

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