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

Advanced materials (Deerfield Beach, Fla.) (2013-01-15)
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
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%.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Dodecylamine, 98%
Sigma-Aldrich
Dodecylamine, ≥99%
Sigma-Aldrich
Dodecylamine, puriss., ≥99.5% (GC)
Sigma-Aldrich
Fullerene-C60, sublimed, 99.9%
Sigma-Aldrich
Indene, ≥99%
Sigma-Aldrich
Fullerene-C60, 99.5%
Sigma-Aldrich
Indene, 98%
Sigma-Aldrich
Indene, contains 50-100 ppm tert-butylcatechol as stabilizer, technical grade, ≥90%
Sigma-Aldrich
Fullerene-C60, 98%