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Exciton Dissociation and Charge-Transport Enhancement in Organic Solar Cells with Quantum-Dot/N-doped CNT Hybrid Nanomaterials

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Title: Exciton Dissociation and Charge-Transport Enhancement in Organic Solar Cells with Quantum-Dot/N-doped CNT Hybrid Nanomaterials

Author(s): Ju Min Lee; Kwon, BH; Hyung Il Park; Kim, H; Kim, MG; Park, JS; Kim, ES; Yoo, S; Jeon, DY; Sang Ouk Kim

Subject: POWER CONVERSION EFFICIENCY, ; CARBON NANOTUBES, ; INP NANOCRYSTALS, ; POLYMER, ; NANOPARTICLES, ; NANOWIRES, ; POLYTHIOPHENE, ; ORGANIZATION, ; ELECTRON, ; DEVICES

Abstract: The incorporation of InP quantum-dot/N-doped multiwalled carbon nanotube (QD:NCNT) nanohybrids in the active layer of poly(3-hexylthiophene)/indene-C-60 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%.