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Bis-Azide Low-Band Gap Cross-Linkable Molecule N₃-[CPDT(FBTTh₂)₂] to Fully Thermally Stabilize Organic Solar Cells Based on P3HT:PC₆₁BM.

ABSTRACT: We synthesized a novel bis-azide low-band gap cross-linkable molecule N₃-[CPDT(FBTTh₂)₂] with wide absorption. This compound is of interest as an additive in polymer/fullerene bulk heterojunction solar cells. In addition to providing efficient thermal stabilization of the morphology, the additive can harvest additional solar light compared with pristine poly(3-hexyl thiophene) to improve the power-conversion efficiency (PCE). The additional donor material was visualized from the appearance of additional external quantum efficiency contributions between 650 and 800 nm. An open-circuit voltage increase of ∼2% compensates the decrease in the short-circuit current of ∼2% to achieve a fully thermally stabilized PCE of 3.5% after 24 h of annealing at 150 °C.

SUBMITTER: Awada H

PROVIDER: S-EPMC6640987 | biostudies-literature |

REPOSITORIES: biostudies-literature

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