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Updated: Jan 20, 2026

Developing High Performance GaP/Si Heterojunction Solar Cells
Published on: November 16, 2018
Bis-Azide Low-Band Gap Cross-Linkable Molecule N3-[CPDT(FBTTh2)2] to Fully Thermally Stabilize Organic Solar Cells
Hussein Awada1, Thérèse Gorisse2, Romain Peresutti1
1Institut Charles Gerhardt de Montpellier, Laboratoire AM2N, UMR CNRS 5253, ENSCM 8 rue de l'Ecole Normale, 34296 Montpellier, France.
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.
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