Open AccessBis-Azide Low-Band Gap Cross-Linkable Molecule N3-[CPDT(FBTTh2)2] to Fully Thermally Stabilize Organic Solar Cells Based on P3HT:PC61BM
Author(s) -
Hussein Awada,
Thérèse Gorisse,
Romain Peresutti,
Thomas Tjoutis,
Joël J. E. Moreau,
Guillaume Wantz,
Olivier Dautel
Publication year - 2017
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.6b00476
Subject(s) - materials science , organic solar cell , energy conversion efficiency , open circuit voltage , band gap , optoelectronics , quantum efficiency , polymer solar cell , annealing (glass) , solar cell , absorption (acoustics) , azide , photochemistry , polymer , voltage , chemistry , organic chemistry , physics , quantum mechanics , composite material
We synthesized a novel bis-azide low-band gap cross-linkable molecule N 3 -[CPDT(FBTTh 2 ) 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.