PERFORMANCE AND LIGHT STABILITY STUDY ON ICBA AND PCBM FULLERENE ACCEPTORS RELATED TO THE CHOICE ON ELECTRON TRANSPORT MATERIAL
DOI:
https://doi.org/10.59627/cbens.2016.1460Palavras-chave:
PCBM, ICBA, Zinc OxideResumo
Indene-C60 bisadduct (ICBA) has been used as alternative acceptor to the [6,6]-phenyl-c61-butyric acid methyl ester (PCBM) inside the field of bulk heterojunction solar cells due to its ability to provide improved open circuit voltage as reported in the literature. The promise to produce higher efficient solar cells keeping poly(3-hexylthiophene) (P3HT) as donor which is a common and well know relatively stable donor has drawn broad attention of researchers in the area. However, when the acceptor is changed, not only the photoactive layer is affected but the whole system needs to be reviewed. In this work, we show a comparative study between ICBA and PCBM keeping P3HT (as donor), same concentration and solvent mixture. An analysis on performance and stability under light is brought with a focus also on the interlayer directly related to acceptor which is the electron transport material (ETL). We employed either zinc oxide (ZnO) or a polymer-based material as ETL for preparing the devices. We show that ZnO and ICBA show higher power conversion efficiency of 2.9%, however the most stable system is shown to be the combination of the organic ETL and PCBM with an extrapolated T-80 of 790 hours.
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Referências
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