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Published TCIMAIL newest issue No.201
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Additive for Improving Exciton Diffusion Length in OPVs: DICO
Product
Advantages
- In bulk-heterojunction (BHJ) type organic photovoltaics (OPVs) employing non-fullerene acceptors such as PM6:L8-BO, the use of DICO as an additive results in higher power conversion efficiencies (PCEs) compared to devices fabricated with the conventional 1,8-diiodooctane.
- Active layers fabricated with DICO exhibit high PCEs even in thick-film OPVs, due to its longer exciton diffusion lengths.
Reference
- 1,5-Diiodocycloctane: a cyclane solvent additive that can extend the exciton diffusion length in thick film organic solar cells
Related Products
The PCE of BHJ-type OPVs is significantly influenced by the morphology of the active layer. To control the morphology, various additives are employed during the active layer fabrication. 1,8-Diiodooctane and 1-chloronaphthalene are the most widely used as additives. Here, the following additives have been mainly studied in π-conjugated polymers/non-fullerene acceptors systems.
References (Review articles) Adv. Mater. 2018, 30, 1707114;
Adv. Mater. 2024, 36, 2406949.
![Dithieno[3,2-b:2',3’-d]thiophene](https://www.tcichemicals.com/assets/cms-images/additive_for_improving_exciton_diffusion_length_in_OPVs_DICO_11.png)
