Author, as appears in the article.: Moustafa, Enas; Torimtubun, Alfonsina Abat Amelenan; Pallares, Josep; Marsal, Lluis F.;

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: Marsal Garví, Luis Francisco / Pallarès Marzal, Josep / Torimtubun, Alfonsina Abat Amelenan

Keywords: Thermal annealing Ternary heterojunctions Stability Solvent additives Polymer solar-cells Photovoltaic performance Photovoltaic effects Organic photovoltaics Optical and electronic properties Open-circuit voltage Nonfullerenes Non-fullerene acceptors Morphological control Layer Impedance spectroscopy Heterojunctions External quantum efficiency Enhancement Electronic properties Efficiency Conjugated polymers Bulk heterojunction Blend Binary heterojunctions Alloy Additives 1-chloronaphthalene

Abstract: Fine tuning of blend morphology is a key factor that limits the performance of the bulk-heterojunction organic photovoltaics (BHJ-OPVs). Herein, the morphological control of the binary (PM6:Y7) and ternary (PM6:Y7:PC70BM) blends is conducted through 1-chloronaphthalene (CN) solvent additive and thermal annealing (TA) treatment with respect to their influence on the photovoltaic performance. Moreover, a distinct study is accomplished on the optical and electronic properties of the treated and nontreated binary and ternary devices by external quantum efficiency measurements and impedance spectroscopy. The results indicate that these treatments affect the performance of the binary and ternary OPVs differently. Regarding the 2% CN addition, the current density of the binary devices is improved by approximate to 27%, whereas the fill factor of the ternary devices shows a pronounced increment of approximate to 22%. A contradictory behavior is exhibited by TA for the binary and ternary OPVs. The PCEs for binary devices (with/without CN) and 2% CN-treated ternary ones are improved, while diminishing the PCEs of the ternary ones with 0% CN. Accordingly, the highest efficiencies of the binary and ternary OPVs are obtained due to the dual effect of 2% CN solvent additive along with the TA treatments.

Thematic Areas: Materials science, multidisciplinary Energy engineering and power technology Energy & fuels Electronic, optical and magnetic materials Electrical and electronic engineering Atomic and molecular physics, and optics

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: lluis.marsal@urv.cat josep.pallares@urv.cat alfonsina.abat@estudiants.urv.cat alfonsina.abat@estudiants.urv.cat

Author identifier: 0000-0002-5976-1408 0000-0001-7221-5383 0000-0001-8012-4772 0000-0001-8012-4772

Record's date: 2023-03-11

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://onlinelibrary.wiley.com/doi/10.1002/solr.202100480

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Solar Rrl. 6 (5):

APA: Moustafa, Enas; Torimtubun, Alfonsina Abat Amelenan; Pallares, Josep; Marsal, Lluis F.; (2022). Effect of Additives and Annealing on the Performance of Nonfullerene-Based Binary and Ternary Organic Photovoltaics. Solar Rrl, 6(5), -. DOI: 10.1002/solr.202100480

Article's DOI: 10.1002/solr.202100480

Entity: Universitat Rovira i Virgili

Journal publication year: 2022

Publication Type: Journal Publications