Highly Efficient and Photostable Ternary Organic Solar Cells Enabled by the Combination of Non-Fullerene and Fullerene Acceptors with Thienopyrrolodione-based Polymer Donors
| Autor: | Jong-Woon Ha, Du Hyeon Ryu, Do-Hoon Hwang, Hee Su Kim, Chang Eun Song, Won Suk Shin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Fullerene Ternary numeral system Organic solar cell 020209 energy Photovoltaic system Energy conversion efficiency 02 engineering and technology 021001 nanoscience & nanotechnology Crystallinity chemistry.chemical_compound chemistry Chemical engineering 0202 electrical engineering electronic engineering information engineering Thiophene General Materials Science 0210 nano-technology Ternary operation |
| Zdroj: | ACS Applied Materials & Interfaces. 12:51699-51708 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.0c14367 |
| Popis: | Two polymer donors, PFBDT-8ttTPD and PClBDT-8ttTPD, consisting of halogenated thiophene-substituted benzo[1,2-b:4,5-b']dithiophene and alkyl-substituted thieno[3,2-b]thiophene linked thieno[3,4-c]pyrrole-4,6(5H)-dione, were designed and synthesized for the evaluation of photovoltaic performances. The fabricated IT-4F-based organic solar cells (OSCs) exhibited maximum power conversion efficiency (PCE) values of 12.81 and 11.12% for PFBDT-8ttTPD and PClBDT-8ttTPD, respectively. Furthermore, PFBDT-8ttTPD:Y6 showed significantly improved PCE (15.05%) due to the extended light harvesting in the broad solar spectrum, whereas the PClBDT-8ttTPD:Y6 displayed relatively low PCE (10.02%). A ternary system incorporating PC71BM as the third component into bulk-heterojuction composites (PFBDT-8ttPTD:non-fullerene) was investigated with the aim of utilizing the advantages of PC71BM. As a result, PFBDT-8ttTPD:IT-4F:PC71BM exhibited an improved PCE (13.67%) compared to that of the corresponding binary OSC. In particular, ternary OSC of PFBDT-8ttTPD:Y6:PC71BM showed outstanding photovoltaic performance (PCE = 16.43%) as well as photostability, retaining approximately 80% of the initial PCE after 500 h under continuous illumination. The introduction of a small amount of PC71BM resulted in favorable and dense molecular packing with improved crystallinity as well as enhanced charge carrier mobility for efficient OSC. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|