Details

Autor(en) / Beteiligte

• Ko, Eun Yi
• Park, Gi Eun
• Lee, Ji Hyung
• Kim, Hyung Jong
• Lee, Dae Hee
• Ahn, Hyungju
• Uddin, Mohammad Afsar
• Woo, Han Young
• Cho, Min Ju
• Choi, Dong Hoon

Titel

Excellent Long-Term Stability of Power Conversion Efficiency in Non-Fullerene-Based Polymer Solar Cells Bearing Tricyanovinylene-Functionalized n‑Type Small Molecules

Ist Teil von

• ACS applied materials & interfaces, 2017-03, Vol.9 (10), p.8838-8847

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• New small molecules having modified acceptor strength and π-conjugation length and containing dicyanovinylene (DCV) and tricyanovinylene (TCV) as a strongly electron-accepting unit with indacenodithiophene, IDT­(DCV)2, IDT­(TCV)2, and IDTT­(TCV)2, were synthesized and studied in terms of their applicability to polymer solar cells with PTB7-Th as an electron-donating polymer. Intriguingly, the blended films containing IDT­(TCV)2 and IDTT­(TCV)2 exhibited superior shelf life stabilities of more than 1000 h without any reduction in the initial power conversion efficiency. The low-lying lowest unoccupied molecular orbital energy levels and robust internal morphologies of small TCV-containing molecules could afford excellent shelf life stability.