Star-shaped magnesium tetraethynylporphyrin bearing four peripheral electron-accepting diketopyrrolopyrrole functionalities for organic solar cells

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Wang H, Yue Q, Nakagawa T, Zieleniewska A, Okada H, Ogumi K, Ueno H, Guldi DM, Zhu X, Matsuo Y
Zeitschrift: Journal of Materials Chemistry A
Jahr der Veröffentlichung: 2019
Band: 7
Heftnummer: 8
Seitenbereich: 4072-4083
ISSN: 2050-7488


Abstract

Magnesium tetraethynylporphyrins bearing four electron-deficient diketopyrrolopyrrole (DPP; Mg-TEP-DPP4) units were synthesized by Sonogashira coupling, and their optical and electrochemical properties were investigated. The energy levels were effectively tuned by DPP with or without electron-withdrawing end-caps. Importantly, all the Mg-TEP-DPP4 molecules have broad absorption bands across the visible and near-infrared regions. The time-dependent excited state features of Mg-TEP-DPP4 and their kinetics were investigated by femtosecond transient absorption spectroscopy in combination with multiwavelength and global/target analyses of time-resolved spectra. Importantly, the charge-separated state was demonstrated to undergo recombination within 253 ps in benzonitrile. Bulk heterojunction organic solar cells fabricated with Mg-TEP-DPP4:PC61BM exhibited a power conversion efficiency of 7.40% after solvent vapor annealing, which enabled balanced charge carrier transport, reduced charge recombination, and favorable charge separation and collection.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Guldi, Dirk Michael Prof. Dr.
Lehrstuhl für Physikalische Chemie I
Zieleniewska, Anna
Lehrstuhl für Physikalische Chemie I


Einrichtungen weiterer Autorinnen und Autoren

Chinese Academy of Sciences (CAS) / 中国科学院
Northeast Normal University / 东北师范大学
Tokyo Metropolitan Industrial Technology Research Institute
University of Science and Technology of China (USTC)
University of Tokyo


Zitierweisen

APA:
Wang, H., Yue, Q., Nakagawa, T., Zieleniewska, A., Okada, H., Ogumi, K.,... Matsuo, Y. (2019). Star-shaped magnesium tetraethynylporphyrin bearing four peripheral electron-accepting diketopyrrolopyrrole functionalities for organic solar cells. Journal of Materials Chemistry A, 7(8), 4072-4083. https://dx.doi.org/10.1039/c8ta10710f

MLA:
Wang, Huan, et al. "Star-shaped magnesium tetraethynylporphyrin bearing four peripheral electron-accepting diketopyrrolopyrrole functionalities for organic solar cells." Journal of Materials Chemistry A 7.8 (2019): 4072-4083.

BibTeX: 

Zuletzt aktualisiert 2019-20-03 um 11:41