Singlet Fission for Photovoltaics with 130 % Injection Efficiency

Journal article
(Original article)


Publication Details

Author(s): Kunzmann A, Gruber M, Casillas Pacheco R, Zirzlmeier J, Stanzel M, Peukert W, Tykwinski R, Guldi DM
Journal: Angewandte Chemie International Edition
Publisher: Wiley-VCH Verlag
Publication year: 2018
Volume: 57
Journal issue: 33
Pages range: 10742-10747
ISSN: 1433-7851
eISSN: 1521-3773


Abstract

A novel pentacene dimer (P2) and a structurally analogous monomer (P1) were synthesized for use in n-type dye-sensitized solar cells. In P2, the triplet excited states formed by the rapid, spin-allowed process singlet fission were expected to enable carrier multiplication in comparison to the slow, spin-forbidden intersystem crossing seen in P1. A meta-positioning of the two pentacenes and the carboxylate anchor were chosen in P2 to balance the intramolecular dynamics of singlet fission and electron injection. Electron injection from energetically low-lying triplet excited states of pentacene units necessitated the intrinsic and extrinsic lowering of the Fermi level of the semiconductor. Indium-zinc oxide in the presence of Li+ was found to be the optimum choice for the photoelectrodes. Efficient electron injection from the triplet excited states of P1 and P2 was found, with a carrier multiplication of nearly 130 %.


FAU Authors / FAU Editors

Casillas Pacheco, Ruben Dr.
Lehrstuhl für Physikalische Chemie I
Gruber, Marco
Lehrstuhl für Organische Chemie I
Guldi, Dirk Michael Prof. Dr.
Lehrstuhl für Physikalische Chemie I
Kunzmann, Andreas
Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Physikalische Chemie I
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Stanzel, Melanie
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Tykwinski, Rik Prof.
Lehrstuhl für Organische Chemie I
Zirzlmeier, Johannes
Lehrstuhl für Physikalische Chemie I


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials
A1 Functional Particle Systems
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Kunzmann, A., Gruber, M., Casillas Pacheco, R., Zirzlmeier, J., Stanzel, M., Peukert, W.,... Guldi, D.M. (2018). Singlet Fission for Photovoltaics with 130 % Injection Efficiency. Angewandte Chemie International Edition, 57(33), 10742-10747. https://dx.doi.org/10.1002/anie.201801041

MLA:
Kunzmann, Andreas, et al. "Singlet Fission for Photovoltaics with 130 % Injection Efficiency." Angewandte Chemie International Edition 57.33 (2018): 10742-10747.

BibTeX: 

Last updated on 2019-14-03 at 11:53