Singlet Fission for Photovoltaics with 130 % Injection Efficiency

Kunzmann A, Gruber M, Casillas Pacheco R, Zirzlmeier J, Stanzel M, Peukert W, Tykwinski R, Guldi DM (2018)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2018

Journal

Publisher: Wiley-VCH Verlag

Book Volume: 57

Pages Range: 10742-10747

Journal Issue: 33

DOI: 10.1002/anie.201801041

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 %.

Authors with CRIS profile

Additional Organisation(s)

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: Download