Tuning Charge-Separated State Lifetimes in Perovskite Nanocrystal-Perylenediimide Hybrids

Cortés-Villena A, Garcés-Garcés J, Cadranel A, García-Ros A, Sastre-Santos Á, Fernández-Lázaro F, Pérez-Prieto J, Guldi DM, Galian RE (2025)

Publication Language: English

Publication Type: Journal article

Publication year: 2025

Journal

Advanced Optical Materials Wiley

Book Volume: 13

Article Number: e01175

Journal Issue: 28

DOI: 10.1002/adom.202501175

Abstract

To surface engineer CsPbBr3 nanocrystals (NCs), the use of functional perylenediimides (PDIs) featuring carboxylic acids of different spacer lengths afforded hybrid materials such as NC@PDI-Ph (phenyl spacer) and NC@PDI-PhPr (phenylpropyl spacer). Properties that are not seen by the individual components, are investigated by an arsenal of steady-state and time-resolved techniques. These ranged from photoluminescence (PL) to ultrafast transient absorption spectroscopy (TAS) combined with global target analyses. Herein, charge separation from NCs to the electron-accepting PDIs upon photoexcitation of either the NC or PDI unities is evidenced. Remarkable is not only the lifetime of the charge carriers, which is on the time scale of microseconds, that is, 34 and 63 µs for NC@PDI-Ph and NC@PDI-PhPr, respectively, but also the control over their lifetimes through tuning phenyl- versus phenylpropyl-spacer length. These findings are of relevance to solar energy conversion, in general, and perovskite-based devices, in particular.

Authors with CRIS profile

Alejandro Cadranel Professur für Physikalische Chemie Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Additional Organisation(s)

FAU Profilzentrum Solar (FAU Solar) Molecular Materials (ICMM)

Involved external institutions

University of València / Universitat de València ES Spain (ES) Miguel Hernández University of Elche (UMH) / Universidad Miguel Hernández de Elche ES Spain (ES)

How to cite

APA:

Cortés-Villena, A., Garcés-Garcés, J., Cadranel, A., García-Ros, A., Sastre-Santos, Á., Fernández-Lázaro, F.,... Galian, R.E. (2025). Tuning Charge-Separated State Lifetimes in Perovskite Nanocrystal-Perylenediimide Hybrids. Advanced Optical Materials, 13(28). https://doi.org/10.1002/adom.202501175

MLA:

Cortés-Villena, Alejandro, et al. "Tuning Charge-Separated State Lifetimes in Perovskite Nanocrystal-Perylenediimide Hybrids." Advanced Optical Materials 13.28 (2025).

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