Tuning Charge‐Separated State Lifetimes in Perovskite Nanocrystal‐Perylenediimide Hybrids
Abstract To surface engineer CsPbBr 3 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
- Jose Garcés‐Garcés (ORCID: https://orcid.org/0000-0002-7637-3140)
- Dirk M. Guldi (ORCID: https://orcid.org/0000-0002-3960-1765)
- Fernando Fernández‐Lázaro (ORCID: https://orcid.org/0000-0002-4598-6024)
- Raquel E. Galian (ORCID: https://orcid.org/0000-0001-8703-4403)
- Ángela Sastre‐Santos (ORCID: https://orcid.org/0000-0002-8835-2486)
- Alejandro Cadranel (ORCID: https://orcid.org/0000-0002-6597-4397)
- Alejandro Cortés‐Villena (ORCID: https://orcid.org/0000-0001-6600-9209)
- Julia Pérez‐Prieto (ORCID: https://orcid.org/0000-0002-5833-341X)
- Alberto García‐Ros
Institutions
- Universitat de Miguel Hernández d'Elx (ES)
- Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
- Universidad de Buenos Aires (AR)
- International Council on Mining and Metals (GB)
- Parc Científic de la Universitat de València (ES)
- Instituto de Química y Fisicoquímica Biológicas (AR)
- Fundación Ciencias Exactas y Naturales (AR)
Publication Details
- Journal
- Advanced Optical Materials
- Published
- 2025-08-05
- DOI
- https://doi.org/10.1002/adom.202501175
- Citations
- 1
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Solar Technologies go Hybrid
- European Commission
- Deutsche Forschungsgemeinschaft
- Consejo Nacional de Investigaciones Científicas y Técnicas
- Generalitat Valenciana
- European Regional Development Fund
- Agencia Estatal de Investigación