Microwave-assisted synthesis of highly photoluminescent core/shell CuInZnSe/ZnS quantum dots as photovoltaic absorbers
Water-dispersible core/shell CuInZnSe/ZnS (CIZSe/ZnS) quantum dots (QDs) were efficiently synthesized under microwave irradiation using <i>N</i>-acetylcysteine (NAC) and sodium citrate as capping agents. The photoluminescence (PL) emission of CIZSe/ZnS QDs can be tuned from 593 to 733 nm with varying the Zn : Cu molar ratio in the CIZSe core. CIZSe/ZnS QDs prepared with a Zn : Cu ratio of 0.5 exhibit the highest PL quantum yield (54%) and the longest PL lifetime (515 ns) originating from the recombination of donor-acceptor pairs. The potential of CIZSe/ZnS QDs as photoabsorbers in QD-sensitized solar cells was also evaluated. An adequate type-II band alignment is observed between TiO<sub>2</sub> and CIZSe/ZnS QDs, indicating that photogenerated electrons in CIZSe/ZnS QDs could efficiently be injected into TiO<sub>2</sub>.
Authors
- H. Rinnert (ORCID: https://orcid.org/0000-0001-8777-1307)
- Stéphanie Bruyère (ORCID: https://orcid.org/0000-0001-7160-4520)
- Jordane Jasniewski (ORCID: https://orcid.org/0000-0002-8822-1742)
- Thomas Gries (ORCID: https://orcid.org/0000-0002-2480-8333)
- Lavinia Balan (ORCID: https://orcid.org/0000-0003-0144-401X)
- Ghouti Medjahdi (ORCID: https://orcid.org/0000-0002-3968-3473)
- Shubham Shishodia (ORCID: https://orcid.org/0000-0001-6139-8110)
- Raphaël Schneider (ORCID: https://orcid.org/0000-0002-6870-6902)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Laboratoire Réactions et Génie des Procédés (FR)
- Conditions Extrêmes et Matériaux Haute Température et Irradiation (FR)
- Institut Jean Lamour (FR)
- Laboratoire d'Ingénierie des Biomolécules
- Université de Lorraine (FR)
Publication Details
- Journal
- Nanoscale Advances
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d4na00893f
- Citations
- 6
- Primary Topic
- Quantum Dots Synthesis And Properties
- Type
- article
- Field-Weighted Citation Impact
- 3.11
Funders
- European Commission
- Agence Nationale de la Recherche
- Horizon 2020 Framework Programme