- Titel
- Mobile Trions in Electrically Tunable 2D Hybrid Perovskites
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-939117
- Quellenangabe
- Advanced materials
Erscheinungsjahr: 2023
Jahrgang: 35
Heft: 18
E-ISSN: 1521-4095
Artikelnummer: 2210221 - Erstveröffentlichung
- 2023
- Abstract (EN)
- 2D hybrid perovskites are currently in the spotlight of material research for light-harvesting and -emitting applications. It remains extremely challenging, however, to externally control their optical response due to the difficulties of introducing electrical doping. Here, an approach of interfacing ultrathin sheets of perovskites with few-layer graphene and hexagonal boron nitride into gate-tunable, hybrid heterostructures, is demonstrated. It allows for bipolar, continuous tuning of light emission and absorption in 2D perovskites by electrically injecting carriers to densities as high as 1012 cm−2. This reveals the emergence of both negatively and positively charged excitons, or trions, with binding energies up to 46 meV, among the highest measured for 2D systems. Trions are shown to dominate light emission and propagate with mobilities reaching 200 cm2 V−1 s−1 at elevated temperatures. The findings introduce the physics of interacting mixtures of optical and electrical excitations to the broad family of 2D inorganic–organic nanostructures. The presented strategy to electrically control the optical response of 2D perovskites highlights it as a promising material platform toward electrically modulated light-emitters, externally guided charged exciton currents, and exciton transistors based on layered, hybrid semiconductors.
- Andere Ausgabe
- Link zum Artikel der zuerst in der Zeitschrift „Advanced materials” bei Wiley-VCH erschienen ist.
DOI: 10.1002/adma.202210221 - Verweis
- Ergänzendes Material ist unter folgendem Link zu finden.
Link: https://onlinelibrary.wiley.com/doi/10.1002/adma.202210221#support-information-section - Freie Schlagwörter (EN)
- Mobile Trions, 2D Hybrid Perovskites, light-harvesting and -emitting applications
- Klassifikation (DDC)
- 540
- 660
- Verlag
- Wiley-VCH, Weinheim
- Förder- / Projektangaben
- Deutsche Forschungsgemeinschaft (DFG)
SPP 2196: Perowskit-Halbleiter: Von fundamentalen Eigenschaften zur Anwendung
Vielteilchenwechselwirkungen in zwei-dimensionalen Halogenid-Perowskiten: Exziton-Elektron Zustände und Elektron-Phonon Kopplung
ID: 424709454 - Deutsche Forschungsgemeinschaft (DFG)
Emmy Noether-Nachwuchsgruppen
Untersuchung und Kontrolle elektronischer Vielteilchenzustände in zwei-dimensionalen Materialien
ID: 287022282 - Deutsche Forschungsgemeinschaft (DFG)
Exzellenzcluster (ExStra)
EXC 2147: Komplexität und Topologie in Quantenmaterialien
((CT.QMAT))
ID: 390858490 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-939117
- Veröffentlichungsdatum Qucosa
- 27.11.2024
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
CC BY-NC-ND 4.0