Reducing Nonradiative Recombination Losses in Tin-Based Perovskite LEDs Utilizing a Self-Assembled Monolayer
Tin-based perovskites are emerging as less-toxic alternatives to their lead-based counterparts for optoelectronic devices, such as solar cells and light-emitting diodes (LEDs). However, despite their great potential, the efficiency of pure red tin-based perovskite LEDs (Sn-LEDs) still lags behind that of lead-based perovskite LEDs (Pb-LEDs), partly due to the poor electron blocking at the PEDOT:PSS/perovskite interface. This leads to detrimental nonradiative recombination pathways that limit the performance of the LEDs. In this study, we replaced the conventional PEDOT:PSS layer with the self-assembled monolayer (SAM) EADR03, presenting, to the best of our knowledge, the first report of a SAM employed as a hole-selective layer in Sn-LEDs. EADR03 simultaneously acted as an efficient electron-blocking and hole-injecting layer, thereby reducing interfacial recombination losses and enhancing the LEDs' performance. As a result, we achieved a 3-fold enhancement in external quantum efficiency, propelling the advancement of more efficient tin-based perovskite LEDs.
Authors
- Jhonatan Rodríguez‐Pereira (ORCID: https://orcid.org/0000-0001-6501-9536)
- Jesús Sánchez‐Díaz (ORCID: https://orcid.org/0000-0002-3458-8135)
- Antonio Abate (ORCID: https://orcid.org/0000-0002-3012-3541)
- Iván Mora‐Seró (ORCID: https://orcid.org/0000-0003-2508-0994)
- Juan Luis Delgado (ORCID: https://orcid.org/0000-0002-6948-8062)
- Ece Aktas
- Sergio Galve‐Lahoz (ORCID: https://orcid.org/0009-0006-3569-3072)
Institutions
- Universitat Jaume I (ES)
- Ikerbasque (ES)
- Central European Institute of Technology (CZ)
- University of Pardubice (CZ)
- University of the Basque Country (ES)
- Polymat (ES)
- Brno University of Technology (CZ)
- University of Naples Federico II (IT)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2025-10-22
- DOI
- https://doi.org/10.1021/acsami.5c15797
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Università degli Studi di Napoli Federico II
- University of Oxford
- European Commission
- Euskal Herriko Unibertsitatea
- Ikerbasque, Basque Foundation for Science
- Vysoké Učení Technické v Brně
- Ministerio de Ciencia e Innovación
- Central European Institute of Technology
- Univerzita Pardubice
- HORIZON EUROPE Framework Programme
- Agencia Estatal de Investigación
- HORIZON EUROPE European Innovation Council