| Title: |
Interfacial Chemistry Limits the Stability of Deep Blue Perovskite LEDs Revealed by Operando Characterization |
| Authors: |
Mirabelli, Alessandro James; Kammlander, Birgit; Lu, Yang; Varma, Rahul Mahavir; Gu, Qichun; Radetzky, Karen; Selby, Thomas A; Liu, Tianjun; Riva, Stefania; Wei, Zimu; Lee, Tien-Lin; Rawle, Jonathan; Rensmo, Håkan; Anaya, Miguel; Cappel, Ute B; Stranks, Samuel D |
| Contributors: |
Swedish Research Council; Göran Gustafsson Foundation; Knut and Alice Wallenberg Foundation; Swedish Energy Agency; European Research Council; European Commission; Royal Academy of Engineering; Ministerio de Ciencia, Innovación y Universidades (España); Agencia Estatal de Investigación (España); Engineering and Physical Sciences Research Council (UK); Tata Group; Diamond Light Source (UK); Mirabelli, Alessandro James; Kammlander, Birgit; Lu, Yang; Varma, Rahul Mahavir; Gu, Qichun; Radetzky, Karen; Selby, Thomas A; Liu, Tianjun; Riva, Stefania; Wei, Zimu; #NODATA#; Rawle, Jonathan; Rensmo, Håkan; Anaya, Miguel; Cappel, Ute B; Stranks, Samuel D; Consejo Superior de Investigaciones Científicas https://ror.org/02gfc7t72 |
| Publisher Information: |
American Chemical Society |
| Publication Year: |
2025 |
| Collection: |
Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council) |
| Subject Terms: |
Anions; Binding Energy; Degradation; Layers; Perovskites; http://metadata.un.org/sdg/7; Ensure access to affordable; reliable; sustainable and modern energy for all |
| Description: |
To commercialize lead halide perovskites as light-emitting diodes (LEDs), the operational device lifetime needs to be drastically improved. For this to be achieved, an understanding of degradation behavior under bias is crucial. Herein, we perform operando measurements of the structural, chemical, and electronic changes using synchrotron-based grazing-incidence wide-angle X-ray scattering and hard X-ray photoelectron spectroscopy on full-stack deep blue mixed bromide/chloride lead halide perovskite LEDs. While a clear drop in optoelectronic performance is recorded under electrical bias, the accompanying X-ray scattering data reveals only minor changes in structural properties. However, photoelectron spectroscopy reveals substantial chemical changes at the electron-injecting interface after bias is applied, including the formation of unwanted metallic lead and a new chlorine species that is not in the perovskite structure. These operando approaches give important structural and interfacial perspectives to reveal the degradation mechanisms in these LEDs and highlight the need to address the top electron-injecting interface to realize step-changes in operational stability. ; A.J.M. acknowledges funding from the D.M.P. VFdS74 foundation. We thank the Swedish Research Council (Grant Nos. VR 2018-06465, VR 2023-05072, and VR 2022-03168) and the Göran Gustafsson foundation for funding. This work was partially supported by the Wallenberg Initiative Materials Science for Sustainability (WISE), funded by the Knut and Alice Wallenberg Foundation. We further thank the Swedish Energy Agency (P50626-1). The authors acknowledge the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (HYPERION, grant agreement No. 756962). M.A. acknowledges support from the Royal Academy of Engineering under the Research Fellowship programme, and from MICIU/AEI/10.13039/501100011033 and the European Union NextGenerationEU/PRTR through grants RYC2021-034941-I and PID2022-142525OA-I00. The ... |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISBN: |
978-1-05-009489-8; 1-05-009489-1 |
| Relation: |
#PLACEHOLDER_PARENT_METADATA_VALUE#; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-142525OA-I00/ES/PEROVSKITAS DE HALURO LIBRES DE LIGANDO EN GAN POROSO PARA APLICACIONES DE EMISION DE LUZ DE NUEVA GENERACION/; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/RYC2021-034941-I/ES/Halide perovskites for energy devices; info:eu-repo/grantAgreement/EC/H2020/756962; https://doi.org/10.1021/acsenergylett.5c00989; Sí; https://hdl.handle.net/10261/398627; http://dx.doi.org/10.13039/501100000287; http://dx.doi.org/10.13039/501100011033; http://dx.doi.org/10.13039/100011889; http://dx.doi.org/10.13039/501100000266; http://dx.doi.org/10.13039/501100000780; http://dx.doi.org/10.13039/501100000781; http://dx.doi.org/10.13039/501100003426; http://dx.doi.org/10.13039/501100004063; https://api.elsevier.com/content/abstract/scopus_id/105009489125 |
| DOI: |
10.1021/acsenergylett.5c00989 |
| DOI: |
10.13039/501100000287 |
| DOI: |
10.13039/501100011033 |
| DOI: |
10.13039/100011889 |
| DOI: |
10.13039/501100000266 |
| DOI: |
10.13039/501100000780 |
| DOI: |
10.13039/501100000781 |
| DOI: |
10.13039/501100003426 |
| DOI: |
10.13039/501100004063 |
| Availability: |
https://hdl.handle.net/10261/398627; https://doi.org/10.1021/acsenergylett.5c00989; https://doi.org/10.13039/501100000287; https://doi.org/10.13039/501100011033; https://doi.org/10.13039/100011889; https://doi.org/10.13039/501100000266; https://doi.org/10.13039/501100000780; https://doi.org/10.13039/501100000781; https://doi.org/10.13039/501100003426; https://doi.org/10.13039/501100004063; https://api.elsevier.com/content/abstract/scopus_id/105009489125 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.35970F7D |
| Database: |
BASE |