Improved performance of perovskite light-emitting diodes with a NaCl doped PEDOT: PSS hole transport layer
We demonstrate a simple and effective way to enhance the performance of perovskite light-emitting diodes (PeLEDs) by utilizing an alkali halide doped PEDOT:PSS as the hole transport layer (HTL). The alkali halide (NaCl) doping helped the growth of the quasi-2D perovskite phases on top of the PEDOT:P...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
09 Mar 2021
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| In: |
Journal of materials chemistry. C, Materials for optical and electronic devices
Year: 2021, Jahrgang: 9, Heft: 12, Pages: 4344-4350 |
| ISSN: | 2050-7534 |
| DOI: | 10.1039/D0TC06058E |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/D0TC06058E Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2021/tc/d0tc06058e 
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| Verfasserangaben: | Xiaokun Huang, Rainer Bäuerle, Felix Scherz, Jean-Nicolas Tisserant, Wolfgang Kowalsky, Robert Lovrinčić and Gerardo Hernandez-Sosa |
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| 520 | |a We demonstrate a simple and effective way to enhance the performance of perovskite light-emitting diodes (PeLEDs) by utilizing an alkali halide doped PEDOT:PSS as the hole transport layer (HTL). The alkali halide (NaCl) doping helped the growth of the quasi-2D perovskite phases on top of the PEDOT:PSS, it also significantly reduced the exciton quenching in PEDOT:PSS based PeLEDs. More importantly, the doping reduced the work function of the PEDOT:PSS surface, which appropriately modulated the hole injection leading to improved charge balance. This helps to control the recombination zone inside the thin perovskite emitting layer (∼10 nm). The optimized blue-green PeLEDs with the NaCl doped PEDOT:PSS HTL showed a maximum luminance of 1487 cd m−2, current efficiency of 2.16 cd A−1 with a low turn-on voltage of 3.0 V, which are 217% and 567% higher than the PeLEDs with the pristine PEDOT:PSS layer (turn-on voltage: 3.3 V), respectively. | ||
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| 700 | 1 | |a Tisserant, Jean-Nicolas |e VerfasserIn |4 aut | |
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