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Palma AL, Cinà L, Busby Y, et al. Mesoscopic Perovskite Light-Emitting Diodes. ACS Appl Mater Interfaces. 2016;8(40):26989-26997doi: 10.1021/acsami.6b07750.
Palma, A. L., Cinà, L., Busby, Y., Marsella, A., Agresti, A., Pescetelli, S., Pireaux, J. J., & Di Carlo, A. (2016). Mesoscopic Perovskite Light-Emitting Diodes. ACS applied materials & interfaces, 8(40), 26989-26997. https://doi.org/10.1021/acsami.6b07750
Palma, Alessandro Lorenzo, et al. "Mesoscopic Perovskite Light-Emitting Diodes." ACS applied materials & interfaces vol. 8,40 (2016): 26989-26997. doi: https://doi.org/10.1021/acsami.6b07750
Palma AL, Cinà L, Busby Y, Marsella A, Agresti A, Pescetelli S, Pireaux JJ, Di Carlo A. Mesoscopic Perovskite Light-Emitting Diodes. ACS Appl Mater Interfaces. 2016 Oct 12;8(40):26989-26997. doi: 10.1021/acsami.6b07750. Epub 2016 Oct 03. PMID: 27667291.
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ACS Appl Mater Interfaces. 2016 Oct 12;8(40):26989-26997. doi: 10.1021/acsami.6b07750. Epub 2016 Oct 03.

Mesoscopic Perovskite Light-Emitting Diodes.

ACS applied materials & interfaces

Alessandro Lorenzo Palma, Lucio Cinà, Yan Busby, Andrea Marsella, Antonio Agresti, Sara Pescetelli, Jean-Jacques Pireaux, Aldo Di Carlo

Affiliations

  1. C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome Tor Vergata , Via del Politecnico 1, 00133 Rome, Italy.
  2. Department of Physics, Research Center in Physics of Matter and Radiation (PMR), LISE Laboratory, Université de Namur ASBL , Rue de Bruxelles 61, 5000 Namur, Belgium.

PMID: 27667291 DOI: 10.1021/acsami.6b07750

Abstract

Solution-processed hybrid bromide perovskite light-emitting-diodes (PLEDs) represent an attractive alternative technology that would allow overcoming the well-known severe efficiency drop in the green spectrum related to conventional LEDs technologies. In this work, we report on the development and characterization of PLEDs fabricated using, for the first time, a mesostructured layout. Stability of PLEDs is a critical issue; remarkably, mesostructured PLEDs devices tested in ambient conditions and without encapsulation showed a lifetime well-above what previously reported with a planar heterojunction layout. Moreover, mesostructured PLEDs measured under full operative conditions showed a remarkably narrow emission spectrum, even lower than what is typically obtained by nitride- or phosphide-based green LEDs. A dynamic analysis has shown fast rise and fall times, demonstrating the suitability of PLEDs for display applications. Combined electrical and advanced structural analyses (Raman, XPS depth profiling, and ToF-SIMS 3D analysis) have been performed to elucidate the degradation mechanism, the results of which are mainly related to the degradation of the hole-transporting material (HTM) and to the perovskite-HTM interface.

Keywords: Raman; ToF-SIMS; XPS; aging effects; characterization; light-emitting diode; mesoscopic; perovskite

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