Mesoscopic Perovskite Light-Emitting Diodes

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

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)26989-26997
Number of pages9
JournalACS Applied Materials & Interfaces
Volume8
Issue number40
DOIs
Publication statusPublished - 12 Oct 2016

Fingerprint

Perovskite
Light emitting diodes
Degradation
Depth profiling
perovskite
Secondary ion mass spectrometry
Bromides
Encapsulation
Nitrides
Dynamic analysis
Heterojunctions
X ray photoelectron spectroscopy
Display devices

Keywords

  • aging effects
  • characterization
  • light-emitting diode
  • mesoscopic
  • perovskite
  • Raman
  • ToF-SIMS
  • XPS

Cite this

Palma, A. L., Cinà, L., Busby, Y., Marsella, A., Agresti, A., Pescetelli, S., ... 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 ; Cinà, Lucio ; Busby, Yan ; Marsella, Andrea ; Agresti, Antonio ; Pescetelli, Sara ; Pireaux, Jean-Jacques ; Di Carlo, Aldo. / Mesoscopic Perovskite Light-Emitting Diodes. In: ACS Applied Materials & Interfaces. 2016 ; Vol. 8, No. 40. pp. 26989-26997.
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Palma, AL, 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, vol. 8, no. 40, pp. 26989-26997. https://doi.org/10.1021/acsami.6b07750

Mesoscopic Perovskite Light-Emitting Diodes. / Palma, Alessandro Lorenzo; Cinà, Lucio; Busby, Yan; Marsella, Andrea; Agresti, Antonio; Pescetelli, Sara; Pireaux, Jean-Jacques; Di Carlo, Aldo.

In: ACS Applied Materials & Interfaces, Vol. 8, No. 40, 12.10.2016, p. 26989-26997.

Research output: Contribution to journalArticle

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Palma AL, Cinà L, Busby Y, Marsella A, Agresti A, Pescetelli S et al. Mesoscopic Perovskite Light-Emitting Diodes. ACS Applied Materials & Interfaces. 2016 Oct 12;8(40):26989-26997. https://doi.org/10.1021/acsami.6b07750