Colloidal semiconductor nanocrystals (NCs) and, recently, nanoplatelets (NPLs), owing to their efficient and narrow-band luminescence, are considered as frontier materials for light-emitting diode (LED) technology. NC-LEDs typically incorporate interfacial layers as charge regulators to ensure charge balancing and high performance. In this Letter, we show the prolongation of the lifetime of multilayer solution-processed NC-LEDs by combining a self-doped conductive conjugated polyelectrolyte and exfoliated molybdenum disulfide (MoS2) flakes as an alternative to PEDOT:PSS. The ink features a neutral pH and a tunable hydrophobicity that mainly results in a remarkable stability of LEDs, using CdSe/CdZnS NPLs.

Lagonegro, P., Martella, C., Squeo, B., Carulli, F., Scavia, G., Lamperti, A., et al. (2020). Prolonged Lifetime in Nanocrystal Light-Emitting Diodes Incorporating MoS2-Based Conjugated Polyelectrolyte Interfacial Layer as an Alternative to PEDOT:PSS. ACS APPLIED ELECTRONIC MATERIALS, 2(5), 1186-1192 [10.1021/acsaelm.0c00097].

Prolonged Lifetime in Nanocrystal Light-Emitting Diodes Incorporating MoS2-Based Conjugated Polyelectrolyte Interfacial Layer as an Alternative to PEDOT:PSS

Carulli, F;Brovelli, S
;
2020

Abstract

Colloidal semiconductor nanocrystals (NCs) and, recently, nanoplatelets (NPLs), owing to their efficient and narrow-band luminescence, are considered as frontier materials for light-emitting diode (LED) technology. NC-LEDs typically incorporate interfacial layers as charge regulators to ensure charge balancing and high performance. In this Letter, we show the prolongation of the lifetime of multilayer solution-processed NC-LEDs by combining a self-doped conductive conjugated polyelectrolyte and exfoliated molybdenum disulfide (MoS2) flakes as an alternative to PEDOT:PSS. The ink features a neutral pH and a tunable hydrophobicity that mainly results in a remarkable stability of LEDs, using CdSe/CdZnS NPLs.
Articolo in rivista - Articolo scientifico
colloidal nanoplatelets; conjugated polyelectrolytes; dichalcogenides; interfacial layers; light-emitting devices;
English
21-apr-2020
2020
2
5
1186
1192
reserved
Lagonegro, P., Martella, C., Squeo, B., Carulli, F., Scavia, G., Lamperti, A., et al. (2020). Prolonged Lifetime in Nanocrystal Light-Emitting Diodes Incorporating MoS2-Based Conjugated Polyelectrolyte Interfacial Layer as an Alternative to PEDOT:PSS. ACS APPLIED ELECTRONIC MATERIALS, 2(5), 1186-1192 [10.1021/acsaelm.0c00097].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/314936
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