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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.
American Chemical Society
Publication date: 
21 Apr 2020

Paola Lagonegro, Christian Martella, Benedetta M Squeo, Francesco Carulli, Guido Scavia, Alessio Lamperti, Francesco Galeotti, Benoit Dubertret, Mariacecilia Pasini, Sergio Brovelli, Alessandro Molle, Umberto Giovanella

Biblio References: 
Volume: 2 Issue: 5 Pages: 1186-1192
ACS Applied Electronic Materials