Fig. 1: Flexible, substrateless OLEDs with water-resistant, hybrid TFE barriers.
From: A substrateless, flexible, and water-resistant organic light-emitting diode
a Schematic illustration of stack architecture with active layers in neutral plane (middle). Structure of the red-emitting p-i-n OLED stack used (left). Layer composition of TFE barriers (right). Barriers consist of parylene-C (P), Al2O3 (A), and a nanolaminate of alternating Al2O3 and ZrO2 layers each with a nominal thickness of 3 nm (N). b Photograph of a flexible OLED with P/N/P/N lower TFE barrier, top-right pixel operated. c AFM topography images of the bare top surface of different lower TFE barrier layers and of display-grade glass (top row) and of the same samples after depositing a 20 nm-thick semi-transparent silver anode (bottom row). Rq, root-mean-square roughness across each image. d Transmittance spectra for each of the three lower TFE barriers.
