Jun Ni

Progress in high work function TCO OLED anode alternatives and OLED nanopixelation

As organic light-emitting diodes (OLEDs) increase in sophistication and our understanding of building block-structure-luminous response mechanism increases, the remarkable properties of these heterostructures raise intriguing possibilities for future optoelectronics. In this contribution, we address two complimentary areas of interest in OLED science and engineering: (i) development and application of new transparent conducting oxide (TCO) materials for OLED anodes; (ii) effective OLED patterning strategies for nanofabrication.

Highly transparent and conductive CdO thin films as anodes for organic light-emitting diodes: Film microstructure and morphology effects on performance

— Highly conductive and transparent CdO thin films have been grown on glass and on single-crystal MgO(100) by MOCVD at 400°C and were used as transparent anodes for fabricating small-molecule organic-light emitting diodes (OLEDs). Device response and applications potential have been investigated and compared with those of control devices based on commercial ITO anodes. It is demonstrated that highly conductive CdO thin films of proper morphology can efficiently inject holes into such devices, rendering them promising anode materials for OLEDs. Importantly, this work also suggests the feasibility of employing other CdO-based TCOs as anodes for high-performance OLEDs.

Highly Transparent and Conductive CdO Thin Films as Anodes for Organic Light-Emitting Diodes

In this paper, CdO thin films are used for the first time as transparent anodes for organic light-emitting diodes (OLEDs). Highly conductive and transparent CdO thin films have been grown on glass and on single-crystal MgO(100) by low pressure metal-organic chemical vapor deposition (MOCVD) at 400°C, and were implemented in small-molecule OLED fabrication. Device response and applications potential have been investigated and compared with those of commercial ITO-based control devices. It is found that as-deposited CdO thin films are capable of injecting holes into such devices, rendering them promising anode materials for OLEDs. A maximum luminance of 32,000 cd/m 2 and an external forward quantum efficiency of 1.4 %, with a turn-on voltage of 3.2 V are achieved on MgO(100)/CdO-based devices.

New Low-melting Cadmium Precursors for the Detailed Study of Texture Effects in MOCVD Derived CdO Thin-Films

from SciFinder