Jump to main content
Jump to site search

Issue 48, 2014
Previous Article Next Article

A novel intermediate connector with improved charge generation and separation for large-area tandem white organic lighting devices

Author affiliations

Abstract

An intermediate connector (IC) consisting of lithium (Li) doped 4,7-diphenyl-1,10-phenanthroline (BPhen)/Al/tetrafluoro-tetracyanoquinodimethane (F4-TCNQ)/1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile (HAT-CN) is developed for fabricating tandem white organic light-emitting diodes (WOLEDs). An investigation of the charge generation and separation process in Bphen:Li/Al/F4-TCNQ/HAT-CN, which is carried out by analysis of the current–voltage and capacitance–voltage characteristics, shows that the proposed IC structure is suitable as a connecting unit in tandem OLEDs. The tandem WOLED based on a silicon compound host material of 10-phenyl-2′-(triphenylsilyl)-10H-spiro [acridine-9,9′-fluorene] (SSTF) with the proposed IC structure exhibits a maximum current efficiency of 159.2 cd A−1 and a maximum power efficiency of 69.4 lm W−1. For application in large-area OLEDs, a 150 × 150 mm2 tandem lighting panel with maximum efficiencies of 231.8 cd A−1 and 52.9 lm W−1, correlated color temperature of 3000 K and Commission International de I'Eclairage (CIE) coordinates of (0.34, 0.45) is also demonstrated.

Graphical abstract: A novel intermediate connector with improved charge generation and separation for large-area tandem white organic lighting devices

Back to tab navigation

Supplementary files

Article information


Submitted
16 Sep 2014
Accepted
30 Oct 2014
First published
03 Nov 2014

J. Mater. Chem. C, 2014,2, 10403-10408
Article type
Paper
Author version available

A novel intermediate connector with improved charge generation and separation for large-area tandem white organic lighting devices

L. Ding, Y. Sun, H. Chen, F. Zu, Z. Wang and L. Liao, J. Mater. Chem. C, 2014, 2, 10403
DOI: 10.1039/C4TC02082K

Social activity

Search articles by author

Spotlight

Advertisements