Issue 48, 2014

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

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

Supplementary files

Article information

Article type
Paper
Submitted
16 Sep 2014
Accepted
30 Oct 2014
First published
03 Nov 2014

J. Mater. Chem. C, 2014,2, 10403-10408

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

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements