Promising applications of aggregation-induced emission luminogens in organic optoelectronic devices

Maoxing Yu,Zujin Zhao,Ben Zhong Tang,Ruishan Huang,Jingjing Guo

doi:10.1186/s43074-020-00012-y

Abstract

Since the first report of aggregation-induced emission (AIE) concept in 2001, it has received intense attentions from academy and industry because of its important applications in diverse research fronts. Up to now, the luminogens with AIE property (AIEgens) have been widely used in optoelectronic devices, fluorescent bioprobes and chemosensors, and researchers have also committed to exploring the potentials of AIEgens in other cross-cutting areas. The AIEgens have shown superior advantages such as highly efficient emissions in the aggregated state and thus exhibited better performances in comparison with traditional luminescent materials whose emissions are usually quenched upon aggregate formation. In view of the significant achievements of AIEgens in recent years, this review presents representative advancements of AIEgens for the applications in organic optoelectronic devices, mainly including organic light-emitting diodes (OLEDs), circularly polarized luminescence (CPL) devices, electrofluorochromic (EFC) devices, luminescent solar concentrators (LSCs), and liquid crystal displays (LCDs). Not only the design strategies of AIEgens for these optoelectronic devices are analyzed, but also their structure-property relationship and working mechanism are elucidated. It is foreseeable that robust AIEgens with specific functionalities will find more and more applications in various research fields and play an increasingly important role in high-tech devices.

Highlights

The progress of the contemporary society is inseparable from exploitation of semiconductor industry [1]
In the field of organic optoelectronics, functional materials derived from AIE luminogens (AIEgens) have occupied the irreplaceable positions
In view of the significant achievements of AIEgens in recent years, this review presents representative advancements of AIEgens for the optoelectronic device applications of organic light-emitting diodes (OLEDs), luminescent solar concentrators (LSCs), EFC and liquid crystal displays (LCDs)

Summary

Introduction

The progress of the contemporary society is inseparable from exploitation of semiconductor industry [1]. TPB-AC neat film showed a high horizontal dipole ratio of 79%, revealing a great potential in development of high-performance nondoped OLEDs. As a result, TPB-AC was suitable to fabricate the pure blue OLED with the maximum EQE of 7.0% and extremely low efficiency roll-off of 10% at 1000 cd m− 2, and a great host for PhOLEDs with maximum EQEs of 21.0% for green, 27.3% for orange, and 26.1% for red OLEDs, which even still remained at 19.5%, 25.9%, and 24.1% at 1000 cd m− 2, respectively (Fig. 2b).

Results

Conclusion