Indexed by:
Abstract:
The performance of perovskite quantum dot light-emitting diodes (PeQLEDs) has been rapidly enhanced recently, but the devices are still stuck in the stage of using small-scale solution processes, such as spin-coating. In this work, we report the realization of high performance PeQLEDs by using inkjet printing technique. We demonstrate the preparation of a printable perovskite quantum dot ink by using a hybrid solvent consisting of high boiling solvent dodecane and low boiling solvent n-octane. A universal strategy for eliminating coffee rings during inkjet printing of perovskite inks is developed based on the modulation of ink formulation, and the stacking model of perovskite quantum dot in a pixel pit structure is proposed. The inkjet-printed PeLEDs exhibit a low turn-on voltage of 2.7 V, a brightness of 10992 cd/m2 at 6.6 V and a maximum current efficiency of 8.67 cd/ A, which is by far the highest value reported for inkjet-printed PeLEDs. The results pave a way for future realization of high performance pixelated PeLED displays with inkjet printing technique.
Keyword:
Reprint 's Address:
Email:
Version:
Source :
ORGANIC ELECTRONICS
ISSN: 1566-1199
Year: 2021
Volume: 93
3 . 8 6 8
JCR@2021
2 . 7 0 0
JCR@2023
ESI Discipline: PHYSICS;
ESI HC Threshold:87
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 23
SCOPUS Cited Count: 25
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: