Enhancing the device performance of a blue light‐emitting copolymer using CdSe/ZnS quantum dots

Abstract

An alternating triarylamine‐functionalized fluorene‐based copolymer synthesized using a Suzuki–Miyaura cross‐coupling procedure is used as blue emitting layer in polymer light‐emitting diodes (PLEDs). Subsequently, the effects of CdSe/ZnS quantum dots (QDs) on the optoelectronic properties of the copolymer are investigated. Therefore, CdSe/ZnS QDs are embedded into the copolymer matrix and hybrid PLEDs are fabricated. The devices comprised of CdSe/ZnS QDs reveal enhanced performances, yielding about 3.4 times more luminous efficiency than that of the device without QDs. Further enhancement is achieved by using electron transport layer; the luminous efficiency rose from 0.065 to 1.740 cd A−1 for the hybrid PLEDs, corresponding to a superb 27‐fold intensification of the efficiency. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 147–156

Annealing effect of gold thin films on the light output performances of organic light emitting diodes

“…Recently, the application of nanoparticles (NPs) has been a prevailing research topic in order to enhance the performances of polymer OLEDs [5][6][7][8][9]. Due to their small dimensions (< 100 nm), nanostructures have high surface/volume ratio and high surface energy compared to bulk materials.…”