Quantum dot light-emitting diode with quantum dots inside the hole transporting layers

We report a hybrid, quantum dot (QD)-based, organic light-emitting diode architecture using a noninverted structure with the QDs sandwiched between hole transporting layers (HTLs) outperforming the reference device structure implemented in conventional noninverted architecture by over five folds and...

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Bibliographic Details
Main Authors: Leck, Kheng Swee, Divayana, Yoga, Zhao, Dewei, Yang, Xuyong, Abiyasa, Agus Putu, Mutlugun, Evren, Gao, Yuan, Liu, Shuwei, Tan, Swee Tiam, Sun, Xiaowei, Demir, Hilmi Volkan
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2013
Subjects:
Online Access:https://hdl.handle.net/10356/99823
http://hdl.handle.net/10220/17230
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Institution: Nanyang Technological University
Language: English
Description
Summary:We report a hybrid, quantum dot (QD)-based, organic light-emitting diode architecture using a noninverted structure with the QDs sandwiched between hole transporting layers (HTLs) outperforming the reference device structure implemented in conventional noninverted architecture by over five folds and suppressing the blue emission that is otherwise observed in the conventional structure because of the excess electrons leaking towards the HTL. It is predicted in the new device structure that 97.44% of the exciton formation takes place in the QD layer, while 2.56% of the excitons form in the HTL. It is found that the enhancement in the external quantum efficiency is mainly due to the stronger confinement of exciton formation to the QDs.