Small Molecule-Modified Hole Transport Layer Targeting Low Turn-On-Voltage, Bright, and Efficient Full-Color Quantum Dot Light Emitting Diodes

doi:10.1021/acsami.7b16261

GIEC OpenIR

	Small Molecule-Modified Hole Transport Layer Targeting Low Turn-On-Voltage, Bright, and Efficient Full-Color Quantum Dot Light Emitting Diodes
	Li, Jingling 1,2,3; Liang, Zheng 1,2; Su, Qiucheng1,2 ; Jin, Hu 1,2,4; Wang, Kelai ; Xu, Gang1,2,3 ; Xu, Xueqing1,2,3,4
	2018-01-31
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
卷号	10 期号:4 页码:3865-3873
通讯作者	Xu, Xueqing(xuxq@ms.giec.ac.cn)
摘要	For an organic inorganic hybrid quantum dot light-emitting diode (QD-LED), enhancing hole injection into the emitter for charge "balance is a priority to achieve efficient device performance. Aiming at this) we employ N,N'-bis(3-methylphenyl)-N,N'-bis(phenyl)benzidine (TPD) as the additional hole transport material which was mixed with poly(9-vinylcarbaaole) (PVK) to form a composite hole transport layer (HTL) or was employed to, construct a TPD/PVK bilayer structure. Enabled by this TPD modification, the green QD-LED (at a wavelength of 515 nm) exhibits a subband gap turn-on voltage of 2.3 V and a highest luminance up to 56 157 cd/m(2). Meanwhile, such TPD modification is also beneficial to acquire efficient blue and red QD-LEDs. In particular, the external quantum efficiencies (EQEs) for these optimized full-color QD-LEDs are 8.62, 9.22, and 13.40%, which are 3-4 times higher than those of their pure PVK-based counterparts. Revealed by the electrochemical impedance spectroscopy, the improved electroluminescent efficiency is ascribable to the reductions of recombination resistance and charge-transfer resistance. The prepared QD-LEDs surpass the EQE values achieved in previous reports, considering devices with small-molecule-modified HTLs. This work offers a general but simple and very effective approach to realize the low turn-on-voltage) bright, and efficient full-color QD-LEDs via this solution-processable HTL modification.
关键词	quantum dot full-color QD-LEDs composite HTL double HTLs interface modification
DOI	10.1021/acsami.7b16261
关键词[WOS]	DOPED ZNO NANOPARTICLES ; HIGHLY EFFICIENT ; SOLAR-CELLS ; IMPROVED PERFORMANCE ; DEVICES ; ELECTROLUMINESCENCE ; POLYMER ; PHOTOLUMINESCENCE ; NANOCRYSTALS ; INJECTION
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21273241] ; Natural Science Foundation of Guangdong Province[2015A030310501] ; Project on the Collaborative Innovation and Environmental Construction Platform of Guangdong Province[2014A050503051] ; Key Project on Synergy Collaborative Innovation of Guangzhou City[201704030069] ; Key Project of Science and Technology of Dongguan City
WOS研究方向	Science & Technology - Other Topics ; Materials Science
项目资助者	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; Project on the Collaborative Innovation and Environmental Construction Platform of Guangdong Province ; Key Project on Synergy Collaborative Innovation of Guangzhou City ; Key Project of Science and Technology of Dongguan City
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000424728800081
出版者	AMER CHEMICAL SOC
引用统计	被引频次：43[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/23484
专题	中国科学院广州能源研究所
通讯作者	Xu, Xueqing
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Dongguan Univ Technol, Dongguan 523808, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Li, Jingling,Liang, Zheng,Su, Qiucheng,et al. Small Molecule-Modified Hole Transport Layer Targeting Low Turn-On-Voltage, Bright, and Efficient Full-Color Quantum Dot Light Emitting Diodes[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(4):3865-3873.
APA	Li, Jingling.,Liang, Zheng.,Su, Qiucheng.,Jin, Hu.,Wang, Kelai.,...&Xu, Xueqing.(2018).Small Molecule-Modified Hole Transport Layer Targeting Low Turn-On-Voltage, Bright, and Efficient Full-Color Quantum Dot Light Emitting Diodes.ACS APPLIED MATERIALS & INTERFACES,10(4),3865-3873.
MLA	Li, Jingling,et al."Small Molecule-Modified Hole Transport Layer Targeting Low Turn-On-Voltage, Bright, and Efficient Full-Color Quantum Dot Light Emitting Diodes".ACS APPLIED MATERIALS & INTERFACES 10.4(2018):3865-3873.