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	C-70/pentacene organic heterojunction as charge generator to realize highly efficient charge carrier injection in organic light-emitting diodes: performance and mechanism analysis
	Guo, Qingxun1; Sun, Hengda1; Yang, Dezhi1,2; Qiao, Xianfeng1,2; Chen, Jiangshan1,2; Ahamad, Tansir3; Alshehri, Saad M.3; Ma, Dongge1,2,3
刊名	Advanced materials interfaces
	2016-07-22
卷号	3期号:14页码:8
关键词	Charge carrier injection Electrode Organic heterojunction Organic light-emitting diodes
ISSN号	2196-7350
DOI	10.1002/admi.201600081
通讯作者	Ma, dongge(mdg1014@ciac.ac.cn)
英文摘要	Highly efficient charge carrier injection from electrodes is basically required for high-performance organic light-emitting diodes (oleds). however, the mismatch of metal work function and energy level of charge carrier transport layers inevitably introduces the injection barrier and also greatly restricts the choice of the electrode metals. here, a planar organic heterojunction (ohj) c-70/pentacene is used as charge generator to realize the highly efficient injection of charge carriers in oleds, not only achieving the high efficiency but also significantly improving the stability. more importantly, the resulting devices show an electrode work function-independent efficiency property, greatly broadening the selectivity of electrode metals. detailed studies are presented on the transport properties of electrons and holes in single-carrier devices based on c-70/pentacene ohj by current density-voltage (j-v) measurements at various temperatures. it can be seen that fowler-nordheim (f-n) tunnel model can be used to well demonstrate the j-v properties, indicating that the charge injection based on ohj is a tunnel process. the impedance measurements found that the lower lowest unoccupied molecular orbit energy level and higher electron mobility properties are very necessary for the used electron-transport materials to reduce the space charge region width, thus realizing highly efficient electron injection.
WOS关键词	TRANSITION-METAL OXIDES ; HIGH-POWER EFFICIENCY ; PHOTOELECTRON-SPECTROSCOPY ; DEVICE PERFORMANCE ; SMALL-MOLECULE ; WORK FUNCTION ; LAYER ; SEMICONDUCTORS ; INTERFACES ; PENTACENE
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000380050400015
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374556
专题	中国科学院大学
通讯作者	Ma, Dongge
作者单位	1.Univ Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China 2.South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China 3.King Saud Univ, Dept Chem, Riyadh 11451, Saudi Arabia
推荐引用方式 GB/T 7714	Guo, Qingxun,Sun, Hengda,Yang, Dezhi,et al. C-70/pentacene organic heterojunction as charge generator to realize highly efficient charge carrier injection in organic light-emitting diodes: performance and mechanism analysis[J]. Advanced materials interfaces,2016,3(14):8.
APA	Guo, Qingxun.,Sun, Hengda.,Yang, Dezhi.,Qiao, Xianfeng.,Chen, Jiangshan.,...&Ma, Dongge.(2016).C-70/pentacene organic heterojunction as charge generator to realize highly efficient charge carrier injection in organic light-emitting diodes: performance and mechanism analysis.Advanced materials interfaces,3(14),8.
MLA	Guo, Qingxun,et al."C-70/pentacene organic heterojunction as charge generator to realize highly efficient charge carrier injection in organic light-emitting diodes: performance and mechanism analysis".Advanced materials interfaces 3.14(2016):8.

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