Energy transfer ultraviolet photodetector with 8-hydroxyquinoline derivative-metal complexes as acceptors

We choose 8-hydroxyquinoline derivative-metal complexes（Beq,Mgq,and Znq） as the acceptors（A） and 4,4＇,4”-tri-（2-methylphenyl phenylamino） triphenylaine（m-MTDATA） as the donor（D） respectively to study the existing energy transfer process in the organic ultraviolet（UV） photodetector（PD）,which has an i...

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Published inChinese physics B Vol. 24; no. 2; pp. 490 - 493
Main Author 吴双红 李文连 陈志 李世彬 王晓晖 魏雄邦
Format Journal Article
LanguageEnglish
Published 01.02.2015
Subjects
8-羟基喹啉衍生物
Blends
Decomposition
Devices
Energy levels
Energy transfer
Formations
Lithium
Photodetectors
Ultraviolet
受体
激基复合物
甲基苯基
紫外探测器
紫外线照射
能量传递过程
金属配合物
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Summary:We choose 8-hydroxyquinoline derivative-metal complexes（Beq,Mgq,and Znq） as the acceptors（A） and 4,4＇,4”-tri-（2-methylphenyl phenylamino） triphenylaine（m-MTDATA） as the donor（D） respectively to study the existing energy transfer process in the organic ultraviolet（UV） photodetector（PD）,which has an important influence on the sensitivity of PDs.The energy transfer process from D to A without exciplex formation is discussed,differing from the working mechanism of previous PDs with Gaq[Zisheng Su,Wenlian Li,Bei Chu,Tianle Li,Jianzhuo Zhu,Guang Zhang,Fei Yan,Xiao Li,Yiren Chen and Chun-Sing Lee 2008 Appl.Phys.Lett.93 103309）]and REq[J.B.Wang,W.L.Li,B.Chu,L.L.Chen,G.Zhang,Z.S.Su,Y.R.Chen,D.F.Yang,J.Z.Zhu,S.H.Wu,F.Yan,H.H.Liu,C.S.Lee 2010 Org.Electron.111301]used as an A material.Under 365-nm UV irradiation with an intensity of 1.2 mW/cm~2,the m-MTDATA：Beq blend device with a weight ratio of 1：1 shows a response of 192 mAAV with a detectivity of 6.5 × 10~（11） Jones,which exceeds those of PDs based on Mgq（146 mA/W） and Znq（182 mA/W） due to better energy level alignment between m-MTDATA/Beq and lower radiative decay.More photophysics processes of the PDs involved are discussed in detail.
Bibliography:organic photodetector, energy transfer, ultraviolet
Wu Shuang-Hong, Li Wen-Lian, Chen Zhi, Li Shi-Bin, Wang Xiao-Hui, and Wei Xiong-Bang（ a） School of Optoelectronic Information and State Key Laboratory of Electronic Thin Films ＆ Integrated Devices, University of Electronic Science and Technology of China （UESTC）, Chengdu 610054, China; b） State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;c）Department of Electrical ＆ Computer Engineering, University of Kentucky, Lexington, KY40506, USA
We choose 8-hydroxyquinoline derivative-metal complexes（Beq,Mgq,and Znq） as the acceptors（A） and 4,4＇,4”-tri-（2-methylphenyl phenylamino） triphenylaine（m-MTDATA） as the donor（D） respectively to study the existing energy transfer process in the organic ultraviolet（UV） photodetector（PD）,which has an important influence on the sensitivity of PDs.The energy transfer process from D to A without exciplex formation is discussed,differing from the working mechanism of previous PDs with Gaq[Zisheng Su,Wenlian Li,Bei Chu,Tianle Li,Jianzhuo Zhu,Guang Zhang,Fei Yan,Xiao Li,Yiren Chen and Chun-Sing Lee 2008 Appl.Phys.Lett.93 103309）]and REq[J.B.Wang,W.L.Li,B.Chu,L.L.Chen,G.Zhang,Z.S.Su,Y.R.Chen,D.F.Yang,J.Z.Zhu,S.H.Wu,F.Yan,H.H.Liu,C.S.Lee 2010 Org.Electron.111301]used as an A material.Under 365-nm UV irradiation with an intensity of 1.2 mW/cm~2,the m-MTDATA：Beq blend device with a weight ratio of 1：1 shows a response of 192 mAAV with a detectivity of 6.5 × 10~（11） Jones,which exceeds those of PDs based on Mgq（146 mA/W） and Znq（182 mA/W） due to better energy level alignment between m-MTDATA/Beq and lower radiative decay.More photophysics processes of the PDs involved are discussed in detail.
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/2/028505