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题名: Broadband photoresponse promoted by interfacial electron transfer in diketopyrrolopyrrole-based compound/ZnO hybrid nanocomposites
作者: Lin, Hongtao1, 2; Wu, Yishi1; Yu, Zhenyi1; Fu, Hongbing1
刊名: NEW JOURNAL OF CHEMISTRY
发表日期: 2016
卷: 40, 期:2, 页:1610-1617
收录类别: SCI
英文摘要: Photoinitiated interfacial electron transfer from organic semiconductors to inorganic ones is extremely important in organic/inorganic hybrid optoelectronic materials. Herein, we have prepared hybrid ZnO nanorods by grafting TDPP and TTDPP molecules through carboxyl acid groups. The steady-state spectroscopy results revealed that photoluminescence was subjected to severe quenching in the hybrid nanocomposites. Furthermore, time-resolved fluorescence and femtosecond transient absorption data verified the occurrence of the interface charge transfer between TDPP or TTDPP molecules and ZnO nanorods in the hybrid nanocomposites. The high performance UV-vis photodetector based on the TTDPP/ZnO hybrid have been fabricated with a photoresponsivity of 16.9 A W-1 and an on/off ratio as high as 10(4). The excellent visible-light photoresponse of the hybrid device can be attributed to the broadband absorption after the anchoring of the TTDPP compound on the surface of ZnO nanorods, the efficient cascade charge transfer process and the excellent capability of ZnO nanorods to provide direct and stable pathways for the transport of photogenerated electrons toward the collection electrode. This provides guidelines for the construction of organic/inorganic hybrids for optoelectronic applications.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35896
Appears in Collections:分子动态与稳态结构实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Key Lab Photochem,BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100080, Peoples R China
2.Shandong Univ Technol, Coll Chem Engn, Zibo, Peoples R China
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