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Time-resolved photoluminescence characteristics of subnanometer ZnO clusters confined in the micropores of zeolites
Shi, Jianying; Chen, Jun; Feng, Zhaochi; Chen, Tao; Wang, Xiuli; Ying, Pinliang; Li, Can; Li C(李灿); Li C(李灿)
刊名JOURNAL OF PHYSICAL CHEMISTRY B
2006-12-28
DOI10.1021/jp060439z
110期:51页:25612-25618
收录类别SCI
文章类型Article
部门归属5
项目归属503
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]ZINC-OXIDE ; RELAXATION DYNAMICS ; ELECTRONIC STATE ; SIZE DEPENDENCE ; LUMINESCENCE ; PARTICLES ; PHOTOCHEMISTRY ; CRYSTALLITES ; PHOTOPHYSICS ; EXCITONS
英文摘要Subnanometric ZnO clusters confined in different micropore zeolites are studied by steady-state and nanosecond time-resolved photoluminescence (PL) spectroscopy. The microsecond-scale lifetime is observed at room temperature for ZnO clusters confined in zeolites, which is significantly different from that of macrocrystalline ZnO on the external surface of zeolites. The dependence of luminescence lifetime on the amount of ZnO in zeolites indicates that the electron-phonon interactions between the ZnO clusters and the zeolite host significantly affect the dynamic relaxation process of ZnO clusters. The long lifetime luminescence of ZnO clusters can be achieved by weakening the coupling of electronic transition to zeolites host phonons. The similar long-lived luminescence is obtained when dispersing ZnO clusters into the porous SiO2. It is suggested that encapsulating the semiconductor cluster in the porous support is a possible way to inhibit or to retard the electron-hole recombination.
语种英语
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WOS记录号WOS:000242974300015
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被引频次:27[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/98359
专题中国科学院大连化学物理研究所
通讯作者Li C(李灿); Li C(李灿)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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Shi, Jianying,Chen, Jun,Feng, Zhaochi,et al. Time-resolved photoluminescence characteristics of subnanometer ZnO clusters confined in the micropores of zeolites[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2006,110(51):25612-25618.
APA Shi, Jianying.,Chen, Jun.,Feng, Zhaochi.,Chen, Tao.,Wang, Xiuli.,...&李灿.(2006).Time-resolved photoluminescence characteristics of subnanometer ZnO clusters confined in the micropores of zeolites.JOURNAL OF PHYSICAL CHEMISTRY B,110(51),25612-25618.
MLA Shi, Jianying,et al."Time-resolved photoluminescence characteristics of subnanometer ZnO clusters confined in the micropores of zeolites".JOURNAL OF PHYSICAL CHEMISTRY B 110.51(2006):25612-25618.
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