Efficient energy transfer from hole transporting materials to CdSe-core CdS/ZnCdS/ZnS-multishell quantum dots in type II aligned blend films

被引：18

作者：

Jing, Pengtao ^{[1
]}

Yuan, Xi ^{[1
,2
]}

Ji, Wenyu ^{[1
]}

Ikezawa, Michio ^{[3
]}

Liu, Xueyan ^{[1
]}

Zhang, Ligong ^{[1
]}

Zhao, Jialong ^{[1
]}

Masumoto, Yasuaki ^{[3
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130033, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 09期

基金：

中国国家自然科学基金;

关键词：

LIGHT-EMITTING-DIODES; CHARGE SEPARATION; NANOCRYSTALS; ELECTROLUMINESCENCE; NANOPARTICLES; POLYMER; DEVICES;

D O I：

10.1063/1.3633110

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the energy transfer between CdSe core/shell quantum dots (QDs) and hole transporting materials (HTMs) in type II aligned inorganic/organic blend films by using steady-state and time-resolved photoluminescence (PL) spectroscopy. The lengthening and shortening in PL lifetimes of the QDs in HTMs under resonant excitation condition were explained by energy transfer and charge separation processes. Surprisingly, the maximum energy transfer efficiency from 4,4',4 ''-Tris (carbazol-9-yl)-triphenylamine (TcTa) to CdSe/CdS/ZnCdS/ZnS core/multishell QDs was determined to be 86% by calculating the excited state lifetime of the TcTa molecules participating in the energy transfer process. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3633110]

引用

页数：3

共 14 条

[1] Temperature-Dependent Photoluminescence of CdSe-Core CdS/CdZnS/ZnS-Multishell Quantum Dots
Jing, Pengtao
Zheng, Jinju
Ikezawa, Micho
Liu, Xueyan
Lv, Shaozhe
Kong, Xianggui
Zhao, Jialong
Masumoto, Yasuaki
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (31): : 13545 - 13550
[2] Resonant Energy Transfer between CdSe/ZnS Type I and CdSe/ZnTe Type II Quantum Dots
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Chen, Chih-Wei
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JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (35): : 15548 - 15552
[3] Surface plasmon enhanced energy transfer between type I CdSe/ZnS and type II CdSe/ZnTe quantum dots
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Chen, C. W.
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[10] Detection of lead (II) with a "turn-on" fluorescent biosensor based on energy transfer from CdSe/ZnS quantum dots to graphene oxide
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