Time-resolved photoluminescence properties of hybrids based on inorganic AlGaN/GaN quantum wells and colloidal ZnO nanocrystals

被引：1

作者：

Forsberg, Mathias ^{[1
]}

Hemmingsson, Carl ^{[1
]}

Amano, Hiroshi ^{[2
]}

Pozina, Galia ^{[1
]}

机构：

[1] Linkoping Univ, Dept Phys Chem & Biol IFM, S-58183 Linkoping, Sweden

[2] Nagoya Univ, Dept Elect Engn & Comp Sci, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2015年 / 87卷

基金：

瑞典研究理事会;

关键词：

Quantum well structures; Energy transfer; EXCITONS; NANOSTRUCTURES;

D O I：

10.1016/j.spmi.2015.07.017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Dynamic properties are studied for the AlGaN/GaN quantum well (QW) structures with and without the coating of colloidal ZnO nanocrystals (NCs). The QW exciton recombination rate was reduced in such hybrids compared to the bare QW structure only in the sample with the thinnest cap layer of 3 nm. Assuming that one of the recombination mechanisms in this hybrid is non-radiative resonant energy transfer (NRET) between the QW and the energy acceptor material i.e. ZnO NCs, the maximum pumping efficiency was estimated to be similar to 42% at 60 K. The NRET effect is, however, vanished after several months despite that the hybrid structures are composed of chemically stable components. (C) 2015 Published by Elsevier Ltd.

引用

页码：38 / 41

页数：4

共 9 条

[1] Excitons and optical nonlinearities in hybrid organic-inorganic nanostructures
Agranovich, VM
Basko, DM
La Rocca, GC
Bassani, F
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1998, 10 (42) : 9369 - 9400
[2] Mechanism for radiative recombination in ZnCdO alloys
Department of Physics, Chemistry and Biology, Linköping University, S-581 83 Linköping, Sweden
不详
不详
[J]. Appl Phys Lett, 2007, 26
[3] Dynamic properties of excitons in ZnO/AlGaN/GaN hybrid nanostructures
Forsberg, Mathias
Hemmingsson, Carl
Amano, Hiroshi
Pozina, Galia
[J]. SCIENTIFIC REPORTS, 2015, 5
[4] Golub LE, 1998, PHYS STATUS SOLIDI B, V205, P203, DOI 10.1002/(SICI)1521-3951(199801)205:1<203::AID-PSSB203>3.0.CO
[5] 2-N
[6] Influence of polarization fields and depletion fields on photoluminescence of AlGaN/GaN multiple quantum well structures
Monemar, B
Haratizadeh, H
Paskov, PP
Pozina, G
Holtz, PO
Bergman, JP
Kamiyama, S
Iwaya, M
Amano, H
Akasaki, I
[J]. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2003, 237 (01): : 353 - 364
[7] Surface potential effect on excitons in AlGaN/GaN quantum well structures
Pozina, G.
Hemmingsson, C.
Amano, H.
Monemar, B.
[J]. APPLIED PHYSICS LETTERS, 2013, 102 (08)
[8] Size dependent carrier recombination in ZnO nanocrystals
Pozina, G.
Yang, L. L.
Zhao, Q. X.
Hultman, L.
Lagoudakis, P. G.
[J]. APPLIED PHYSICS LETTERS, 2010, 97 (13)
[9] Dependence of Resonance Energy Transfer on Exciton Dimensionality
Rindermann, Jan Junis
Pozina, Galia
Monemar, Bo
Hultman, Lars
Amano, Hiroshi
Lagoudakis, Pavlos G.
[J]. PHYSICAL REVIEW LETTERS, 2011, 107 (23)

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