Fabrication and comparative optical characterization of n-ZnO nanostructures (nanowalls, nanorods, nanoflowers and nanotubes)/p-GaN white-light-emitting diodes

被引：59

作者：

Alvi, N. H. ^{[1
]}

Ali, S. M. Usman ^{[1
]}

Hussain, S. ^{[1
]}

Nur, O. ^{[1
]}

Willander, M. ^{[1
]}

机构：

[1] Linkoping Univ, Dept Sci & Technol ITN, SE-60174 Norrkoping, Sweden

来源：

SCRIPTA MATERIALIA | 2011年 / 64卷 / 08期

关键词：

Zinc oxide; Nanostructure; Aqueous chemical growth; Optical properties; Heterojunctions; ZINC-OXIDE; FIELD-EMISSION; THIN-FILMS; NANOWIRES; EFFICIENCY; TEMPERATURE; SENSORS; GROWTH; ARRAYS; OXYGEN;

D O I：

10.1016/j.scriptamat.2010.11.046

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

White light-emitting diodes (LED) based on ZnO (nanowalls, nanorods, nanoflowers and nanotubes)/p-GaN were fabricated and their electrical, optical and electro-optical characteristics were comparatively characterized. All the LED showed rectifying behavior. The nanowalls and nanorods structures have the highest photoluminescence emission intensity in the visible and UV (at 3.29 eV) regions, respectively. The nanowalls have the highest color rendering index, with a value of 95, and the highest electroluminescence intensity with peaks approximately centered at 420, 450 nm and broad peak covering the visible region. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：697 / 700

页数：4

共 29 条

[1] A comparative analysis of deep level emission in ZnO layers deposited by various methods [J].

Ahn, Cheol Hyoun ;

Kim, Young Yi ;

Kim, Dong Chan ;

Mohanta, Sanjay Kumar ;

Cho, Hyung Koun .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (01)

[2] Large hexagonal arrays of aligned ZnO nanorods [J].

Banerjee, D ;

Rybczynski, J ;

Huang, JY ;

Wang, DZ ;

Kempa, K ;

Ren, ZF .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2005, 80 (04) :749-752

[3] Origin of the near-band-edge photoluminescence emission in aqueous chemically grown ZnO nanorods [J].

Bekeny, Chegnui ;

Voss, Tobias ;

Gafsi, Houcem ;

Gutowski, Juergen ;

Postels, Bianca ;

Kreye, Marc ;

Waag, Andreas .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (10)

[4] Formation of β-Ga2O3-TiO2 "Nanobareodes" from core-shell nanowires [J].

Chang, KW ;

Wu, JJ .

ADVANCED MATERIALS, 2005, 17 (02) :241-+

[5] Plasma assisted molecular beam epitaxy of ZnO on c-plane sapphire: Growth and characterization [J].

Chen, YF ;

Bagnall, DM ;

Koh, HJ ;

Park, KT ;

Hiraga, K ;

Zhu, ZQ ;

Yao, T .

JOURNAL OF APPLIED PHYSICS, 1998, 84 (07) :3912-3918

[6] Surface state trapping models for SnO2-based microhotplate sensors [J].

Ding, JH ;

McAvoy, TJ ;

Cavicchi, RE ;

Semancik, S .

SENSORS AND ACTUATORS B-CHEMICAL, 2001, 77 (03) :597-613

[7]

Freund L.B., 2003, THIN FILM MAT

[8] NEW ONE-DIMENSIONAL CONDUCTORS - GRAPHITIC MICROTUBULES [J].

HAMADA, N ;

SAWADA, S ;

OSHIYAMA, A .

PHYSICAL REVIEW LETTERS, 1992, 68 (10) :1579-1581

[9] Fabrication and electrical properties of micro/nanoporous ZnO : Al films [J].

Hosono, E ;

Fujihara, S ;

Kimura, T .

JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (05) :881-886

[10] Growth of layered basic zinc acetate in methanolic solutions and its pyrolytic transformation into porous zinc oxide films [J].

Hosono, E ;

Fujihara, S ;

Kimura, T ;

Imai, H .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 272 (02) :391-398

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