Effects of surface morphology on the optical and electrical properties of Schottky diodes of CBD deposited ZnO nanostructures

被引：12

作者：

Mwankemwa, Benard S. ^{[1
,2
]}

Akinkuade, Shadrach ^{[1
]}

Maabong, Kelebogile ^{[1
,3
]}

Nel, Jackie M. ^{[1
]}

Diale, Mmantsae ^{[1
]}

机构：

[1] Univ Pretoria, Dept Phys, Private Bag X20, Hatfield, South Africa

[2] Univ Dodoma, Dept Phys, Sch Phys Sci, Coll Nat & Math Sci, POB 338, Dodoma, Tanzania

[3] Univ Botswana, Dept Phys, Private Bag 0022, Gaborone, Botswana

来源：

PHYSICA B-CONDENSED MATTER | 2018年 / 535卷

基金：

新加坡国家研究基金会;

关键词：

ZnO nanostructures; Surface morphology; Optical properties; Electrical characterization; Transport mechanism; PHOTOVOLTAIC PERFORMANCE; HETEROJUNCTION; LUMINESCENCE; EXTRACTION;

D O I：

10.1016/j.physb.2017.07.030

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on effect of surface morphology on the optical and electrical properties of chemical bath deposited Zinc oxide (ZnO) nanostructures. ZnO nanostructures were deposited on the seeded conducting indium doped tin oxide substrate positioned in three different directions in the growth solution. Field emission scanning electron microscopy was used to evaluate the morphological properties of the synthesized nanostructures and revealed that the positioning of the substrate in the growth solution affects the surface morphology of the nanostructures. The optical absorbance, photoluminescence and Raman spectroscopy of the resulting nanostructures are discussed. The electrical characterization of the Schottky diode such as barrier height, ideality factor, rectification ratios, reverse saturation current and series resistance were found to depend on the nanostructures morphology. In addition, current transport mechanism in the higher forward bias of the Schottky diode was studied and space charge limited current was found to be the dominant transport mechanism in all samples.

引用

页码：175 / 180

页数：6

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