Aluminium doping and optical property control of electrodeposited zinc oxide nanorods induced by ammonium nitrate

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Aluminium doping and optical property control of electrodeposited zinc oxide nanorods induced by ammonium nitrate

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- Aluminium doping and optical property control of electrodeposited zinc oxide nanorods induced by ammonium nitrate
- Optics and Precision Engineering Vol. 23, Issue 5, Pages: 1288-1296(2015)
- 作者机构：
  
  北京低碳清洁能源研究所北京,102211
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152305.1288
  CLC： TM914.4+2
- Received：28 August 2014，
  
  Revised：08 October 2014，
  
  Published：25 May 2015
- 稿件说明：
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汤洋, 郭逦达, 张增光等. 硝酸铵诱导电沉积氧化锌纳米柱的铝掺杂及光学性质操控[J]. 光学精密工程, 2015,23(5): 1288-1296

TANG Yang, GUO Li-da, ZHANG Zeng-guang etc. Aluminium doping and optical property control of electrodeposited zinc oxide nanorods induced by ammonium nitrate[J]. Editorial Office of Optics and Precision Engineering, 2015,23(5): 1288-1296
汤洋, 郭逦达, 张增光等. 硝酸铵诱导电沉积氧化锌纳米柱的铝掺杂及光学性质操控[J]. 光学精密工程, 2015,23(5): 1288-1296 DOI： 10.3788/OPE.20152305.1288.

TANG Yang, GUO Li-da, ZHANG Zeng-guang etc. Aluminium doping and optical property control of electrodeposited zinc oxide nanorods induced by ammonium nitrate[J]. Editorial Office of Optics and Precision Engineering, 2015,23(5): 1288-1296 DOI： 10.3788/OPE.20152305.1288.

摘要

为了使新型薄膜太阳能电池结构中的ZnO纳米柱阵列能高效捕获光子与收集载流子

研究了提高ZnO纳米柱阵列的电导率和操控其光学性质的方法。使用电沉积方法在溶解有Zn(NO

3

)

2

、NH

4

NO

3

、Al(NO

3

)

3

的水溶液中制备了Al掺杂的ZnO纳米柱阵列。实验显示

通过控制电解液中NH

4

NO

3

的浓度可操控所制备的ZnO纳米柱阵列的直径、密度和间距。电解液中NH

4

NO

3

浓度的增加会导致所制备的ZnO纳米柱中Al/Zn的质量比显著增大

通过控制NH

4

NO

3

在溶液中的添加即可在3.72~3.76 eV内调控所制备的ZnO纳米柱的光学带隙宽度

并能够对其透射、反射、吸收等光学性质进行操控。另外

在电解液中添加NH

4

NO

3

可在377~449 meV内调控所制备的ZnO纳米柱的斯托克斯位移

从而操控ZnO纳米柱内部的非辐射复合。因此

在电解液中使用NH

4

NO

3

增强所制备的ZnO纳米柱中Al的含量

不仅可使ZnO纳米柱在保持高迁移率的条件下具有高的电导率

还可实现对光学性质的操控。

Abstract

To allow the ZnO nanorod arrays in new thin film solar cells to capture photons and to collect carriers effectively

a method to improve the conductivity of the ZnO nanorods and to control their optical properties was researched. Al-doped ZnO nanorod arrays were prepared by electrodeposition in aqueous solutions with Zn(NO

3

)

2

NH

4

NO

3

and Al(NO

3

)

3

. The experimental results indicate that the properties of ZnO nanorods such as the diameter

density and distance could be adjusted by controlling the NH

4

NO

3

concentration in the electrolyte. The use of NH

4

NO

3

in the solution leads to an increase of the Al/Zn weight ratio in the ZnO nanorods. By controlling the NH

4

NO

3

concentration in the solution

the optical band gap of ZnO nanorod can be adjusted between 3.723.76 eV

and the optical properties of the nanorod such as the transmission

reflection and absorption can be controlled. The Stokes shift of the Al-doped ZnO nanorods was in the range of 377449 meV

indicating the nonradiative recombination in the nanorods. Therefore the use of NH

4

NO

3

in the electrolytes has successed in enhancing the Al doping in the ZnO nanorods and controlling their optical properties.

关键词

Keywords

references

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