检索结果-南通市图书馆

Experimental Investigation of the Effect of Graphene Nanosheets on the Optical-Electrical Properties of Vanadium Oxide Nanocomposites

引用

Graphene 2016年第1期5卷 14-24页

作者： Issam Derkaoui Mohammed Khenfouch Ibrahim Elmokri Sabata Jonas Moloi Bakang Moses Mothudi mokhotjwa simon dhlamini Malik Maaza Izeddine Zorkani Anouar Jorio Group of Nanomaterials and Renewable Energies Laboratory of Solid State Physics Faculty of Sciences Dharel Mahraz University Sidi Mohamed Ben Abdellah Atlas Fez Morocco UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology College of Graduate Studies University of South Africa Pretoria South Africa Nanosciences African Network (NANOAFNET) iThemba LABS-National Research Foundation Somerset West Western Cape South Africa Physics Department College of Science Engineering and Technology Science Campus University of South Africa Johannesburg South Africa

We report the structural, optical and electrical properties of Graphene-Vanadium oxide nanoparticles (rGO/VO-NPs) nanocomposites prepared via a hydrothermal method on glass substrates. The samples have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (ATR-FTIR), Raman spectroscopy, ultraviolet-visible spectra (Uv-Vis) (absorbance/reflectance) and electrical conductivity. Our results are revealing a remarkable effect on the morphology and structure of vanadium oxide nanoparticles. Hence, the graphene layers improved their electrical conductivity and highly influenced their optical properties. Therefore, the obtained results may lead to better performance for a large field of applications.

关键词： Vanadium Oxide Graphene Optical Properties Electrical Conductivity Nanorods

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

P3HT： PCBM Based Solar Cells： A Short Review Focusing on ZnO Nanoparticles Buffer Layer, Post-Fabrication Annealing and an Inverted Geometry

引用

材料科学与工程（中英文B版） 2015年第1期5卷 12-35页

作者： Hendrik C.Swart Odireleng M. Ntwaeaborwa Pontsho S. Mbule mokhotjwa S. dhlamini Bakang B.Mothudi Department of Physics University of the Free State Bloemfontein 339 9300 South Africa Department of Physics University of South Africa Pretoria 392 0003 South Africa

Today, BHJ (bulk heterojunction) OSCs (organic solar cells) dominate modern age research in renewable solar energy. In recent developments, the ultimate goal is to improve the general performance of the BHJ-OSCs to enable them to compete on an equal footing basis with conventional silicon photovoltaic cells. In this presentation, we review the fundamental parameters that have been reported to improve the general performance of the BHJ-OSC devices. These parameters include, among other things, the use of ZnO nanoparticles ETL (electron transport layer) inserted between the top electrode and the photoactive layer, annealing procedure and device geometry. The BHJ-OSC devices constructed in this study comprised of successive (bottom up) layers of (3,4ethylenedioxythiophene): poly (styrenesulfonate) or PEDOT: PSS, a blend of poly (3-hexylthiophene) or P3HT and [6,6]-phenyl butyric acid methyl ester or PCBM, zinc oxide or ZnO nanoparticles and aluminum (Al) metal top electrode. These layers were deposited on ITO (indium tin oxide) coated glass substrates. The device construction was also inverted (top down) in order to evaluate the effect of inversion on the power conversion efficiency and the general performance of the devices. The devices were annealed at 155 oC either before (pre-annealed) or after (post-annealed) the deposition of the Al top electrode. Post-annealed devices showed improved PV (photovoltaic) characteristics when compared to pre-annealed devices. Furthermore, we discuss the performance of inverted geometry in comparison to ZnO nanoparticles and nanoflakes as buffer layers.

关键词：有机太阳能电池 ZnO纳米粒子 ZnO缓冲层几何形状预退火后期制作氧化锌纳米颗粒 3-己基噻吩

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：