Tunable broadband wavelength-selective enhancement of responsivity in ordered Au-nanorod array-modified PbS photodetectors

2018 ◽  
Vol 6 (7) ◽  
pp. 1767-1773 ◽  
Author(s):  
Bing He Xie ◽  
Guang Tao Fei ◽  
Shao Hui Xu ◽  
Xu Dong Gao ◽  
Jun Xi Zhang ◽  
...  
Keyword(s):  
Nanorod Array ◽  
Infrared Region ◽  
Nanorod Arrays ◽  
Selective Enhancement ◽  
High Wavelength

A PbS-based photodetector integrated with ordered Au-nanorod arrays exhibited high wavelength-selective enhancement in the visible and infrared region.

Facile Synthesis of a Porous ZnO Nanorod Array with Enhanced Photocatalysis for Photoelectrochemical Water Splitting Application

2020 ◽  
Vol 20 (6) ◽  
pp. 3512-3518
Author(s):  
Saleh Khan ◽  
Xiao-He Liu ◽  
Xi Jiang ◽  
Qing-Yun Chen
Keyword(s):  
Annealing Temperature ◽  
Zno Nanorods ◽  
Nanorod Array ◽  
Photocurrent Density ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Irradiation Intensity ◽  
Heat Treated ◽  
Positive Effect

Highly efficient and effective porous ZnO nanorod arrays were fabricated by annealing ZnO nanorod arrays grown on a substrate using a simple hydrothermal method. The annealing had a positive effect on the nanorod morphology, structure and optical properties. The porosity was closely related to the annealing temperature. After heating at 450 °C, pores appeared on the nanorods. It was demonstrated that the porosity could be exploited to improve the visible light absorption of ZnO and reduce the bandgap from 3.11 eV to 2.99 eV. A combination of improved charge separation and transport of the heat-treated ZnO thus led to an increase in the photoelectrochemical properties. At an irradiation intensity of 100 mW/cm−2, the photocurrent density of the porous nanorod array was approximately 1.3 mA cm−2 at 1.2 V versus Ag/AgCl, which was five times higher than that of the ZnO nanorods. These results revealed the synthesis of promising porous ZnO nanorods for photoelectrochemical applications.

SERS polarization-dependent effects for an ordered 3D plasmonic tilted silver nanorod array

Nanoscale ◽  
2018 ◽  
Vol 10 (17) ◽  
pp. 8106-8114 ◽  
Author(s):  
Renxian Gao ◽  
Yongjun Zhang ◽  
Fan Zhang ◽  
Shuang Guo ◽  
Yaxin Wang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Nanorod Array ◽  
Polarization Dependence ◽  
Nanorod Arrays ◽  
Simulation Data ◽  
Hexagonal Close Packed

Hexagonal close-packed tilted Ag nanorod arrays that exhibit excellent uniformity and reproducibility were prepared. The polarization dependence of SERS of nanorod array is fundamentally explained by integrating the experimental and theoretical numerical simulation data.

TiO2/graphene/NiFe-layered double hydroxide nanorod array photoanodes for efficient photoelectrochemical water splitting

2016 ◽  
Vol 9 (8) ◽  
pp. 2633-2643 ◽  
Author(s):  
Fanyu Ning ◽  
Mingfei Shao ◽  
Simin Xu ◽  
Yi Fu ◽  
Ruikang Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Water Oxidation ◽  
Charge Separation ◽  
Nanorod Array ◽  
Photoelectrochemical Water Splitting ◽  
Nanorod Arrays ◽  
Highly Efficient ◽  
Oxidation Efficiency ◽  
Double Hydroxide

TiO2/graphene/NiFe-layered double hydroxide nanorod arrays were fabricated as highly efficient photoanodes for photoelectrochemical water splitting with simultaneously enhanced charge separation and water oxidation efficiency.

Fabrication of Nanorod Arrays for Organic Solar Cell Applications

2004 ◽  
Vol 836 ◽  
Author(s):  
Susan Huang ◽  
Harry Efstathiadis ◽  
Pradeep Haldar ◽  
Hee-Gyoun Lee
Keyword(s):  
Solar Cell ◽  
Organic Solar Cells ◽  
Indium Tin Oxide ◽  
Ion Beam ◽  
Sulfate Solution ◽  
Nanorod Array ◽  
Metal Foil ◽  
Nanorod Arrays ◽  
Copper Sulfate Solution ◽  
Copper Nanorods

ABSTRACTWe report on a novel use of nanorod arrays for organic based solar cell devices. A metal foil with copper nanorods attached to the surface was developed by electrodepositing copper from a copper sulfate solution into an anodic alumina oxide (AAO) template that had been coated with a metal on one side. The AAO membrane was dissolved in NaOH leaving behind an aligned array of copper nanorods. This nanorod array was evaluated to explore the possibility of increasing the power conversion efficiency of organic solar cells. Nanorod array characteristics were investigated by focus ion beam, scanning electron microscopy, and x-ray diffraction spectroscopy. A solar cell device was made by applying a polymer layer of poly(2-methoxy-5-(3', 7'-dimethyloctyloxy)-1, 4-phenylene-vinylene) (MDMO-PPV) mixed with 6, 6 phentl-C61-butyl acid-methylester (PCBM) onto the copper nanorod array and sandwiching it with a film of poly(3, 4-ethylenedioxythiophene): poly(styrene-sulfonate) (PEDOT:PSS) applied onto a indium tin oxide coated glass substrate.

Guided-mode resonance and field enhancement in semiconductor nanorod arrays

2015 ◽  
Vol 1728 ◽  
Author(s):  
W. X. Yu ◽  
Y. Yi
Keyword(s):  
Field Enhancement ◽  
Nanorod Array ◽  
Optical Signal ◽  
Future Application ◽  
Nanorod Arrays ◽  
Resonance Modes ◽  
Guided Mode ◽  
Raman Enhancement ◽  
Guided Mode Resonance ◽  
Em Field

ABSTRACTGuided mode resonance was numerically demonstrated in the tapered silicon nitride nanorod arrays on glass substrate. Finite difference time domain technique was employed to investigate the detailed light-matter interaction dynamics and the generation of resonance at femtoseconds. Enhanced electromagnetic (EM) field intensity with enhancement factor of 200∼250 could be achieved. This highly concentrated electromagnetic field could be extended to the nanorod array tips and substrate for higher order resonance modes, which allows future application of this transverse propagating field in optical signal amplification, like fluorescence or Raman enhancement.

Template-directed synthesis of pyrite (FeS2) nanorod arrays with an enhanced photoresponse

2014 ◽  
Vol 2 (25) ◽  
pp. 9496-9505 ◽  
Author(s):  
Mudan Wang ◽  
Chengcheng Xing ◽  
Ke Cao ◽  
Lei Zhang ◽  
Jiabin Liu ◽  
...  
Keyword(s):  
Specific Area ◽  
Nanorod Array ◽  
Nanotube Arrays ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Photovoltaic Properties ◽  
Transport Pathways ◽  
Directed Synthesis ◽  
Array Structure ◽  
High Specific Area

Well-aligned ZnO nanorod arrays were used as templates to produce Fe(OH)3nanotube arrays. The as-grown Fe(OH)3nanotube arrays were then used as templates to obtain an FeS2nanorod array. The FeS2nanorod arrays had much better photovoltaic properties than the FeS2nanoparticles due to the high specific area, direct transport pathways and enhanced light harvesting of the nanorod array structure.

All-optical, polarization-insensitive light tuning properties in silver nanorod arrays covered with photoresponsive liquid crystals

2015 ◽  
Vol 17 (20) ◽  
pp. 13223-13227 ◽  
Author(s):  
Guangyuan Si ◽  
Eunice S. P. Leong ◽  
Xiaoxiao Jiang ◽  
Jiangtao Lv ◽  
Jiao Lin ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nanorod Array ◽  
Optical Polarization ◽  
Nanorod Arrays ◽  
All Optical ◽  
Homeotropic Alignment ◽  
Polarization Insensitive

Silver nanorod array enabled homeotropic alignment of photoresponsive liquid crystals and polarization-insensitive optical tuning.

Optimizing the packing density of TiO2 nanorod arrays for enhanced light harvesting by a light trapping effect and its photocatalytic decomposition of gaseous benzene

CrystEngComm ◽  
2015 ◽  
Vol 17 (5) ◽  
pp. 1151-1158 ◽  
Author(s):  
Xiaoxia Wang ◽  
Yadan Xiao ◽  
Dawen Zeng ◽  
Changsheng Xie
Keyword(s):  
Tin Oxide ◽  
Light Trapping ◽  
Hydrothermal Process ◽  
Nanorod Array ◽  
Photocatalytic Decomposition ◽  
Nanorod Arrays ◽  
Trapping Effect ◽  
Tio2 Nanorod Arrays ◽  
Oxide Substrates ◽  
Gaseous Benzene

A single-crystalline TiO2 nanorod array with a preferred [002] axial orientation was grown on transparent conductive fluorine-doped tin oxide substrates by a hydrothermal process.

scholarly journals Plasmon Enhanced Second Harmonic Generation from ZnO Nanofilms on Vertical Au Nanorod Arrays

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2597
Author(s):  
Qiang Ma ◽  
Chengda Pan ◽  
Yingxian Xue ◽  
Zhiyun Fang ◽  
Shiyu Zhang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic ◽  
Nanorod Array ◽  
Gold Nanorod ◽  
Nanorod Arrays ◽  
Plasmonic Enhancement ◽  
Vertically Aligned

Vertically aligned gold nanorod arrays have attracted much attention for their fascinating optical properties. Different from longitudinal surface plasmon wavelength (LSPW) and edge-to-edge spacing of gold nanorods, the role of gold nanorod diameter in plasmonic enhancement ability of vertical gold nanorod arrays has rarely been explored. In this work, we selected gold nanorods with similar LSPW but two different diameters (22 and 41 nm), the optical properties of which are dominated by absorption and scattering cross sections, respectively. The vertically aligned arrays of these gold nanorods formed by evaporation self-assembly are coupled with nonlinear ZnO nanocrystal films spin-coated on their surfaces. It was found that the gold nanorod array with a larger diameter can enhance the second harmonic generation (SHG) of ZnO nanofilm by a factor of 27.0, while it is about 7.3 for the smaller gold nanorod array. Theoretical simulations indicate that such stronger enhancement of the larger vertical gold nanorod array compared with the smaller one is due to its stronger scattering ability and greater extent of near-field enhancement at SHG fundamental wavelength. Our work shows that the diameter of gold nanorods is also an important factor to be considered in realizing strong plasmon enhancement of vertically aligned gold nanorod arrays.

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