scholarly journals Phonons spreading from laser-heated gold nanoparticle array accelerate diffusion of excitons in an underlying polythiophene thin film

2017 ◽  
Vol 19 (16) ◽  
pp. 10562-10570 ◽  
Author(s):  
David Rais ◽  
Miroslav Menšík ◽  
Bartosz Paruzel ◽  
Dharmalingam Kurunthu ◽  
Jiří Pfleger
Keyword(s):  
Thin Film ◽  
Gold Nanoparticle ◽  
Au Nanoparticles ◽  
Transient Absorption ◽  
Nanoparticle Array ◽  
Absorption Experiment ◽  
Exciton Annihilation ◽  
Laser Heated

Phonons emitted from laser-heated plasmonic Au nanoparticles caused an increased rate of mutual exciton annihilation observed in a transient absorption experiment.

One-step integration of a multiple-morphology gold nanoparticle array on a TiO2filmviaa facile sonochemical method for highly efficient organic photovoltaics

2018 ◽  
Vol 6 (18) ◽  
pp. 8419-8429 ◽  
Author(s):  
Weijing Shao ◽  
Zhiqiang Liang ◽  
Tianfu Guan ◽  
Jianmei Chen ◽  
Zhifang Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Absorption Band ◽  
Gold Nanoparticle ◽  
Organic Photovoltaics ◽  
Device Performance ◽  
Sonochemical Method ◽  
Nanoparticle Array ◽  
Au Nps ◽  
Highly Efficient ◽  
One Step

Well-dispersed Au NPs arrays with multiple morphology are integrated on a TiO2thin filmviaa facile sonochemical approach, which exhibit a broadened absorption band, and enable a noticeable enhancement in device performance of organic photovoltaics.

Gold nanoparticle array formation on dimpled Ta templates using pulsed laser-induced thin film dewetting

2015 ◽  
Vol 17 (16) ◽  
pp. 11062-11069 ◽  
Author(s):  
Hany A. El-Sayed ◽  
Corie A. Horwood ◽  
Ebenezer Owusu-Ansah ◽  
Yujun J. Shi ◽  
Viola I. Birss
Keyword(s):  
Thin Film ◽  
Gold Nanoparticle ◽  
Pulsed Laser ◽  
Au Nanoparticle ◽  
Nanoparticle Array

Au nanoparticle array formed on a dimpled Ta template using laser-induced thin film dewetting.

scholarly journals Plasmon-Enhanced Sunlight Harvesting in Thin-Film Solar Cell by Randomly Distributed Nanoparticle Array

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1380
Author(s):  
Marwa M. Tharwat ◽  
Ashwag Almalki ◽  
Amr M. Mahros
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Near Infrared ◽  
Structural Parameters ◽  
Visible Region ◽  
Nanoparticle Array ◽  
Solar Energy Harvesting ◽  
Infra Red ◽  
Crucial Parameter

In this paper, a randomly distributed plasmonic aluminum nanoparticle array is introduced on the top surface of conventional GaAs thin-film solar cells to improve sunlight harvesting. The performance of such photovoltaic structures is determined through monitoring the modification of its absorbance due to changing its structural parameters. A single Al nanoparticle array is integrated over the antireflective layer to boost the absorption spectra in both visible and near-infra-red regimes. Furthermore, the planar density of the plasmonic layer is presented as a crucial parameter in studying and investigating the performance of the solar cells. Then, we have introduced a double Al nanoparticle array as an imperfection from the regular uniform single array as it has different size particles and various spatial distributions. The comparison of performances was established using the enhancement percentage in the absorption. The findings illustrate that the structural parameters of the reported solar cell, especially the planar density of the plasmonic layer, have significant impacts on tuning solar energy harvesting. Additionally, increasing the plasmonic planar density enhances the absorption in the visible region. On the other hand, the absorption in the near-infrared regime becomes worse, and vice versa.

Transient Temperature During the Vaporization of Liquid on a Pulsed Laser-Heated Solid Surface

1996 ◽  
Vol 118 (3) ◽  
pp. 702-708 ◽  
Author(s):  
H. K. Park ◽  
X. Zhang ◽  
C. P. Grigoropoulos ◽  
C. C. Poon ◽  
A. C. Tam
Keyword(s):  
Thin Film ◽  
Solid Surface ◽  
Elevated Temperatures ◽  
Bubble Nucleation ◽  
Transient Temperature ◽  
Specular Reflectance ◽  
Transient Temperature Field ◽  
Excimer Laser Pulse ◽  
Nanosecond Time Resolution ◽  
Laser Heated

The thermodynamics of the rapid vaporization of a liquid on a solid surface heated by an excimer laser pulse is studied experimentally. The transient temperature field is measured by monitoring the photothermal reflectance of an embedded thin film in nanosecond time resolution. The transient reflectivity is calibrated by considering a temperature gradient across the sample based on the static measurements of the thin film optical properties at elevated temperatures. The dynamics of bubble nucleation, growth, and collapse is detected by probing the optical specular reflectance. The metastability behavior of the liquid and the criterion for the onset of liquid–vapor phase transition in nanosecond time scale are obtained quantitatively for the first time.

scholarly journals Improved efficiency of thin film a-Si:H solar cells with Au nanoparticles

2013 ◽  
Author(s):  
Kazi Islam ◽  
Aaesha Alnuaimi ◽  
Ali Kemal Okyay ◽  
Ammar Nayfeh
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Au Nanoparticles

scholarly journals Electron thermalization and relaxation in laser-heated nickel by few-femtosecond core-level transient absorption spectroscopy

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
Hung-Tzu Chang ◽  
Alexander Guggenmos ◽  
Scott K. Cushing ◽  
Yang Cui ◽  
Naseem Ud Din ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Core Level ◽  
Transient Absorption Spectroscopy ◽  
Laser Heated

scholarly journals Gold-Nanoparticle Sensors: Visualizing Human Telomerase Activity with Primer-Modified Au Nanoparticles (Small 2/2012)

Small ◽  
2012 ◽  
Vol 8 (2) ◽  
pp. 166-166
Author(s):  
Jiasi Wang ◽  
Li Wu ◽  
Jinsong Ren ◽  
Xiaogang Qu
Keyword(s):  
Gold Nanoparticle ◽  
Au Nanoparticles ◽  
Telomerase Activity ◽  
Human Telomerase

scholarly journals Sensitive and Reproducible Gold SERS Sensor Based on Interference Lithography and Electrophoretic Deposition

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4076 ◽  
Author(s):  
June Hwang ◽  
Minyang Yang
Keyword(s):  
Gold Nanoparticle ◽  
Electrophoretic Deposition ◽  
Large Scale ◽  
Surface Enhanced Raman Spectroscopy ◽  
Localized Surface Plasmon ◽  
Interference Lithography ◽  
Metal Nanostructures ◽  
Nanoparticle Array ◽  
Laser Ablation In Liquid ◽  
Label Free Detection

Surface-enhanced Raman spectroscopy (SERS) is a promising analytical tool due to its label-free detection ability and superior sensitivity, which enable the detection of single molecules. Since its sensitivity is highly dependent on localized surface plasmon resonance, various methods have been applied for electric field-enhanced metal nanostructures. Despite the intensive research on practical applications of SERS, fabricating a sensitive and reproducible SERS sensor using a simple and low-cost process remains a challenge. Here, we report a simple strategy to produce a large-scale gold nanoparticle array based on laser interference lithography and the electrophoretic deposition of gold nanoparticles, generated through a pulsed laser ablation in liquid process. The fabricated gold nanoparticle array produced a sensitive, reproducible SERS signal, which allowed Rhodamine 6G to be detected at a concentration as low as 10−8 M, with an enhancement factor of 1.25 × 105. This advantageous fabrication strategy is expected to enable practical SERS applications.

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