Tunable electron and hole injection channels at plasmonic Al-TiO2 interfaces

Nanoscale ◽  
2021 ◽  
Author(s):  
Jie Ma ◽  
Xindan Zhang ◽  
Shiwu Gao
Keyword(s):  
Spatial Separation ◽  
Metallic Nanostructures ◽  
Hole Injection ◽  
Hot Electron ◽  
Electron Hole ◽  
Metallic Nanostructure ◽  
Nonradiative Decay

Metallic nanostructures can strongly absorb light through their plasmon excitations, whose nonradiative decay generates hot electron-hole pairs. When the metallic nanostructure is interfaced with a semiconductor, the spatial separation of...

scholarly journals Spatial Separation of Plasmonic Hot Electron Generation and a Hydrodehalogenation Reaction Center Using a DNA Wire

2021 ◽  
Author(s):  
Sergio Kogikoski Junior ◽  
Anushree Dutta ◽  
Ilko Bald
Keyword(s):  
Spatial Separation ◽  
Decomposition Reaction ◽  
Charge Carriers ◽  
Hot Electrons ◽  
Hot Electron ◽  
Plasmonic Nanoparticle ◽  
Double Stranded Dna ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

<p>Using hot charge carriers far from a plasmonic nanoparticle surface is very attractive for many applications in catalysis and nanomedicine, and will lead to a better understanding of plasmon-induced processes, such as hot charge carrier or heat driven chemical reactions. Herein we show that DNA is able to transfer hot electrons generated by a silver nanoparticle over several nanometers to drive a chemical reaction in a molecule non-adsorbed on the surface. For this we use 8-bromo-adenosine introduced in different positions within a double stranded DNA oligonucleotide. The DNA is also used to assemble the nanoparticles into superlattices enabling the use of surface enhanced Raman scattering to track the decomposition reaction. To prove the DNA mediated transfer, the probe molecule was insulated from the charge carriers source, which hindered the reaction. The results indicate that DNA can provide an attractive platform to study the transfer of hot electrons, leading to the future development of more advanced plasmonic catalysts. </p>

Characterizing local metallic bonding variation induced by external perturbation

2020 ◽  
Vol 22 (4) ◽  
pp. 2372-2378 ◽  
Author(s):  
Hongwei Wang ◽  
Jon Fuller ◽  
Peng Chen ◽  
Sergey I. Morozov ◽  
Qi An
Keyword(s):  
Density Gradient ◽  
External Perturbation ◽  
Hole Injection ◽  
Electron Hole ◽  
Fcc Metals ◽  
Reduced Density Gradient ◽  
Metallic Bonding ◽  
Reduced Density

The reduced density gradient analyses on metallic bonding indicate that FCC metals can become more flexible/stronger with the electron/hole injection.

Optical Performance Characteristics of Light-Emitting Diodes Designed with Dip-Shaped InGaN/GaN Quantum well Structures

2013 ◽  
Vol 328 ◽  
pp. 845-849
Author(s):  
Seong Jun Kim ◽  
Chel Jong Choi ◽  
Hyun Soo Kim
Keyword(s):  
Quantum Well ◽  
Light Emitting Diodes ◽  
Internal Quantum Efficiency ◽  
Spatial Separation ◽  
Wave Functions ◽  
Radiative Recombination Rate ◽  
Electron Hole ◽  
Light Emitting ◽  
Quantum Well Structures ◽  
Lower Temperature

A dip-shaped InGaN/GaN quantum well (QW) structure was computed to design efficient light-emitting diodes (LEDs). The advanced LEDs designed with the dip-shaped QW structures exhibited higher internal quantum efficiency by 26 % and the lower temperature-driven efficiency droop as compared to the reference LEDs. This could be due to the enhanced radiative recombination rate in the QW active region, which is associated with the reduced spatial separation of electron-hole wave functions.

Hot electron–hole plasma dynamics and amplified spontaneous emission in ZnTe nanowires

Nanoscale ◽  
2017 ◽  
Vol 9 (40) ◽  
pp. 15612-15621 ◽  
Author(s):  
Shaomin Peng ◽  
Guichuan Xing ◽  
Zikang Tang
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Hot Electron ◽  
Electron Hole ◽  
High Quality ◽  
Plasma Dynamics ◽  
Hole Plasma ◽  
Electron Hole Plasma

Electron–hole (e–h) plasma dynamics and electron–phonon interactions in high-quality ZnTe nanowires (NWs) are systematically investigated.

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