Hot Electron Generation in Silicon Micropyramids Covered with Nanometer-Thick Gold Films for Near-Infrared Photodetectors

2020 ◽  
Vol 3 (1) ◽  
pp. 149-155 ◽  
Author(s):  
Yusheng Zhai ◽  
Yupei Li ◽  
Jitao Ji ◽  
Zhipeng Wu ◽  
Qilong Wang
Keyword(s):  
Near Infrared ◽  
Infrared Photodetectors ◽  
Gold Films ◽  
Hot Electron ◽  
Electron Generation ◽  
Thick Gold

scholarly journals Nonmetallic plasmonic heterostructures with multi-synergies on boosting hot electron generation for CO2 photoreduction

2021 ◽  
Author(s):  
Zaizhu Lou ◽  
Changhai Lu ◽  
Xinru Li ◽  
Juan Li ◽  
Liang Mao ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Near Infrared ◽  
Photothermal Effect ◽  
Hot Electron ◽  
Hot Carriers ◽  
Tungsten Oxides ◽  
Pyroelectric Effect ◽  
Electron Generation ◽  
Nir Light ◽  
Physical Effects

Abstract Constructing multi-physical effects on semiconductors is one new horizon to develop next-generation photocatalysts. Here we use pyroelectric black phosphorus (BP) to couple with nonmetallic plasmonic tungsten oxides (WO) forming a BP/WO heterostructures as photocatalysts to convert CO2 for CO under visible-near-infrared (Vis-NIR) light irradiation. Nonmetallic plasmonic heterostructures exhibit 26.1 µmol h− 1 g− 1 CO generation with a selectivity of 98 %, and which is 7- and 17-fold higher than those of plasmonic WO and pyroelectric BP, respectively. The interface P-O-W bonds in heterostructures are constructed to work as channels for electron transfer from BP to plasmonic WO. Moreover, the photothermal energy generated by SPR excitation on WO can make the temperature of heterostructures rapidly increasing from 24 to 86 oC in 10 min, triggering the pyroelectric BP for carriers to promote electron transfer. Multi-physical effects including plasmonic hot carriers and photothermal effect of WO, intrinsic band excitation and pyroelectric effect of BP and W-O-P bonds play synergistic roles on boosting hot electron generation for CO2 reduction. This work provides clear proofs to demonstrate that constructing multi-physical effects on semiconductors is one useful strategy to promote NIR-harvesting for artificial photosynthesis.

Enhancing hot electron generation and injection in the near infrared via rational design and controlled synthesis of TiO2–gold nanostructures

2019 ◽  
Vol 214 ◽  
pp. 341-351 ◽  
Author(s):  
Supriya Atta ◽  
Fuat E. Celik ◽  
Laura Fabris
Keyword(s):  
Rational Design ◽  
Near Infrared ◽  
Gold Nanorod ◽  
Gold Nanostructures ◽  
Design Parameters ◽  
Controlled Synthesis ◽  
Hot Electron ◽  
Electron Generation ◽  
Gold Nanostar ◽  
Important Design

We synthesize TiO2-coated gold nanostar- and gold nanorod-based photocatalysts and identify the most important design parameters for the optimization of hot electron-based photocatalysts.

High-performance near-infrared photodetectors based on C3N quantum dots integrated with single-crystal graphene

2021 ◽  
Author(s):  
Yun Zhao ◽  
Xiaoqiang Feng ◽  
Menghan Zhao ◽  
Xiaohu Zheng ◽  
Zhiduo Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Single Crystal ◽  
High Performance ◽  
Near Infrared ◽  
Fast Response ◽  
Local Electric Field ◽  
Infrared Photodetectors ◽  
Photocurrent Response

Employing C3N QD-integrated single-crystal graphene, photodetectors exhibited a distinct photocurrent response at 1550 nm. The photocurrent map revealed that the fast response derive from C3N QDs that enhanced the local electric field near graphene.

Germanium on insulator near-infrared photodetectors fabricated by layer transfer

2010 ◽  
Vol 518 (9) ◽  
pp. 2501-2504 ◽  
Author(s):  
V. Sorianello ◽  
A. De Iacovo ◽  
L. Colace ◽  
G. Assanto ◽  
D. Fulgoni ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Photodetectors ◽  
Layer Transfer

scholarly journals Au@HgxCd1-xTe core@shell nanorods by sequential aqueous cation exchange for near-infrared photodetectors

Nano Energy ◽  
2019 ◽  
Vol 57 ◽  
pp. 57-65 ◽  
Author(s):  
Xinyuan Li ◽  
Muhammad Ahsan Iqbal ◽  
Meng Xu ◽  
Yi-Chi Wang ◽  
Hongzhi Wang ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Near Infrared ◽  
Infrared Photodetectors ◽  
Core Shell

Visible to near-infrared photodetectors based on MoS2vertical Schottky junctions

2017 ◽  
Vol 28 (48) ◽  
pp. 484002 ◽  
Author(s):  
Fan Gong ◽  
Hehai Fang ◽  
Peng Wang ◽  
Meng Su ◽  
Qing Li ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Photodetectors ◽  
Schottky Junctions

Numerical Study of Near-Infrared Photodetectors with Surface-Plasmon Antenna for Optical Communication

2008 ◽  
Vol 47 (4) ◽  
pp. 2921-2923 ◽  
Author(s):  
Daisuke Okamoto ◽  
Junichi Fujikata ◽  
Kenichi Nishi ◽  
Keishi Ohashi
Keyword(s):  
Surface Plasmon ◽  
Optical Communication ◽  
Near Infrared ◽  
Numerical Study ◽  
Infrared Photodetectors

Morphology and charge recombination effects on the performance of near-infrared photodetectors based on conjugated polymers

2019 ◽  
Vol 64 ◽  
pp. 274-279 ◽  
Author(s):  
Dae Woon Lee ◽  
Yeongkwon Kang ◽  
Bong Hyun Jo ◽  
Gyeong G. Jeon ◽  
Jaehong Park ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Near Infrared ◽  
Charge Recombination ◽  
Infrared Photodetectors

Boosting Hot-Electron Generation: Exciton Dissociation at the Order–Disorder Interfaces in Polymeric Photocatalysts

2017 ◽  
Vol 139 (6) ◽  
pp. 2468-2473 ◽  
Author(s):  
Hui Wang ◽  
Xianshun Sun ◽  
Dandan Li ◽  
Xiaodong Zhang ◽  
Shichuan Chen ◽  
...  
Keyword(s):  
Hot Electron ◽  
Exciton Dissociation ◽  
Electron Generation
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