Direct Imaging of Light Emission Centers in Two-Dimensional Crystals and Their Luminescence and Photocatalytic Properties

2014 ◽  
Vol 53 (48) ◽  
pp. 13078-13082 ◽  
Author(s):  
Shintaro Ida ◽  
Shota Koga ◽  
Takeshi Daio ◽  
Hidehisa Hagiwara ◽  
Tatsumi Ishihara
Keyword(s):  
Light Emission ◽  
Photocatalytic Properties ◽  
Two Dimensional ◽  
Direct Imaging

Direct Imaging of Light Emission Centers in Two-Dimensional Crystals and Their Luminescence and Photocatalytic Properties

2014 ◽  
Vol 126 (48) ◽  
pp. 13294-13298 ◽  
Author(s):  
Shintaro Ida ◽  
Shota Koga ◽  
Takeshi Daio ◽  
Hidehisa Hagiwara ◽  
Tatsumi Ishihara
Keyword(s):  
Light Emission ◽  
Photocatalytic Properties ◽  
Two Dimensional ◽  
Direct Imaging

scholarly journals Two-dimensional photonic crystals increasing vertical light emission from Si nanocrystal-rich thin layers

2018 ◽  
Vol 9 ◽  
pp. 2287-2296
Author(s):  
Lukáš Ondič ◽  
Marian Varga ◽  
Ivan Pelant ◽  
Alexander Kromka ◽  
Karel Hruška ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Light Emission ◽  
Periodic Structures ◽  
Normal Direction ◽  
Thin Layers ◽  
Two Dimensional ◽  
Lattice Constants ◽  
Leaky Modes ◽  
Si Nanocrystals ◽  
Si Nanocrystal

We have fabricated two-dimensional photonic crystals (PhCs) on the surface of Si nanocrystal-rich SiO2 layers with the goal to maximize the photoluminescence extraction efficiency in the normal direction. The fabricated periodic structures consist of columns ordered into square and hexagonal pattern with lattice constants computed such that the red photoluminescence of Si nanocrystals (SiNCs) could couple to leaky modes of the PhCs and could be efficiently extracted to surrounding air. Samples having different lattice constants and heights of columns were investigated in order to find the configuration with the best performance. Spectral overlap of the leaky modes with the luminescence spectrum of SiNCs was verified experimentally by measuring photonic band diagrams of the leaky modes employing angle-resolved spectroscopy and also theoretically by computing the reflectance spectra. The extraction enhancement within different spatial angles was evaluated by means of micro-photoluminescence spectroscopy. More than 18-fold extraction enhancement was achieved for light propagating in the normal direction and up to 22% increase in overall intensity was obtained at the spatial collection angle of 14°.

scholarly journals Two-Dimensional, Hierarchical Ag-Doped TiO2 Nanocatalysts: Effect of the Metal Oxidation State on the Photocatalytic Properties

ACS Omega ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 2579-2587 ◽  
Author(s):  
Siti Khatijah Md Saad ◽  
Akrajas Ali Umar ◽  
Marjoni Imamora Ali Umar ◽  
Masahiko Tomitori ◽  
Mohd. Yusri Abd. Rahman ◽  
...  
Keyword(s):  
Oxidation State ◽  
Photocatalytic Properties ◽  
Two Dimensional ◽  
Metal Oxidation ◽  
Doped Tio2

Two-dimensional dendritic Ag3PO4 nanostructures and their photocatalytic properties

2012 ◽  
Vol 14 (42) ◽  
pp. 14486 ◽  
Author(s):  
Yingpu Bi ◽  
Hongyan Hu ◽  
Zhengbo Jiao ◽  
Hongchao Yu ◽  
Gongxuan Lu ◽  
...  
Keyword(s):  
Photocatalytic Properties ◽  
Two Dimensional

Broadband white-light emission with a high color rendering index in a two-dimensional organic–inorganic hybrid perovskite

2018 ◽  
Vol 6 (5) ◽  
pp. 1171-1175 ◽  
Author(s):  
Zhenyue Wu ◽  
Chengmin Ji ◽  
Zhihua Sun ◽  
Sasa Wang ◽  
Sangen Zhao ◽  
...  
Keyword(s):  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Two Dimensional ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Color Rendering Index ◽  
Color Rendering

Broadband white-light emission with an ultrahigh CRI of 93 based on an organic–inorganic hybrid 2D corrugated perovskite.

Mechanical, thermal transport, electronic and photocatalytic properties of penta-PdPS, -PdPSe and -PdPTe monolayers explored by first-principles calculations

2021 ◽  
Author(s):  
Bohayra Mortazavi ◽  
Masoud Shahrokhi ◽  
Xiaoying Zhuang ◽  
Alexander V. Shapeev ◽  
Timon Rabczuk
Keyword(s):  
First Principles ◽  
Thermal Transport ◽  
2D Materials ◽  
Layered Materials ◽  
Photocatalytic Properties ◽  
Two Dimensional ◽  
First Principles Calculations

In the latest experimental advances in the field of two-dimensional (2D) materials, penta-PdPS and penta-PdPSe layered materials have been fabricated. In this work, we conduct first-principles calculations to explore the...

Investigation of Chemical Origin of White-Light Emission in Two-Dimensional (C4H9NH3)2PbBr4 via Infrared Nanoscopy

2019 ◽  
Vol 10 (24) ◽  
pp. 7942-7948 ◽  
Author(s):  
Dae Young Park ◽  
Sung-Jin An ◽  
Chanwoo Lee ◽  
Duc Anh Nguyen ◽  
Kang-Nyeoung Lee ◽  
...  
Keyword(s):  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Two Dimensional
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