Enhanced Dielectric Screening and Photoluminescence from Nanopillar-Strained MoS2 Nanosheets: Implications for Strain Funneling in Optoelectronic Applications

2021 ◽  
Author(s):  
Mounika Vutukuru ◽  
Hossein Ardekani ◽  
Zhuofa Chen ◽  
Ryan L. Wilmington ◽  
Kenan Gundogdu ◽  
...  
Keyword(s):  
Mos2 Nanosheets ◽  
Dielectric Screening ◽  
Optoelectronic Applications

Tuning the Photoluminescence of Few-Layer MoS2 Nanosheets by Mechanical Nanostamping for Broadband Optoelectronic Applications

2020 ◽  
Vol 3 (10) ◽  
pp. 10333-10341
Author(s):  
Ghada Dushaq ◽  
Bruna Paredes ◽  
Jin-You Lu ◽  
Matteo Chiesa ◽  
Mahmoud Rasras
Keyword(s):  
Mos2 Nanosheets ◽  
Optoelectronic Applications

Dibenzochrysene Enables Tightly Controlled Docking and Stabilizes Photoexcited States in Dual-Pore Covalent Organic Frameworks

2019 ◽  
Author(s):  
Torben Sick ◽  
Niklas Keller ◽  
Nicolai Bach ◽  
Andreas Koszalkowski ◽  
Julian Rotter ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Photophysical Properties ◽  
Visible Spectrum ◽  
Large Family ◽  
Building Blocks ◽  
Band Gaps ◽  
Docking Site ◽  
Covalent Organic Frameworks ◽  
Connected Node ◽  
Optoelectronic Applications

Covalent organic frameworks (COFs), consisting of covalently connected organic building units, combine attractive features such as crystallinity, open porosity and widely tunable physical properties. For optoelectronic applications, the incorporation of heteroatoms into a 2D COF has the potential to yield desired photophysical properties such as lower band gaps, but can also cause lateral offsets of adjacent layers. Here, we introduce dibenzo[g,p]chrysene (DBC) as a novel building block for the synthesis of highly crystalline and porous 2D dual-pore COFs showing interesting properties for optoelectronic applications. The newly synthesized terephthalaldehyde (TA), biphenyl (Biph), and thienothiophene (TT) DBC-COFs combine conjugation in the a,b-plane with a tight packing of adjacent layers guided through the molecular DBC node serving a specific docking site for successive layers. The resulting DBC-COFs exhibit a hexagonal dual-pore kagome geometry, which is comparable to COFs containing another molecular docking site, namely 4,4′,4″,4‴-(ethylene-1,1,2,2-tetrayl)-tetraaniline (ETTA). In this context, the respective interlayer distances decrease from about 4.60 Å in ETTA-COFs to about 3.6 Å in DBC-COFs, leading to well-defined hexagonally faceted single crystals sized about 50-100 nm. The TT DBC-COFs feature broad light absorption covering large parts of the visible spectrum, while Biph DBC-COF shows extraordinary excited state lifetimes exceeding 10 ns. In combination with the large number of recently developed linear conjugated building blocks, the new DBC tetra-connected node is expected to enable the synthesis of a large family of strongly p-stacked, highly ordered 2D COFs with promising optoelectronic properties.

Electronic and Optoelectronic Applications Based on ReS 2

2019 ◽  
Vol 13 (6) ◽  
pp. 1800658 ◽  
Author(s):  
Yan Xiong ◽  
HuaWei Chen ◽  
David Wei Zhang ◽  
Peng Zhou
Keyword(s):  
Optoelectronic Applications

scholarly journals Biological interactions of biocompatible and water-dispersed MoS2 nanosheets with bacteria and human cells

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Jasneet Kaur ◽  
Manjot Singh ◽  
Carmela Dell‘Aversana ◽  
Rosaria Benedetti ◽  
Paola Giardina ◽  
...  
Keyword(s):  
Human Cells ◽  
Biological Interactions ◽  
Mos2 Nanosheets
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