Synthesis of Quaternary Semiconductor Nanocrystals with Tunable Band Gaps

2009 ◽  
Vol 21 (12) ◽  
pp. 2489-2493 ◽  
Author(s):  
Daocheng Pan ◽  
Xiaolei Wang ◽  
Z. Hong Zhou ◽  
Wei Chen ◽  
Chuanlai Xu ◽  
...  
Keyword(s):  
Semiconductor Nanocrystals ◽  
Band Gaps

ChemInform Abstract: Alloyed Semiconductor Nanocrystals with Broad Tunable Band Gaps.

ChemInform ◽  
2009 ◽  
Vol 40 (40) ◽  
Author(s):  
Daocheng Pan ◽  
Ding Weng ◽  
Xiaolei Wang ◽  
Qiangfeng Xiao ◽  
Wei Chen ◽  
...  
Keyword(s):  
Semiconductor Nanocrystals ◽  
Band Gaps ◽  
Alloyed Semiconductor

Alloyed semiconductor nanocrystals with broad tunable band gaps

2009 ◽  
pp. 4221 ◽  
Author(s):  
Daocheng Pan ◽  
Ding Weng ◽  
Xiaolei Wang ◽  
Qiangfeng Xiao ◽  
Wei Chen ◽  
...  
Keyword(s):  
Semiconductor Nanocrystals ◽  
Band Gaps ◽  
Alloyed Semiconductor

Comparative cradle-to-gate energy assessment of indium phosphide and cadmium selenide quantum dot displays

2017 ◽  
Vol 4 (1) ◽  
pp. 244-254 ◽  
Author(s):  
Shauhrat S. Chopra ◽  
Thomas L. Theis
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Indium Phosphide ◽  
Cadmium Selenide ◽  
Semiconductor Nanocrystals ◽  
Band Gaps ◽  
Luminescence Properties ◽  
Energy Assessment ◽  
Cradle To Gate

Quantum dots (QDs) are semiconductor nanocrystals (2–10 nm) with tunable band gaps and desirable luminescence properties.

Phonon Band Gaps

1997 ◽  
Vol 7 (3) ◽  
pp. 509-519 ◽  
Author(s):  
R. M. Hornreich ◽  
M. Kugler ◽  
S. Shtrikman ◽  
C. Sommers
Keyword(s):  
Band Gaps ◽  
Phonon Band

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.

Flexural Wave Band Gaps in Phononic Crystal Thick Plates with Defects

2019 ◽  
Author(s):  
Edson Jansen Pedrosa de Miranda Junior ◽  
Jose Maria Campos dos Santos
Keyword(s):  
Phononic Crystal ◽  
Band Gaps ◽  
Flexural Wave ◽  
Wave Band ◽  
Thick Plates

Spins in Semiconductor Nanocrystals

Priroda ◽  
2018 ◽  
pp. 22-31
Author(s):  
A. Rodina ◽  
◽  
D. Yakovlev ◽  
Keyword(s):  
Semiconductor Nanocrystals

Simulating Photonic Band Gaps in Crystals

2007 ◽  
Author(s):  
Daniel H. Kodan ◽  
Peter W. Chung
Keyword(s):  
Band Gaps ◽  
Photonic Band Gaps ◽  
Photonic Band
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