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244600

Sigma-Aldrich

Cadmium selenide

-325 Mesh particle size, 99.99% trace metals basis, electronic grade

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Empirical Formula (Hill Notation):
CdSe
CAS Number:
Molecular Weight:
191.37
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

grade

electronic grade

Quality Level

assay

99.99% trace metals basis

form

powder

density

5.81 g/mL at 25 °C (lit.)

SMILES string

[Se]=[Cd]

InChI

1S/Cd.Se

InChI key

AQCDIIAORKRFCD-UHFFFAOYSA-N

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This Item
GF19845377202894204307
Cadmium selenide -325 Mesh particle size, 99.99% trace metals basis, electronic grade

244600

Cadmium selenide

Cadmium selenide lump, 15 mm max. lump size, weight 100 g

GF19845377

Cadmium selenide

Cadmium oxide ≥99.99% trace metals basis

202894

Cadmium oxide

Selenium pellets, <5 mm particle size, ≥99.999% trace metals basis

204307

Selenium

form

powder

form

lumps

form

powder

form

pellets

density

5.81 g/mL at 25 °C (lit.)

density

-

density

8.15 g/mL at 25 °C (lit.)

density

4.81 g/mL at 25 °C (lit.)

grade

electronic grade

grade

-

grade

-

grade

-

General description

CdSe crystal can exist in solid hexagonal or cubic structure. CdSe behaves as an n-type semiconductor, with a bandgap of 1.74 eV (300K).1

Application

Dispersions with CdS (Aldrich products 208183, 217921) deposited on glass or Si substrates results in tunable red, yellow, or green fluorescent material.

Packaging

Packaged in glass bottles

signalword

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2 Oral

Storage Class

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges


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Ying Wang et al.
Journal of the American Chemical Society, 125(10), 2830-2831 (2003-03-06)
Indiscriminate adsorption of nanoparticles (NPs) significantly complicates the preparation of mesoscale NP patterns considered as enabling technology for many devices and processes. Instead of selected chemical functionalization of the substrate surface prior to the assembly of nanocolloids, the required optical
Bryan T Spann et al.
Optics express, 21 Suppl 1, A15-A22 (2013-02-15)
Ultrafast time-resolved absorption spectroscopy is used to investigate exciton dynamics in CdSe nanocrystal films. The effects of morphology, quantum-dot versus quantum-rod, and preparation of nanocrystals in a thin film form are investigated. The measurements revealed longer intraband exciton relaxation in
Svetlana V Kilina et al.
Physical review letters, 110(18), 180404-180404 (2013-05-21)
Quantum confinement can dramatically slow down electron-phonon relaxation in nanoclusters. Known as the phonon bottleneck, the effect remains elusive. Using a state-of-the-art time-domain ab initio approach, we model the observed bottleneck in CdSe quantum dots and show that it occurs
Yong Li et al.
ACS nano, 7(3), 2240-2248 (2013-02-13)
Microbial cells have shown a great potential to biosynthesize inorganic nanoparticles within their orderly regulated intracellular environment. However, very little is known about the mechanism of nanoparticle biosynthesis. Therefore, it is difficult to control intracellular synthesis through the manipulation of
Shan Liang et al.
Optics express, 21(3), 3253-3258 (2013-03-14)
The CdS/SiO(2) core/shell nanowires (NWs) with controlled shell thickness were successfully synthesized and subsequently heat-treated at 500 °C. The influences of silica shell coating and annealing processes on their optical properties have been investigated. Compared with original CdS NWs, the

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