
	Where results make sense

Topic: Cadmium selenide

Related Topics

nickel cadmium batteries

nickel cadmium

Cadmium pigments

Cadmium Telluride

Cadmium chloride

silver cadmium batteries

Cadmium selenide

cadmium iodide

In the News (Fri 11 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	High efficiency selenium heterojunction solar cells - Patent 4064522
		Cadmium selenide layers that are much thicker become opaque and render the cell less efficient inasmuch as most of the current carriers generated by the sunlight are generated in the selenium layer.
		Cadmium selenide displays high carrier concentrations and carrier mobility, both of which are desirable properties in the vicinity of the heterojunction because these properties determine the current generating capabilities of the cell.
		Cadmium selenide and cadmium oxide layers were formed in one process step by reactively sputtering cadmium metal in a 60/40 nitrogen/oxygen gas mixture at a pressure of ten microns of mercury for eighteen minutes at a radio frequency power density of 0.5 watt/cm.sup.2.
	www.freepatentsonline.com /4064522.html (1588 words)

	Cadmium
		Electrolytic cadmium is 99.95% pure and is obtained primarily as a by-product of the zinc industry by treating the flue dust and fumes from the roasting of the ores.
		Cadmium is implemented as an alloying element in soft solders and in fusible alloys.
		Cadmium is used as a white corrosion-resistant plating metal (as a anode).
	www.azom.com /details.asp?ArticleID=589 (528 words)

	Dartmouth Toxic Metal Research - Toxic Metals
		Cadmium is extremely rare in the Earth’s crust, with less than one-fifth of a gram of the metal — about one fifth of the metal in a thumbtack — in every ton of crustal material.
		Cadmium quickly became concentrated in the crops, and before long local women began to experience pain in their bones and joints, which eventually became so excruciating that they were bed-ridden.
		Cadmium is known to accumulate in the kidneys, and some scientists believe that damage to kidney tissue may lead to kidney disease, high blood pressure and heart disease.
	www.dartmouth.edu /~toxmetal/TXQAcd.shtml (2458 words)

	Cadmium and Cadmium Compounds First Listed in the First Annual Report on Carcinogens as Reasonably Anticipated to be ...
		Cadmium (CAS No. 7440-43-9) and Cadmium Compounds are known to be human carcinogens based on sufficient evidence of carcinogenicity from studies in humans, including epidemiological and mechanistic information which indicate a causal relationship between exposure to cadmium and cadmium compounds and human cancer.
		Cadmium carbonate occurs as a white amorphous powder that is soluble in acids, potassium cyanate, and ammonium salts and insoluble in ammonia and water, both cold and hot.
		Cadmium sulfate and cadmium sulfide are used in pigments, fluorescent screens, in photoelectric cells, and in electroplating.
	www.mindfully.org /Pesticide/Cadmium-Human-Carcinogen-NTP-Jan01.htm (4206 words)

	Cadmium (PIM 089)
		Cadmium ions are precipitated from solution by hydroxide ions, and form insoluble white hydrated compounds with carbonates, phosphates, arsenates, oxalates and ferrocyanides.
		Free cadmium ions in the cells as a result of the degradation of metallothionein initiate the synthesis of new metallothionein which then binds the cadmium thereby protecting the cell from the highly toxic free cadmium ions.
		Cadmium chloride has been shown to be a weak, direct-acting mutagen in the Ames bacterial mutagenicity assay and a correlation was seen between its toxicity and mutagenicity (Wong, 1988).
	www.inchem.org /documents/pims/chemical/cadmium.htm (11103 words)

	All the information on Cadmium
		Cadmium is added principally to alloys based on copper, tin, lead and zinc although several others benefit from its presence.
		Cadmium sulphide photoconductive cells are used in photographic exposure meters for cameras where the CdS cell acts as a light-sensitive variable resistor.
		Cadmium compounds, such as cadmium sulphide, cadmium tungstate, cadmium borate and cadmium silicate, are essential in the preparation of light-emitting phosphors that are activated by electron beams.
	www.cadmium.org /app_allo.html (1152 words)

	Georgia Institute of Technology :: News Room :: Study Produces Road Map for Nanomanufacturing
		In their experimental set-up, powdered cadmium selenide was heated to hundred of degrees Celsius in a simple horizontal tube furnace under the flow of nitrogen gas, using gold as a catalyst.
		The researchers varied the temperature at the cadmium selenide source, the temperature of the silicon substrate where the structures grew, and the gas pressure inside the furnace.
		Cadmium selenide nanosaws and nanocombs are the most finicky to grow.
	www.gatech.edu /news-room/release.php?id=682 (979 words)

	Mercury-based quaternary alloys of infrared sensitive materials - Patent 6208005
		The mole fraction of the cadmium in the alloy is termed the "x" value, and this determines the wavelength of response for the infrared detector.
		The buffer layer and the cadmium zinc telluride layers have a mole fraction of zinc which produces within these layers a lattice constant which is substantially similar or identical to the lattice constant of the mercury telluride layers.
		A homogeneous alloy structure of mercury cadmium zinc telluride is formed by vapor phase epitaxy on the buffer layer of alternating layers of mercury telluride and cadmium zinc telluride.
	www.freepatentsonline.com /6208005.html (4085 words)

	Gamblin Artists Colors - Artists Grade Oils - Reds (Site not responding. Last check: 2007-11-03)
		Cadmium Red, bright red in shades from orange/red to maroon, was made at the turn of the 20th century.
		Cadmium Red Light: Orange/red made by calcination of cadmium sulfide and selenium first synthesized in 1910.
		Cadmium Red Medium: Made to be darker than Cadmium Red Light by longer exposure to heat and the addition of sulfo-selenide.
	www.gamblincolors.com /materials/reds.html (1143 words)

	Cadmium selenide - Wikipedia, the free encyclopedia
		Cadmium selenide (CdSe) is a solid, binary compound of cadmium and selenium.
		Cadmium selenide is a semiconducting material, but has yet to find many applications in manufacturing.
		Cadmium selenide in its wurtzite crystal structure is an important II-VI semiconductor.
	en.wikipedia.org /wiki/Cadmium_selenide (747 words)

	Smaller Quantum Dots Improve In Vivo Imaging (Site not responding. Last check: 2007-11-03)
		Now, a new type of quantum dot, smaller even than the original nanoscale ones made of cadmium selenide and zinc sulfide, could provide a means of tracking key biochemical processes in living animals, as well as act as a tool for mapping a more extensive set of lymph nodes for cancer metastases.
		The fruits of the group’s labors is a family of quantum dots that have a core of indium selenide surrounded by a shell of zinc sulfide.
		Though the two types of quantum dots are close in size physically when created in the laboratory, the cadmium selenide quantum dots, as well as the new ones lacking poly(ethylene glycol), become functionally larger when mixed with biological fluids because of the large number of proteins that stick to their surfaces.
	nano.cancer.gov /news_center/nanotech_news_2006-02-21b.asp (564 words)

	Purity
		The finest cadmium red paint is made only from the purest cadmium sulfo‑selenide, C.I. Name: PR 108, C.I. Number: 77196, and not from cadmium‑barium sulfo‑selenide mixtures such as, PR 108, C.I. which contains 15 percent barium sulfate, or PR 108:1, C.I. 77202, which contains more than 15 percent barium sulfate.
		Such cadmium barium mixtures fit into the professional grade because they tend to be weaker in intensity and the paint is more transparent, which is undesirable in a cadmium color.
		The few manufacturers report color index names, such as PR 108 for cadmium red, on their tubes do not include the color index number, which would indicate the specific pigment.
	www.trueart.info /purity.htm (1143 words)

	Williamsburg Handmade Oil Colors - Cadmium Colors
		Our cadmiums are more heavily pigmented and more brilliant than other premium paints.
		For example, our Cadmium Yellow Light could be called Cadmium Yellow Pale by some: our Cadmium Yellow Medium might be considered a Cadmium Yellow Light; our Cadmium Deep Yellow might be considered Cadmium Yellow Medium.
		With cadmiums this is a difficult balance to maintain.
	www.williamsburgoilpaint.bizland.com /OilColors/cadmiums.htm (155 words)

	Quantum Dots (Site not responding. Last check: 2007-11-03)
		Cadmium is a member of the elements found in the 12th column, group II B, of the Periodic Table of Elements.
		Oleic acid is one such fatty acid that, together with a relatively inert, non-coordinating solvent along with a suitable cadmium compound, is capable of producing high quality core NCs.
		Green chemistry or not, cadmium, selenium, tellurium, and mercury ions are highly toxic.
	www.viewsfromscience.com /documents/webpages/nanocrystals_p2.html (987 words)

	Cadmium pigments - Wikipedia, the free encyclopedia
		About 65% to 75% of cadmium produced worldwide is used in the production of Ni-Cd Batteries.
		The principal pigments are a family of yellow/orange/red cadmium sulfides and sulfoselenides.
		Nowadays, the cadmium pigments have been partially replaced by azo pigments.
	en.wikipedia.org /wiki/Cadmium_pigments (409 words)

	Why are cinnabar, vermilion, and cadmium orange colored? (pure semiconductors)
		Consider now a "medium-band-gap semiconductor," a material with a somewhat smaller band gap, such as the compound cadmium sulfide CdS; this is also the pigment cadmium yellow and the mineral greenockite (more examples in table at right).
		All light is absorbed when the band-gap energy is less than the 1.77 eV (700nm) limit of the visible spectrum and these "narrow-band- gap semiconductors" are fl, as in the last three materials of Table 11.
		form the painter's pigment cadmium orange and are also used to color glass and plastic.
	webexhibits.org /causesofcolor/10.html (478 words)

	Tuning the nanoworld
		Examples of nanostructures made possible by the Alivisatos group's new method include tetrapods of cadmium selenide (left) extended with segments of cadmium telluride (upper right), which can be made to branch in turn (lower right).
		Scientists at Lawrence Berkeley National Laboratory have found new ways of combining quantum dots and segmented nanorods into multiply branching forms and have applied new ways to calculate the electronic properties of these nanostructures, whose dimensions are measured in billionths of a meter.
		On the left, green marks the conduction band's lowest energy state, which is physically separated in the structure from the valence band's highest energy state, shown in green on the right.
	www.eurekalert.org /pub_releases/2004-07/dbnl-ttn070204.php (1209 words)

	SPI Supplies - MSDS Safety - SPI-Chem Cadmium Selenide Powder and Chunks (Site not responding. Last check: 2007-11-03)
		SPI#01715-AA, -AB, -MB, -SS Cadmium Selenide Powder and SPI#01715C-AA, -AB, -MB, -SS Cadmium Selenide Chunks CAS #....................
		Cadmium selenide: 99.997% Molecular weight: 144.33 NFPA Rating: Not known
		But never ever use water on a fire with cadmium telluride.
	www.2spi.com /catalog/msds/cadmium-selenide-msds.html (1501 words)

	University of Arkansas - Daily Headlines
		This technique creates a nanocrystal product that does not contain the carcinogenic cadmium element, and can be used for biomedical labeling, light emitting diodes, lasers and sensors.
		He and his group have been working on a way to replace the cadmium selenide with the non-toxic zinc selenide for several years.
		While zinc-based nanocrystals have none of the toxicity of cadmium-based ones, until now they proved less effective as a semiconducting nanocrystal emitters because the nanocrystals did not emit light through most of the visible spectrum.
	dailyheadlines.uark.edu /6504.htm (459 words)

	Measurement of Cadmium Selenide ( CdSe ) Nanocrystals and Cluster Molecules Using Dynamic Light Scat
		Measurement of Cadmium Selenide (CdSe) Nanocrystals and Cluster Molecules Using Dynamic Light Scat
		Measurement of Cadmium Selenide (CdSe) Nanocrystals and ClusterMolecules Using Dynamic Light Scattering
		Measurement of Cadmium Selenide (CdSe) Nanocrystals and Cluster Molecules Using Dynamic Light Scattering
	www.azom.com /details.asp?ArticleID=2723 (942 words)

	KREMER Pigments: Cadmium and Color Pigments (Site not responding. Last check: 2007-11-03)
		Cadmium pigments are excellently lightfast, opaque and brilliant with high coloring strength.
		This purity means a cleaner, brighter color and lower occurence of free cadmium than in cheaper grades.
		Because of growing concern about possible health hazards related to the use of cadmium pigments in the coatings industry, chemical companies have long sought after a possible organic substitute.
	www.kremer-pigmente.de /englisch/krpigm02.htm (1117 words)

	Nanomanufacturing: Systematic study of nanostructure growth yields production 'road map'
		Researchers have taken an important step toward high-volume production of new nanometer-scale structures with the first systematic study of growth conditions that affect production of one-dimensional nanostructures from the optoelectronic material cadmium selenide (CdSe).
		Lower temperatures at the source material (630 degrees C), higher pressures (600 millibars) and substrate temperatures of approximately 575 degrees C produce the highest percentage of nanosaws and nanocombs.
		It is perhaps best known as the basis for quantum dots that have potential applications in biomedical imaging.
	www.eurekalert.org /pub_releases/2005-10/giot-nss103005.php (863 words)

	Cadmium Selenide Powder (99.999%) and Chunks (99.997%) - SPI Supplies (Site not responding. Last check: 2007-11-03)
		Cadmium Selenide Powder (99.999%) and Chunks (99.997%) - SPI Supplies
		Cadmium selenide is available in standard quantities of 1, 10, 100, and 1000 g bottles as well as in bulk quantities for production applications.
		The chunks at 3-12 mm in size are optimum for vacuum evaporation applications.
	www.2spi.com /catalog/chem/cadmium-selenide.shtml (121 words)

	Williamsburg Handmade Oil Colors - Native Italian Earth Colors (Site not responding. Last check: 2007-11-03)
		This is a very beautiful high-keyed red- different from cadmium red in that it leans toward warm, glowing pinks when added to white.
		Superb Color, similar to Cadmium Red Light in its orange - like warmth, but extremely versatile as a mixing color - very clear pinks.
		In mass-tone it's similar to Cadmium Red Purple, but mixes very differently.
	www.williamsburgoilpaint.bizland.com /OilColors/RedOils.htm (428 words)

	Clean Edge - The Clean-Tech Market Authority - News
		In papers published recently in the journals Nature Physics and Applied Physics Letters, the scientists demonstrate that carrier multiplication is not unique to lead selenide nanocrystals, but also occurs with very high efficiency in nanocrystals of other compositions, such as cadmium selenide.
		The Los Alamos findings point toward practical photovoltaic technologies that may utilize such traditional solar cell materials as cadmium telluride, which is very similar to cadmium selenide.
		Other interesting opportunities may also be associated with the use of carrier multiplication in solar-fuel technologies and specifically, the production of hydrogen by photo-catalytic water splitting.
	www.cleanedge.com /story.php?nID=3915 (400 words)

	NCSR - Cadmium Selenide
		Cadmium Selenide is a Wurtzite structure II-VI semiconductor with many similar properties to ZnSe despite the different lattice structure.
		Specifically, CdSe does not easily form p-type material, however Nitrogen Doping has produce p-type material with net acceptor concentrations in the low 1017 cm-3 range.
		Cadmium Selenide has also been grown with a Zincblende lattice and used to form ohmic contacts for ZnSe (Ref.
	www.onr.navy.mil /sci_tech/31/312/ncsr/materials/cdse.asp (99 words)

	Material Safety Data Sheet
		Refer to 29CFR1910.1027 for regulations on respiratory protection required during exposure to cadmium and cadmium compounds.
		Cadmium and cadmium compounds are highly toxic and experimental carcinogens.
		Refer to 29CFR1910.1027 for regulations concerning cadmium and cadmium compounds.
	www.nd.edu /~exafs/msds/cdse.htm (667 words)

Try your search on: Qwika (all wikis)