chalcogenides.com

Chalcogenide electrochemical cell - Patent 4301221:

"A battery is provided in which the anode contains an alkali metal in a high state of thermodynamic activity; the cathode comprises a partially alkali metal-intercalated chalcogenide of the formula A.sub.y MZ.sub.x wherein A is an alkali metal more electropositive and larger than the anode alkali metal, M is a transition metal of Group IV or V, x is a numerical value of from about 1.8 to about 2.1, y is a numerical value of from about 0.01 to about 1 and Z is sulfur, selenium or tellurium; and the electrolyte comprises ions of the anode metal in a medium which is compatible with the anode and cathode allowing transport of the ion from anode to intercalate into the cathode."

Thin film diode integrated with chalcogenide memory cell Number:6,855,975 from the United States Patent and Trademark Office (PTO) owispatent:

"An integrated programmable conductor memory cell and diode device in an integrated circuit comprises a diode and a glass electrolyte element, the glass electrolyte element having metal ions mixed or dissolved therein and being able to selectively form a conductive pathway under the influence of an applied voltage. In one embodiment, both the diode and the memory cell comprise a chalcogenide glass, such as germanium selenide (e.g., Ge.sub.2 Se.sub.8 or Ge.sub.25 Se.sub.75).

The first diode element comprises a chalcogenide glass layer having a first conductivity type, the second diode element comprises a chalcogenide glass layer doped with an element such as bismuth and having a second conductivity type opposite to the first conductivity type and the memory cell comprises a chalcogenide glass element with silver ions therein. In another embodiment, the diode comprises silicon and there is a diffusion barrier layer between the diode and the chalcogenide glass memory element. Methods of fabricating integrated programmable conductor memory cell and diode devices are also disclosed.

Patent Number: 6,855,975 Issued on 02/15/2005 to Gilton "

Optics Express:

"We have fabricated and tested planar reflectors exhibiting an omnidirectional stop band centered near 1750 nm wavelength. The reflectors are comprised of multiple layers of Ge33As12Se55 chalcogenide glass and polyamide-imide polymer. Glass layers were deposited by thermal evaporation and polymer layers were deposited by spin-casting. Thin film stacks of up to 13 layers showed good planarity and adhesion, which we attribute to the well-matched thermo-mechanical properties of the materials. The optical properties of the reflectors were tested in both transmission and reflection, and the results are in good agreement with theoretical predictions. Relatively low-temperature processing steps were employed, making these reflectors of interest for integrated optics.
© 2005 Optical Society of America
» View Full Text: PDF (2358 KB)"

Department of Applied Chemistry:

"Calibration of a Chalcogenide Glass Membrane Ion Selective Electrode for the Determination of Free Fe3+ in Seawater. Part I: Measurements in UV Photooxidised Seawater by R. De Marco and D.J. Mackey. Marine Chemistry, 68, 283-294, 2000."

Cadmium-sulphide/copper-sulphide thin-film solar cells:
"Cadmium-sulphide/copper-sulphide thin-film solar cells - Review of methods of producing the CdS and Cu2S layers"

Small Times: News about MEMS, Nanotechnology and Microsystems: "MAKING QUANTUM DOTS LESS TOXIC BROADENS USERS' OPTIONS
By Candace Stuart
Small Times Editor-in-Chief

To make Cornell dots, researchers attach organic dye molecules onto a core that then is encased in silica.

Aug. 2, 2005 – Today quantum dots shine in the life sciences, where researchers tack them onto molecules in cells and use their fluorescing properties to track their movement. The tags allow scientists to spy on cellular processes and better understand the inner workings of biological systems.

But quantum dot manufacturers have their sights on much larger and more lucrative markets: solar cells, electronics and even diagnostics. Manufacturers have recognized that in order to achieve their goals, though, they'll need a much different quantum dot than those used in research."

Kelley's team is studying the properties and technical problems of gallium selenide nanoparticles. The properties of the nanoparticle change as the size changes. One of those properties is the part of the light spectrum it absorbs.

"You can make dramatically different colors just by changing the size of the nanoparticles," Kelley said.

Kelley is developing nanoparticles that are just the right size for solar cells -- they can absorb all visible light but nothing from the invisible light at the red end of the spectrum, which would reduce voltage.

"The correct-sized nanoparticles look dark red to black. There is an optimum size and that's what you want to shoot for," Kelley said.

Link From www.mediarelations.ksu.edu

The opto-mechanical effect observed in amorphous chalcogenide films deposited onto clamped STM cantilevers [1] has been investigated. In this, bandgap light, incident on the chalcogenide film and linearly polarized either parallel or perpendicular to the cantilever axis, reversibly causes respectively either a contraction or an expansion of the chalcogenide layer, resulting in an optically-actuated displacement of the free end of the clamped cantilever.

This effect is electronic, not thermal, in origin, and is believed to be caused by the same photoinduced structural rearrangements that are responsible for the optically induced optical anisotropy observed in chalcogenide glasses. Possible applications of this new all-optical actuation for optical switching will be discussed.

http://joam.infim.ro/JOAM/pdf3_2/Stuchlik.pdf

Having selenium or tellurium elemental semiconductor component

Link from www.patentstorm.us

Various CdS solar cell and device patents

Link From www.patentstorm.us