International Business Machines Corporation

Other

Johannes Windeln

James L Hedrick

Robert Dennis Miller

Urs T Duerig

Bernd W Gotsmann

Armin W Knoll

Teddie Peregrino Magbitang

Markus Schmidt

Erik Christopher Hagberg

Hans-Juergen Eickelmann

Victor Yee-Way Lee

Jane Elizabeth Frommer

Russell Clayton Pratt

Ruediger Kellmann

Michael Haag

Charles Gordon Wade

Hartmut Kuehl

Joerg Weyerhaeuser

Dirk Hammel

Heinz Hilgers

Holger Roehl

Volker Rossbach

Mihal Karunaratna

Heinz Nottelmann

Rainer Morbitzer

Theo Schmitz

A stacked-layered thin film solar cell. The solar cell has reduced absorber thickness and an improved back contact for Copper Indium Gallium Selenide solar cells. The back contact provides improved reflectance particularly for infrared wavelengths while still maintaining ohmic contact to the semiconductor absorber. This reflectance is achieved by producing a back contact having a highly reflecting metal separated from an absorbing layer with a dielectric layer.

Solar cell with reduced absorber thickness and reduced back surface recombination

Manufacture for an improved stacked-layered thin film solar cell. Solar cell has reduced absorber thickness and an improved back contact for Copper Indium Gallium Selenide solar cells. The back contact provides improved reflectance particularly for infrared wavelengths while still maintaining ohmic contact to the semiconductor absorber. This reflectance is achieved by producing a back contact having a highly reflecting metal separated from an absorbing layer with a dielectric layer.

Manufacture of an improved stacked-layered thin film solar cell. The solar cell has reduced absorber thickness and an improved back contact for Copper Indium Gallium Selenide solar cells. The back contact provides improved reflectance particularly for infrared wavelengths while still maintaining ohmic contact to the semiconductor absorber. This reflectance is achieved by producing a back contact having a highly reflecting metal separated from an absorbing layer with a dielectric layer.

An approach is presented for designing a polymeric layer for nanometer scale thermo-mechanical storage devices. Cross-linked polyimide oligomers are used as the recording layers in atomic force data storage device, giving significantly improved performance when compared to previously reported cross-linked and linear polymers. The cross-linking of the polyimide oligomers may be tuned to match thermal and force parameters required in read-write-erase cycles. Additionally, the cross-linked polyimide oligomers are suitable for use in nano-scale imaging.

Method for high density data storage and imaging

Embodiments embed at least one Radio Frequency Identification (RFID) tag into the mold. The mold may comprise a cavity adapted to the geometrical form of the RFID tag. In some embodiments, the cavity is marginally bigger than the RFID tag. In many embodiments, the cavity with the embedded the RFID tag is covered by glue. Thus, the mold, the RFID tag and the glue may be suitable for temperatures up to, e.g., 400&#xb0; C. Further the mold and the glue may be resistant to concentrated sulfuric acid and formic acid. The serial number of the mold may be stored in the RFID tag. The RFID tag may detect characteristic data during the transfer of the solder from the mold to the wafer. In one embodiment, the RFID tag may detect the temperature. In another embodiment, a plurality of RFID tags may detect various temperatures for controlling the packaging process.

Packaging a semiconductor wafer

Method for forming deformed regions in a resin layer

A method for recycling a disk having a layered structure on a glass substrate is disclosed. Initially, the disk is exposed to gaseous sulphur dioxide in a humid environment. Then, the disk is treated with hot water to remove the layered structure from the glass substrate.

Method for recycling a disk having a layered structure on a glass substrate

Method for the modification of the surfaces of polytetrafluoroethylene,

The invention concerns a method of increasing the lubricant retention of a magnetic layer, wherein a magnetic layer, containing magnetic particles dispersed in a curable organic binder system and organic solvents and an additive, is cured in a two-step process, wherein the magnetic layer, in a first step, is heated in an inert gas for a given time to a given temperature and, in a second step, in an inert gas to which oxygen has been added, for a given time to a given temperature. According to a preferred embodiment of the invention, the magnetic layer with polyvinyl methyl ether (PVME) as an additive is heated in nitrogen for 2.5 hours to 234.degree. C. and, after cooling down, in a nitrogen atmosphere containing 30 vol % oxygen for 60 minutes to 234.degree. C. In the first step, this kind of curing leads to polymerization of the binder and phase separation of PVME and in the second step of oxidation of PVME, forming a plurality of pores in the magnetic layer.

Method of increasing the lubricant retention of magnetic disks

Growing community of inventors

Bodenheim, Germany

Johannes Windeln