Solar Cell & Sensors Portfolio Available for Sale by ICAP Patent Brokerage

ICAP Patent Brokerage

New York, Jan. 22, 2014 (GLOBE NEWSWIRE) -- ( -- ICAP Patent Brokerage announces for sale a patent portfolio covering techniques for Solar Cells & Sensors from Rose Street Labs, LLC. This IP package is available via sealed bid with a bidding deadline of January 30, 2014. Bids for this lot will be accepted starting January 28 through January 30.

"We are pleased to offer this portfolio to our global base of patent buyers. The assets cover solar energy technology relevant to a wide range of sectors and companies, including those that manufacture solar cells, photovoltaic devices and sensors, as well as semiconductor companies focused on display and capacitive touchscreens," says Dean Becker, CEO of ICAP Patent Brokerage.

Key Characteristics & Benefits

With priority dates from 2007, the disclosed portfolio includes (six) US granted patents that broadly cover solar cell technology, including improved power conversion efficiencies. Conventional solar cells that convert the sun's radiant energy into electrical energy using a single semiconductor material with a single depletion region in the P-N junction have limited intrinsic efficiency of ~31%, primarily because no single material can absorb the broad photon ranges of solar radiation. Stacking or connecting a plurality of single P-N junction solar cells of varying bandgaps increases yield, while problems related to incomplete absorption and excess energy loss from un-collected electron-hole pairs due to un-optimized bandgaps persist. Importantly, US 8,039,740 describes a tandem solar cell that includes an alloy (e.g., InGaN or InAlN) forming one P-N junction and a Si P-N junction on the other side of the heterojunction. Effectively, this simple process produces two solar cells with coordinated bandgaps, connected by an ideal tunnel junction.

As disclosed in US 8,232,470, which covers an intermediate band solar cell (IBSC) that includes a P-N junction based on dilute III-V nitride material and a pair of contact blocking layers, the resultant absorber layers have multiple bandgaps and compositionally graded nitrogen concentrations that provide electric fields more conducive to charge collection. Also disclosed is an ultraviolet light sensor made up of a silicon wafer and multiple Nitride layers (e.g., GaN, InGaN, AlGaN, or InAlN) adjacent to the wafer substrate, instead of more expensive wafer materials (e.g., silicon carbide or sapphire wafers), thereby reducing significantly associated manufacturing costs. In addition to use in solar energy, the tandem junction features outlined above could find application in the field of heterogeneous semiconductor integration by integrating nitride semiconductors with silicon based devices.

The assets in the portfolio have been cited by industry leaders such as Samsung, Epv Solar and Scannanotek.

See this technical description of the techniques for Solar Cells & Sensors IP sales offering.

To learn more about the assets available for sale in this portfolio or to place a bid:

Contact Paul Greco of ICAP Patent Brokerage at (212) 815-6692 or via email at

Visit our website to make a patent submission for an upcoming sealed bid event.

Follow us on Twitter (@ICAP_Auction_IP) and join our LinkedIn group.

About ICAP Patent Brokerage

ICAP Patent Brokerage is a division of ICAP plc and the world's largest intellectual property brokerage and patent auction firm.

About ICAP

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Source:ICAP Patent Brokerage LLC