High Mobility Organic Semiconductors

Tech ID: 28980 / UC Case 2012-316-0


Researchers at the University of California, Santa Barbara have discovered ways to improve organic field effect transistor (OFET) mobility up to 3x, the synthesis of benzoporphyrin for electronics, a way to improve mobility in fullerene derivatives, and a method of incorporating a degradable poly(propylene carbonate) polymer additive into a BP precursor.


2012-316: Conjugated Copolymers Chiral Side Chain for Organic Thin Film Transistors

A method of producing a polymer that comprises a regioregular conjugated main chain section having an enantiopure or enantioenriched chrial side chain. The application of the chiral side chain could improve OFET mobility at 3 times, indicating the importance of the control of the chirality of the asymmetric branched side chain. Even higher mobility would be achieved for polymers with enatiopure chiral side chain. US Patent No. 8,729,221


2012-591: Benzodipyrrolidones & Their Polymers: Synthesis and Applications for Organic Solar Cells

Conjugated semiconductors have received more and more attention due to their intriguing electron and optoelectronic properties. This invention relates to organic semiconductors containing benzodipyrrolidone unit. More specifically, to the synthesis of benzodipyrrolidone and their polymers and small molecules for electronic and optoelectronic applications.  US Patent No. 9,379,335


2009-092: Isoelectronic Heteroanalogues of PCBM and C60: N-Bridged PCBMs for Organic Field Transistors

A way to improve the mobility in fullerene derivatives using an inexpensive method of solubilization of fullerenes for organic photovoltaics. This work aids to the future preparation of improved mobility fullerene derivatives. US Patent No. 8,247,548


2011-167: Solution-Processed Nanostructured Benzoporphyrin (BP) with Polycarbonate Binder for Photovoltaics

A way of incorporating a degradable poly(propylene carbonate) (PC) polymer additive into a BP precursor solution that increases solution viscosity and improves processability of solar cell devices. This allows for greater flexibility in film preparation techniques. Further, the disclosed PC polymer additive used in the preparation of benzoporphyrin/fullerene solar cells does not diminish efficiency. The PC fully decomposes on annealing and does not change the crystal structure or texturing of BP. US Patent No. 9,260,443



  • Organic thin film transistors
  • Organic photovoltaics
  • Optoelectronic devices

Patent Status

Country Type Number Dated Case
United States Of America Issued Patent 8,729,221 05/20/2014 2012-316


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photovoltaics, optoelectronics, polymers, solar, indadvmat

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