Organic solar cell and photodetector materials and devices

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11916180
APP PUB NO 20200328357A1
SERIAL NO

16792000

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Abstract

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Narrow bandgap n-type small molecules are attracting attention in the near-infrared organic optoelectronics field, due to their easy tunable energy band with a molecular design flexibility. However, only a few reports demonstrate narrow bandgap non-fullerene acceptors (NFAs) that perform well in organic solar cells (OSCs), and the corresponding benefits of NFA photodiodes have not been well investigated in organic photodetectors (OPDs). Here, the ultra-narrow bandgap NFAs CO1-4F, CO1-4Cl and o-IO1 were designed and synthesized for the achieved efficient near-infrared organic photodiodes such as solar cells and photodetectors. Designing an asymmetrical CO1-4F by introducing two different π-bridges including alkylthienyl and alkoxythienyl units ultimately provides an asymmetric A-D′-D-D″-A molecular configuration. This enables a delicate modulation in energy band structure as well as maintains an intense intramolecular charge transfer characteristic of the excited state.

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Patent Owner(s)

  • THE REGENTS OF THE UNIVERSITY OF CALIFORNIA; THE MITSUBISHI CHEMICAL CORPORATION, A JAPANESE CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bazan, Guillermo C Santa Barbara, US 96 2315
Huang, Jianfei Goleta, US 6 2
Ko, Soe-Jin Goleta, US 2 1
Lee, Jaewon Goleta, US 119 611
Nguyen, Thuc-Quyen Santa Barbara, US 20 122
Seifrid, Martin Goleta, US 3 6
Wang, Hengbin Santa Barbara, US 25 70

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