公开(公告)号：US11916180B2

公开(公告)日：2024-02-27

申请号：US16792000

申请日：2020-02-14

Applicant: The Regents of the University of California

Inventor： Jaewon Lee ,  Soe-Jin Ko ,  Jianfei Huang ,  Martin Seifrid ,  Hengbin Wang ,  Thuc-Quyen Nguyen ,  Guillermo C. Bazan

IPC: H01L31/00 ,  C07D495/04 ,  H01L51/00 ,  H01L51/42

CPC classification number: H01L51/0074 ,  C07D495/04 ,  H01L51/0053 ,  H01L51/0058 ,  H01L51/0068 ,  H01L51/4273

Abstract: 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.

公开(公告)号：US20230263056A1

公开(公告)日：2023-08-17

申请号：US18305957

申请日：2023-04-24

Applicant: The Regents of the University of California

Inventor： Jaewon Lee ,  Soe-Jin Ko ,  Jianfei Huang ,  Martin Seifrid ,  Hengbin Wang ,  Thuc-Quyen Nguyen ,  Guillermo C. Bazan

IPC: H10K85/60 ,  C07D495/04

CPC classification number: H10K85/6576 ,  C07D495/04 ,  H10K85/621 ,  H10K85/626 ,  H10K85/655 ,  H10K30/353

Abstract: 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.

公开(公告)号：US20200328357A1

公开(公告)日：2020-10-15

申请号：US16792000

申请日：2020-02-14

Applicant: The Regents of the University of California

Inventor： Jaewon Lee ,  Soe-Jin Ko ,  Jianfei Huang ,  Martin Seifrid ,  Hengbin Wang ,  Thuc-Quyen Nguyen ,  Guillermo C. Bazan

IPC: H01L51/00 ,  C07D495/04

Abstract: 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.