公开(公告)号：US12286711B2

公开(公告)日：2025-04-29

申请号：US16286467

申请日：2019-02-26

Applicant: California Institute of Technology

Inventor： Christoph D. Karp ,  Alec S. Ho ,  Xinghao Zhou ,  Chengxiang Xiang ,  Nathan S Lewis

IPC: C25B1/04 ,  C01B3/06 ,  C25B1/55 ,  C25B9/05 ,  C25B9/19 ,  C25B9/73 ,  C25B15/08 ,  H01M8/0606

Abstract: A solar fuels generation system includes a first reactor that contains a first solution in which a charge carrier is reduced to a reduced charge carrier. The system also includes a second reactor that contains a second solution in which the reduced charge carrier reduces protons so as to generate hydrogen gas.

公开(公告)号：US12191415B2

公开(公告)日：2025-01-07

申请号：US16396495

申请日：2019-04-26

Applicant: California Institute of Technology

Inventor： Stefan Omelchenko ,  Sisir Yalamanchili ,  Nathan S Lewis

IPC: H01L31/0725 ,  H01L31/0216 ,  H01L31/0288 ,  H01L31/18

Abstract: Increasing the power conversion efficiency of silicon (Si) photovoltaics is a key enabler for continued reductions in the cost of solar electricity. Disclosed herein is a multi-junction photovoltaic cell that does not utilize a conventional interconnection layer and instead places a wide bandgap oxide conductor, for example, a metal oxide such as TiO2, between a top light absorption layer having a relatively large bandgap and a bottom light absorption layer having a relatively small bandgap. The advantageous omission of a conventional interconnection layer between the two subcells is enabled by low contact resistivity between the top and bottom light absorbing layers provided by the wide bandgap oxide conductor. The absence of the conventional interconnect between the subcells significantly reduces both optical losses and processing steps. The disclosed photovoltaic cell may thus enable low-cost, high-efficiency multi-junction devices through less complex manufacturing processes and lower material costs.