Invention Grant
- Patent Title: Substituted lead halide perovskite intermediate band absorbers
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Application No.: US15406419Application Date: 2017-01-13
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Publication No.: US10428100B2Publication Date: 2019-10-01
- Inventor: Matthew D. Sampson , Maria K. Chan , Alex B. Martinson
- Applicant: UCHICAGO ARGONNE, LLC
- Applicant Address: US IL Chicago
- Assignee: UChicago Argonne, LLC
- Current Assignee: UChicago Argonne, LLC
- Current Assignee Address: US IL Chicago
- Agency: Foley & Lardner LLP
- Main IPC: C03C8/00
- IPC: C03C8/00 ; C07F15/06 ; C07F7/24 ; H01L51/00 ; H01G9/20

Abstract:
Lead halide perovskites have proven to be a versatile class of visible light absorbers that allow rapid access to the long minority carrier lifetimes and diffusion lengths desirable for traditional single-junction photovoltaics. Computational screening identified both Fe- and Co-substituted MAPbBr3 as promising intermediate band candidate materials, and the later films were synthesized via conventional solution-based processing techniques. First-principles density functional theory (DFT) calculations support the existence of intermediate bands upon Co incorporation and enhanced sub-gap absorption, which are confirmed by UV-visible-NIR absorption spectroscopy. The simple tenability combined with steady state and time-resolved PL studies that reveal no sign of self-quenching suggest this class of materials to be promising for intermediate band photovoltaics.
Public/Granted literature
- US20180201637A1 SUBSTITUTED LEAD HALIDE PEROVSKITE INTERMEDIATE BAND ABSORBERS Public/Granted day:2018-07-19
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