Compounds Forming Hole-Transporting Self-Assembled Monolayer

Patent Abstract

The present invention relates to a compound is of formula (I)whereinX is selected from the group consisting of -S-, -Se-, -O-, -Te-, -NH-, -C(CH3)2-, -S(=O)-, -(O=)S(=O)-, and -C(=O)-;A is an anchoring group, wherein the anchoring group is selected from the groups consisting of• -C1-C18-alkyl-PO3H2, -C1-C18-alkyl-COOH, -C1-C18-alkyl-B(OH)2,•wherein n is 0, 1 or 2,••R1 and R2 are each selected from a mono-hetero aromatic moiety or a di-hetero aromatic moiety.The invention further relates to a method for preparing a self-assembled monolayer for perovskite solar cells.

Simple SummaryContent extracted with AI.

This patent discloses new chemical compounds that form self-assembled monolayers (SAMs) specifically designed for use as hole-transporting layers in perovskite solar cells, especially those based on tin rather than lead. These compounds have specialized structures that significantly improve charge carrier transport and selectivity, leading to higher efficiency and better stability for tin-based perovskite photovoltaic devices. The patent also provides methods for preparing and applying these SAMs onto substrates used in solar cells.

Use CasesContent extracted with AI.

• Improved hole-transport layers in tin-based perovskite solar cells for photovoltaics.
• Layer component in other optoelectronic or semiconductor devices requiring selective charge transport.
• Integration into low-toxicity, lead-free solar modules for home, industrial, or portable power generation.
• Potentially enhancing organic electronic devices where precise interface engineering is critical (e.g., OLEDs, transistors).

BenefitsContent extracted with AI.

• Significantly increases power conversion efficiency in tin-based perovskite solar cells compared to current materials like PEDOT and MeO-2PACz.
• Reduces defect concentration at the interface, improving crystallinity and device stability.
• Prepares the way for cheaper, non-toxic, and environmentally friendly solar cells (lead-free).
• Enables precise energetic alignment for efficient charge extraction and separation, optimizing device operation.
• Offers flexible and scalable processing methods (such as spin- or dip-coating) for industrial-scale manufacturing.
• Provides robust chemical interaction and stable attachment to metal oxide surfaces, enhancing durability.

Technical Classifications (CPCs)

Inventors & Applicants