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Br-2EPT

Product Name: Br-2EPT, (2-(3,7-Dibromo-10H-phenothiazin-10-yl)ethyl)phosphonic acid
Catalog Number: ALCM2826271172
CAS Number: 2826271-17-2

Product Description

Chemical Structure of Br-2EPT

Br-2EPT is a high-purity self-assembled monolayer (SAM) molecule incorporating a dibromo-substituted phenothiazine unit, an ethyl spacer, and a phosphonic acid anchoring group. It is designed for solution processing to form uniform, ultrathin monolayers on transparent conductive substrates such as ITO or FTO, functioning as an efficient hole transport or extraction layer in both organic and perovskite solar cells.

In perovskite optoelectronic devices, Br-2EPT ensures favorable energy-level alignment at the electrode interface, which reduces nonradiative recombination and energy loss. The bromine atoms help lower the HOMO level and enhance the open-circuit voltage, while halogen bonding with the perovskite surface and defect passivation by sulfur atoms improve interfacial contact and charge transfer.

Offering a promising alternative to PEDOT:PSS, Br-2EPT combines superior device performance and long-term stability with compatibility for low-concentration ethanol-based solution processing. It is particularly suitable for use in p-i-n structured perovskite solar cells and non-fullerene acceptor (NFA) organic photovoltaics.

Key Features

High Interface Compatibility – Ensures optimal energy-level alignment with active layers
Enhanced Charge Extraction – Minimizes interfacial recombination and promotes hole transport
Defect Passivation – Sulfur atoms and bromine-induced halogen bonding mitigate trap states
Solution Processable – Compatible with ethanol and other common solvents at low concentration
Device Versatility – Applicable to p-i-n perovskite and NFA-based organic solar cells

Product Information

Item	Details
CAS Number	2826271-17-2
Catalog Number	ALCM2826271172
Synonyms	(2-(3,7-Dibromo-10H-phenothiazin-10-yl)ethyl)phosphonic acid
Chemical Formula	C14H12Br2NO3PS
Molecular Weight	465.10 g/mol
Purity	> 98% (HPLC)
Appearance	Off-white powder
Melting Point	Not available
HOMO / LUMO	HOMO = 5.47 eV, LUMO = 2.12 eV
Absorption	Not available
Fluorescence	Not available

Application Areas

Self-Assembled Monolayers (SAMs)
Hole Transport Layers (HTLs)
Hole Extraction Layers
Organic Photovoltaics (OPVs)
Perovskite Solar Cells (p-i-n structure)
Interface Engineering Materials

Why Choose Alfa Chemistry?

Alfa Chemistry offers a diverse portfolio of cutting-edge interface materials optimized for emerging photovoltaic technologies. With stringent quality control and expert technical support, we provide reliable, high-performance solutions tailored to research and industrial applications.

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