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9CPA

Product Name: 9CPA, CzPA, 9-Carbazolepropionic acid, Carbazol-9-yl-propanoic acid
Catalog Number: ALCM6622544
CAS Number: 6622-54-4

Product Description

Chemical Structure of 9CPA

9CPA (3-(9H-Carbazol-9-yl)propanoic acid) is a carbazole-based small molecule engineered to form high-quality self-assembled monolayers (SAMs) on conductive electrode surfaces. Comprising a carbazole core, a propyl spacer, and a carboxylic acid anchoring group, 9CPA functions as an efficient hole-selective layer (HSL) in organic and perovskite photovoltaic devices.

This SAM material is particularly effective in p–i–n perovskite solar cells and non-fullerene acceptor (NFA) organic solar cells. Its molecular structure enables high monolayer packing density and promotes favorable energy level alignment at the interface, thereby improving hole extraction and boosting device performance.

Compared to its structural analogue 9CAA, 9CPA features a longer alkyl spacer, which enhances monolayer ordering and interfacial contact with the substrate. This contributes to improved device stability and charge transport. In tin–lead (Sn–Pb) alloyed perovskite solar cells, 9CPA has outperformed traditional materials like PEDOT:PSS in both efficiency and operational durability.

9CPA is fully compatible with solution processing methods using common polar solvents, enabling facile deposition under mild conditions.

Key Features

Carbazole-based SAM material for hole transport or extraction
Improved energy level alignment and interfacial contact
Longer alkyl spacer enhances monolayer packing density
Solution-processable from polar solvents (e.g., ethanol, IPA)
Alternative to PEDOT:PSS for perovskite and organic photovoltaics
Supports improved efficiency and long-term device stability

Product Information

Item	Details
CAS Number	6622-54-4
Catalog Number	ALCM6622544
Synonyms	CzPA, Carbazol-9-yl-propanoic acid, 3-(9H-Carbazol-9-yl)propanoic acid, 9-carbazolepropionic acid
Chemical Formula	C15H13NO2
Molecular Weight	239.27 g/mol
Purity	> 98% (HPLC)
Appearance	White powder or crystals
Melting Point	172-176 °C
HOMO / LUMO	5.19 eV (WF FTO)
Absorption	Not available
Fluorescence	Not available

Applications

Hole transport or extraction layer in p–i–n perovskite solar cells
Interfacial layer for NFA-based organic solar cells
Interface engineering for enhanced charge extraction and stability

Why Choose Alfa Chemistry?

Alfa Chemistry supplies high-purity SAM materials with strict quality assurance, excellent batch-to-batch consistency, and dependable global availability. Comprehensive documentation and responsive technical support are provided to meet the evolving demands of advanced photovoltaic research.

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