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Phosphorylcholine chloride

Product Name: Phosphorylcholine chloride
Catalog Number: ALCM107733
CAS Number: 107-73-3

Product Description

Chemical Structure of Phosphorylcholine Chloride

Phosphorylcholine chloride (N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium chloride) is a multifunctional small molecule commonly used as a self-assembled monolayer (SAM) material for tailoring the interfaces in perovskite solar cells. Its structure includes a quaternary ammonium group and a phosphonic acid moiety, enabling strong binding to metal oxide surfaces such as SnO₂ and NiOₓ for efficient interfacial modification.

In perovskite solar cells, phosphorylcholine chloride serves as both an interface modifier and a defect passivation agent. When applied to SnO₂ electron transport layers, it effectively reduces oxygen vacancies and enhances both conductivity and electron mobility. These improvements lead to better film morphology and device stability under ambient conditions. When co-assembled with molecules such as Me-4PACz, it improves surface coverage, suppresses leakage current, and promotes the growth of high-quality perovskite films.

Its multifunctional groups—phosphate, chloride, and quaternary ammonium—cooperatively address defects at both the metal oxide and perovskite interfaces. This dual-action mechanism mitigates interfacial trap states, suppresses nonradiative recombination, and alleviates residual stress in the perovskite layer, ultimately enhancing both performance and device longevity.

Key Features

Efficient interface modification for metal oxides (SnO₂, NiOₓ)
Effective passivation of surface and bulk defects
Enhances conductivity and electron mobility
Facilitates the formation of high-quality perovskite films
Compatible with co-SAM strategies for interface engineering

Product Information

Item	Details
CAS Number	107-73-3
Catalog Number	ALCM107733
Synonyms	Phosphorylcholine, Phosphocholine chloride, Choline phosphate, N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium chloride
Chemical Formula	C5H15ClNO4P
Molecular Weight	219.60 g/mol
Purity	> 98% (HPLC)
Appearance	Colourless to white crystals
Melting Point	108-111 °C (decomp)
HOMO / LUMO	Not available
Absorption	Not available
Fluorescence	Not available

Applications

Formation of SAMs on metal oxide surfaces
Interface engineering for electron and hole transport layers in perovskite solar cells
Used in co-SAM configurations with organic molecules such as Me-4PACz
Defect passivation and perovskite film quality enhancement