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PTZ-CPA

Product Name: PTZ-CPA, (E)-(2-(4-(10H-phenothiazin-10-yl)phenyl)-1-cyanovinyl)phosphonic acid
Catalog Number: ALCM-SAM003
CAS Number: N/A

Product Description

Chemical Structure of PTZ-CPA

PTZ-CPA is a high-performance self-assembled monolayer (SAM) material developed for use as a hole transport or extraction layer in perovskite and organic solar cells. The molecular architecture of PTZ-CPA features a cyanovinyl phosphonic acid (CPA) anchor, a rigid phenylene spacer, and a phenothiazine (PTZ) electron-donating moiety. This amphiphilic structure promotes spontaneous self-assembly on indium tin oxide (ITO) surfaces, forming a dense, superwetting monolayer that improves film formation and interfacial contact.

Compared to conventional carbazole-based materials such as MeO-2PACz, PTZ-CPA offers a stronger molecular dipole and superior alignment with the perovskite valence band, contributing to more effective charge extraction. It is also compatible with low-concentration solution processing and scalable fabrication, serving as a high-performance alternative to PEDOT:PSS.

Key Features

Amphiphilic SAM molecule for efficient hole transport
Strong molecular dipole for improved energy level alignment
Enhances perovskite crystallinity and passivates interfacial defects
Compatible with both small- and large-area device fabrication
Processable from dilute ethanol solutions
Suitable replacement for PEDOT:PSS in printable photovoltaic systems

Product Information

Item	Details
CAS Number	N/A
Catalog Number	ALCM-SAM003
Synonyms	(E)-(2-(4-(10H-phenothiazin-10-yl)phenyl)-1-cyanovinyl)phosphonic acid
Chemical Formula	C21H15N2O3PS
Molecular Weight	406.39 g/mol
Purity	≥ 98% (HPLC)
Appearance	Yellow to light brown powder
Melting Point	TGA: Td = 377 °C (5% weight loss)
HOMO / LUMO	HOMO = - 5.5 eV, LUMO = - 2.43 eV
Absorption	λmax=363 nm (in THF)
Fluorescence	Not available

Applications

Hole transport or extraction layer in p–i–n perovskite solar cells
Interface engineering in organic photovoltaic (OPV) devices
Viable replacement for PEDOT:PSS in flexible and solution-processable photovoltaic devices
Surface modifier for improved wettability and uniform film deposition on ITO