TaTm

CAS Number 952431-34-4

High Purity Sublimed Materials, Materials, Semiconducting Molecules

Hole Transport Layer Material Triarylamine with a Linear Terphenyl Core

High purity sublimed electron rich semiconducting material in application of p-i-n perovskite solar cells with low non-radiative recombination

N4,N4,N4'',N4''-tetra([1,1'-biphenyl]-4-yl)-[1,1':4',1''-terphenyl]-4,4''-diamine (TaTm), CAS number 952431-34-4, is a triarylamine with a linear terphenyl core and four biphenyl side arms. With high thermal stability and excellent intrinsic hole mobility of 4 × 10^-3 cm² V^-1 s^-1, TaTm is electron rich and it is normally used as a hole transport layer (HTL) material in organic electronic devices.

High purity sublimed material

>99.0%

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Hole-transport layer

(HTL) material (in organic solar cells)

Improving charge seperation

In vacuum processed p-i-n perovksite solar cells

Together with MoO₃, TaTm is widely used in vacuum processed p-i-n perovksite solar cells as hole transport bilayers to improve the charge separation. Annealing the bilayer at high temperature is crucial to obtain high rectification with low non-radiative recombination, owing to the increase of the electrode work function and the formation of an ohmic interface with TaTm.

General Information

CAS number	952431-34-4
Chemical formula	C₆₆H₄₈N₂
Molecular weight	869.1 g/mol
Absorption*	λ_max 390 nm
Fluorescence	λ_em (n.a.)
HOMO/LUMO	HOMO = 5.40 eV, LUMO = 2.35 eV
Synonyms	N4,N4,N4'',N4''-tetra([1,1'-biphenyl]-4-yl)-[1,1':4',1''-terphenyl]-4,4''-diamine
Classification / Family	Triarylamine derivatives, Hole transport layer (HTL) materials, Electron blocking layer (EBL), p-i-n Perovksite solar cells ,Sublimed materials.

Product Details

Purity	Sublimed* >99.0% (HPLC)
Melting point	n.a.
Appearance	crystals/powder

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

Pricing

Grade	Product Code	Quantity	Price
Sublimed (>99.0% purity)	M2416A1	250 mg	£190
Sublimed (>99.0% purity)	M2416A1	500 mg	£300
Sublimed (>99.0% purity)	M2416A1	1 g	£480

MSDS Documentation

TaTm MSDS Sheet

Literature and Reviews

Efficient Vacuum Deposited P-I-N Perovskite Solar Cells by Front Contact Optimization, A. Babaei et al., Front. Chem., 7, 936 (2020); DOI: 10.3389/fchem.2019.00936.
Performance enhancement using an embedded nano-pyramid in a perovskite solar cell with TaTm as a hole transport layer, S. Bhattarai et al., New J. Chem., 47, 18332-18340 (2023); DOI: 10.1039/D3NJ03665K.
High voltage vacuum-processed perovskite solar cells with organic semiconducting interlayers, A. Babaei et al., RSC Adv., 10, 6640-6646 (2020); DOI: 10.1039/D0RA00214C.

When JV Curves Conceal Material Improvements: The Relevance of Photoluminescence Measurements in the Optimization of Perovskite Solar Cells, C. Dreessen et al., Adv. Optical Mater., 2301019 (2023); DOI: 10.1002/adom.202301019.
Vacuum Deposited Triple-Cation Mixed-Halide Perovskite Solar Cells, Adv. Energy Mater., 8 (14), 1703506 (2018); DOI: 10.1002/aenm.201703506.
Low Temperature, Vacuum-Processed Bismuth Triiodide Solar Cells with Organic Small-Molecule Hole Transport Bilayer, Energy Technol., 9, 2100661 (2021); DOI: 10.1002/ente.202100661.
Combinatorial Vacuum-Deposition of Wide Bandgap Perovskite Films and Solar Cells, I. Susic et al., Adv. Mater. Interfaces, 10, 2202271 (2023); DOI: 10.1002/admi.202202271.
A negative polaron resistant p-type host for extended lifetime in deep blue phosphorescent organic light-emitting diodes, J. Mater. Chem. C, 8, 5131-5136 (2020); DOI: 10.1039/C9TC06702G.