FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code M2416A1-250mg
Price $238 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


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) 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 TaTm

High purity sublimed material

>99.0%

Worldwide shipping

Worldwide shipping

Quick and reliable shipping

Hole-transport layer

Hole-transport layer

(HTL) material (in organic solar cells)

Improving charge seperation 952431-34-4

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* λmax 390 nm
Fluorescence λem (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

TaTm - 952431-34-4 - N4,N4,N4'',N4''-tetra([1,1'-biphenyl]-4-yl)-[1,1':4',1''-terphenyl]-4,4''-diamine chemical structure
N4,N4,N4'',N4''-tetra([1,1'-biphenyl]-4-yl)-[1,1':4',1''-terphenyl]-4,4''-diamine (TaTm) chemical structure, 952431-34-4

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 - 952431-34-4 - N4,N4,N4'',N4''-tetra([1,1'-biphenyl]-4-yl)-[1,1':4',1''-terphenyl]-4,4''-diamineTaTm MSDS Sheet

Literature and Reviews

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. Vacuum Deposited Triple-Cation Mixed-Halide Perovskite Solar Cells, Adv. Energy Mater., 8 (14), 1703506 (2018); DOI: 10.1002/aenm.201703506.
  6. 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.
  7. 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.
  8. 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.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

Return to the top