Hole transport materials

X55

Description:

A high-performance spiro[fluorene-9,9'-xanthene] (SFX) based hole transport material with demonstrated device efficiencies of up to 20.8% in perovskite solar cells.

Full name:

N²,N⁷-bis(4-methoxyphenyl)-N²,N⁷-di(spiro[fluorene-9,9'-xanthen]-2-yl)spiro[fluorene-9,9'-xanthene]-2,7-diamine

Typical properties:

E_ox (DCM) = 0.73 V vs NHE

Hole conductivity = 9.03*10^-4 S cm^-1

λ_abs (DCM) = 406 nm

M_W = 1235.45 g/mol

References:

B. Xu, et al., Chem, 2017, DOI: 10.1016/j.chempr.2017.03.011

X44

Description:

A dopant-free ionic hole transport material suitable for use in perovskite solar cells. By avoiding dopants good stability and improved reproducibility can be achieved. Through the introduction of quarternary amine functional groups permanent charges are incorporated into the material. DN-X06 displays an order of magnitude higher hole conductivity compared to undoped spiro-OMeTAD.

Full name:

3,3'-(2,7-bis(bis(4-methoxyphenyl)amino)-9H-fluorene-9,9-diyl)bis(N-ethyl-N,N-dimethylpropan-1-aminium) bis[bis((trifluoromethyl)sulfonyl)amide]

Typical properties:

E_ox (DCM) = 0.62 V vs NHE

Hole conductivity = 9.03*10^-4 S cm^-1

λ_abs (DCM) = 381 nm

M_W = 1409.44 g/mol

References:

J. Zhang, et al., Adv. Energy Mater, 2017, DOI: 10.1002/aenm.201602736

Poly(triaryl amine)

Description:

Description: p-Type polymeric semiconductor used in perovskite solar cells, OLEDs and other organic electronics applications. In perovskite solar cells it has been used with great success, enabling efficiencies in excess of 20%. More recently, it has also been shown that PTAA plays an important part in making highly stable perovskite solar cells by preventing metal atoms from the electrode from diffusing into the perovskite.

Full name:

Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine]

Alternative name:

PTAA

CAS number:

1333317-99-9

Typical properties:

M_n = 22000 g/mol

References:

Michael Saliba, et al., Science, 2016, DOI: 10.1126/science.aah5557

Woon Seok Yang, et al., Science, 2015, DOI: 10.1126/science.aaa9272

Jin Hyuck Heo, et al., Nature Photonics, 2013, DOI: 10.1038/nphoton.2013.80

X59

Description:

X59 is a high-performance hole transport material that has proven itself as an economical replacement for spiro-OMeTAD in perovskite solar cells with a demonstrated efficiency of 19.8%.

Full name:

N²,N²,N⁷,N⁷-tetrakis(4-methoxyphenyl)spiro[fluorene-9,9'-xanthene]-2,7-diamine

CAS number:

2095034-97-0

Typical properties:

E_ox (DCM) = 0.65 V vs. NHE

Hole mobility = 5.5*10^-5 cm² V^-1 s^-1

λ_abs (PhMe) = 387 nm

M_W = 786.93 g/mol

References:

Dongqin Bi, et al., Nano Energy, 2016, DOI: 10.1016/j.nanoen.2016.03.020

X60

Description:

X60 is a high-performance hole transport material highly that has proven itself as an economical replacement for spiro-OMeTAD in both perovskite and solid-state dye-sensitized solar cells with demonstrated efficiencies of 19.8 and 7.3% respectively.

Full name:

octakis(4-methoxyphenyl)spiro[fluorene-9,9'-xanthene]-2,2',7,7'-tetraamine)

CAS number:

1887794-22-0

Typical properties:

E_ox (DCM) = 0.65 V vs. NHE

Hole mobility = 1.9*10^-4 cm² V^-1 s^-1

λ_abs (PhMe) = 389 nm

M_W = 1241.45 g/mol

References:

Bo Xu, et al., Energy & Environmental Science, 2016, DOI: 10.1039/C6EE00056H

tris(4-methoxyphenyl)amine

Description:

Tris(4-methoxyphenyl)amine is a small and versatile redox-active molecule which can be employed in both liquid and solid-state solar cells. In DSSCs with liquid electrolyte it can be used together with a metal-based redox couple to enable exceptionally fast dye regeneration, giving easy access to >10% efficiencies. In solid-state solar cells it may be used as a low cost hole-transporting material, either by itself or combined with another material such as P3HT.

Alternative name:

TPAA, TAA, tris(p-anisyl)amine, tris(para-anisyl)amine

CAS number:

13050-56-1

Typical properties:

E_ox (DCM) = 0.85 V vs. NHE

M_W = 335.40 g/mol

References:

J. Phys. Chem. C 2012, 116, 18070-18078, DOI: 10.1021/jp3052449

Chem. Mater., 2001, 13 (11), pp 4105-4111, DOI: 10.1021/cm010281p

Nature Commun. 7 (2016) 13934, DOI: 10.1038/ncomms13934

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X51

Description:

X51 is a high-performance carbazole-based hole transport material (HTM) suitable for use in DSSC's and perovskite solar cells. In combination with a metal-free dye such as DN-F05, device power conversion efficiencies exceeding that of Spiro-OMeTAD has been achieved.

Full name:

9,9'-([1,1'-biphenyl]-4,4'-diyl)bis(N³,N³,N⁶,N⁶-tetrakis(4-methoxyphenyl)-9H-carbazole-3,6-diamine)

CAS number:

1630723-99-7

Typical properties:

E_ox (DCM) = 0.64 V vs. NHE

Hole mobility = 1.51*10^-4 cm² V^-1 s^-1

λ_abs (DCM) = 365 nm, 307 nm (max)

M_W = 1393.65 g/mol

Reorganization energy = 378 meV (calc.)

References:

• Bo Xu, et al., Adv. Mater., 2014, DOI: 10.1002/adma.201402415

Eversolar^® Spiro-OMeTAD

Description:

Spiro-OMeTAD is the reference hole-transport material for solid-state DSSCs and Perovskite solar cells.

Full name:

2,2',7,7'-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene

CAS number:

207739-72-8

Typical properties:

λ_abs.max (DCM) = 385 nm

M_W = 1225.43 g/mol

Additional information:

Dyenamo is European distributor of Everlight's hole transport materials.

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