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560596

Sigma-Aldrich

PEDOT:PSS

low-conductivity grade, 2.7 wt. % aqueous dispersion

Synonym(s):

PEDOT:PSS, Poly(2,3-dihydrothieno-1,4-dioxin)-poly(styrenesulfonate)

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About This Item

MDL number:
MFCD07371079
UNSPSC Code:
12352103
NACRES:
NA.23

Key Documents

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Product Name

Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), 2.7 wt % dispersion in H2O

description

Electrodes

Quality Level

100

composition

PEDOT content, ~0.14%
PSS content, ~2.6%

concentration

2.7 wt % dispersion in H2O

impurities

<300 ppm Na

particle size

<200 nm, coeff var >95%

pH

1.2-1.8

conductivity

~1E-5 S/cm

viscosity

<20 cP(20 °C)

storage temp.

2-8°C

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General description

A conducting polymer such as poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) anions (PEDOT/PSS) is widely used in various organic optoelectronic devices. PEDOT: PSS is a blend of cationic polythiopene derivative, doped with a polyanion. High electrical conductivity and good oxidation resistance of such polymers make it suitable for electromagnetic shielding and noise suppression. Thus, the polymer film was found to possess high transparency throughout the visible light spectrum and even into near IR and near UV regions, virtually 100% absorption from 900-2,000 nm. No absorption maximum from 400-800 nm. Conductive polymer blend. Impact of small electric and magnetic fields on the polymer was studied.
Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) is an intrinsically conducting polymer (ICP) that is prepared by blending poly(3,4-ethylenedioxythiophene) (PEDOT) and sodium poly(styrenesulfonate) (PSS). It is an aqueous emulsion in which PEDOT is positively charged and the PSS is the counter ion (negatively charged). It can act as an anode or a cathode material based on the application. It can be spin-coated on different substrates at 1000-5000 rpm.
Preferably applied by spin-coating. Filtration of the dispersion through a 0.45 μm memberane filter is recommended before use. The coatings are dried at a maximum temperature of 200 °C for 1 minute, but a temperature between 50 °C and 150 °C is usually sufficient. The optimal thickness of the dried layer is in the range of 50-250 nm.

Application

PEDOT:PSS and poly(9-vinylcarbazole) (PVK) can be cross-linked to form a multi-layered organic light emitting diodes. Proton exchange membranes such as Nafion 212 can be coated layer by layer with PEDOT:PSS and poly(allylamine hydrochloride) (PAH).
Useful as an interfacial hole injection layer in OLED and PLED devices to lower operating voltages, increase luminescence efficiency, and enhance display lifetimes.
Virtually 100% absorption from 900-2,000 nm. No absorption maximum from 400-800 nm. Conductive polymer blend.

Features and Benefits

Reduced mean particle size with a tighter distribution of sizes allows for the creation of a smooth surface on the ITO electrode, and so electric "shorts" in LED devices can be reduced. Greatly reduced inherent conductivity reduces the occurrence of "cross-talk" in very small pixel (less than 10 micron) matrix array displays.

Packaging

Packaged in poly bottles

pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ6255
MKCM4815
MKCK7724
MKCD3719
MKCD7258

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Find documentation for the products that you have recently purchased in the Document Library.

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Opt. Mater., 9, 125-125 (1998)
Surface initiated oxidative crosslinking of a polymeric hole transport material for improved efficiency and lifetime in soluble organic light-emitting diodes
Jeon SK, et al.
Organic Electronics, 38(3) (2016)
Applied Physics Letters, 71, 34-34 (1997)
Synthetic Metals, 87, 171-171 (1997)
Conducting polymer electrodes for gel electrophoresis
Bengtsson K, et al.
PLoS ONE, 9(2), e89416-e89416 (2014)
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