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Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)

2.7 wt % dispersion in H2O, low-conductivity grade

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Synonym(s):
PEDOT:PSS, Poly(2,3-dihydrothieno-1,4-dioxin)-poly(styrenesulfonate)
MDL number:
NACRES:
NA.23

grade

low-conductivity grade

Quality Level

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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This Item
483095739332739316
storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

grade

low-conductivity grade

grade

conductive grade

grade

high-conductivity grade

grade

-

composition

PEDOT content, ~0.14%

composition

PEDOT content, 0.5 wt. % , PSS content, 0.8 wt. %

composition

-

composition

-

concentration

2.7 wt % dispersion in H2O

concentration

1.3 wt % dispersion in H2O

concentration

1.1% in H2O

concentration

0.8% in H2O

impurities

<300 ppm Na

impurities

-

impurities

-

impurities

-

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

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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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)
Solar cells made from polymers containing Dithieno (3, 2-b: 2?, 3?-d) pyrrole with different side chain lengths
Gong C, et al.
Solar Energy Materials and Solar Cells, 95(3) (2011)
Advanced Materials, 10, 774-774 null
PEDOT: PSS self-assembled films to methanol crossover reduction in Nafion membranes
Almeida TP, et al.
Applied Surface Science, 323(3) (2014)

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Conducting polymers such as polyaniline, polythiophene and polyfluorenes are now much in the spotlight for their applications in organic electronics and optoelectronics.

In the field of organic printable electronics, such as OLEDs and organic photovoltaics (OPVs), improved organic conducting and semiconducting materials are needed. The progress in two fields is reviewed in this article.

Progress in Organic Thermoelectric Materials & Devices including high ZT values of >0.2 at room temperature by p-type (PEDOT:PSS) & n-type (Poly[Kx(Ni-ett)]) materials are discussed.

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