Inks and Pastes

IRASOL, in collaboration with partner labs, has developed various inks and pastes, mainly used and optimized for solar cells fabrication. Inks can be applied on the surface using spin coating, spray and other printing techniques. Pastes can be applied mainly by blade coating or screen printing.

Metal inks and pastes: Gold ink Tetrachloroauric acid | Silver ink | Silver nanowire ink | Pt paste

Carbon inks and pastes: Graphene oxide ink Carbon paste

Metal oxide pastes: TiO2 Paste- Transparent | TiOPaste- Reflector Anatase | TiO2 Paste- Reflector Rutile | TiO2 Paste- Reflector Rutile@SiO2

Metal oxide inks: Crystalline aqueous TiO2 sol | Amorphous aqueous TiO2 sol | Acidic aqueous TiOsol | Crystalline TiO2 sol in ethanol

Non-oxide inks and pastes: CuInS2 ink

 

Gold ink

 

 

Au stable ink to deposit Au films

 

Gold ink is a stable dispersion of gold nanoparticles dispersed in toluene. This ink can be used for deposition of Au electrodes for perovskite solar cells or other devices.

 

 

Nanoparticles: Au

Particle Size: Avg. 5-6 nm

Concentration: 15%

Physical Form: Liquid dispersion

Color: Dark red-brown

Solvent: Toluene

Storage: 2-8 °C

 

Packaging and Order Number

 

INK-50AU-1ML

1 mL

 

 

 

 

 

 

 

 

 

Contact for price

 

 

Tetrachloroauoric acid (HAuCl4)

 

 

Au precursor solution

 

HAuClis the conventional source of Au, for synthesis of Au nanoparticles or thermal deposition of Au film.

 

 

Material: HAuCl4

Assay: >99.5%

Concentration: 100 mg/ml

Physical Form: Liquid solution

Color: Yellow

Solvent: H2O

 

Packaging and Order Number

 

PRE-HAUCL-10ML

10 mL

 

 

 

 

 

 

 

 

 

Contact for price

 

 

Silver ink

 

 

Silver conductive ink for wiring and metal contact 

 

Silver ink consists of a concentrated Ag nanowire dispersion in H2O, suitable for printing conductive wires and films.

 

 

Particles: Ag Nanowires

Particle Size: D~100 nm, L <10 µm

Concentration: 25-30 wt%

Physical Form: Liquid dispersion

Color: Gray

Solvent: H2O

Shelf Life: 2 month

Curing Temperature/Time: 100°C/20 min

Resistivity (/sq/40µm):  ≤85 at 25°C, ≤ 65 at 100°C,  ≤40 at 250°C

Storage: < 5 °C

 

Packaging and Order Number

 

INK-100AG-1G

1 g

 

INK-100AG-5G

5 g

 

INK-100AG-10G

10 g

 

 

 

Contact for price

 

 

Silver nanowire ink

 

 

Silver nanowire ink to deposit transparent conductive electrodes 

 

Silver nanowire ink consists of a dilute Ag nanowire dispersion in ethanol, designed for deposition of transparent conductive films. It can be sprayed or spin coated on a substrate.

 

 

Particles: Ag nanowires

Particle Size: D ~100 nm, L >10 µm

Concentration: 0.3 wt% 

Physical Form: Liquid dispersion

Color: Gray

Solvent: Ethanol

 

Packaging and Order Number

 

INK-100AGW-10ML

10 mL

 

INK-100AGW-10ML

20 mL

 

 

 

 

 

 

Contact for price

 

 

Pt Paste

 

 

Pt containing paste to deposit Pt nanoparticle electrodes

 

Pt paste contains H2PtCl6 as Pt source in a paste containing solvent and binder. The paste can be easily applied by blade coating or screen printing. After thermal treatment a uniform thin layer of Pt nanoparticles is formed on the surface. Conventionally, Pt paste is applied on glass/FTO substrate acting as counter electrode of dye sensitized solar cells with high electrocatalytic activity.

 

 

Pt source: H2PtCl6

Concentration: 0.3%

Physical Form: Paste

Color: light Yellow

Storage: Dark 2-8 °C

 

 

Packaging and Order Number

 

PST-PT-1G

1 g

 

PST-PT-5G

5 g

 

PST-PT-10G

10 g

 

PST-PT-20G

20 g

 

 

 

Contact for price

 

 

Graphene oxide ink

 

 

Stable GO dispersion for high quality GO deposition

 

The graphene oxide (GO) ink consist of high quality GO sheets dispersed in H20.
It easily forms thin and uniform films of GO on the surface using spin coating, spray or other wet deposition methods.

 

 

Particles: Graphene oxide

Sheet Size: D>10 µm

Sheet thickness: mostly 1 monolayer

Concentration: 1 mg/mL

Physical Form: Liquid dispersion

Color: Light yellow

Solvent: H2O

 

Packaging and Order Number

 

INK-50GO-20ML

20 mL

 

 

 

 

 

 

 

 

 

Contact for price

 

 

Carbon Paste

 

 

Carbon paste as a conductive electrode

 

Carbon paste contains graphite and carbon black as carbon source, and forms a paste using additives, binders in a solvent. The paste can be applied by blade coating or screen printing. By thermal treatment, at around 100 °C the solvent is
evaporated and at below 400 °C the binder is removed.

 

 

Carbon source: Graphite, carbon black

Concentration of carbon: 20%

Physical Form: Paste

Color: black

Storage: 2-8 °C

 

 

Packaging and Order Number

 

PST-100C-1G

1 g

 

PST-100C-5G

5 g

 

PST-100C-10G

10 g

 

PST-100C-20G

20 g

 

 

 

Contact for price

 

 

Nanocrystal TiO2 Paste – Transparent

 

 

 Ideal paste for meso-TiOdeposition

 

TiOnanocrystal paste contains nanocrystals with narrow range of size which form
a very uniform and transparent film of mesoporous TiO2. The paste can be applied as thick film by blade coating or screen printing for dye sensitized solar cells. For perovskite solar cells, the paste is first diluted and deposited as a thin film using spin coating. Thermal post-treatment is required after deposition. For thick films, a short ethanol vapor treatment helps level off the wet film. By thermal treatment, at around 100 °C the solvent is evaporated, at below 400 °C the binder is removed and at >500 °C nanocrystals are sintered into a sufficiently good conductivity film.

 

 

Nanoparticles: TiO2 – Anatase

Particle Size: Around 20 nm

Concentration: 18%

Physical Form: Paste

Color: Cream

Storage: 2-8 °C

 

 

Packaging and Order Number

 

PST-20T-1G

1 g

 

PST-20T-5G

5 g

 

PST-20T-10G

10 g

 

PST-20T-20G

20 g

 

 

 

Contact for price

 

 

TiO2 Paste – Reflector Anatase

 

 

Paste of anatase TiO2 particles for reflection layer of DSSCs

 

This type of TiO2 paste contains relatively large anatase TiOparticles, formed as a paste using a solvent and binder. The size of particles is larger than 100 nm and produce high light reflection, which is required for a reflector layer in dye sensitized solar cells. The paste can be applied by blade coating or screen printing. By thermal treatment, at around 100 °C the solvent is evaporated, at below 400 °C the binder is removed and at >500 °C nanocrystals are sintered into a sufficiently good conductivity film.

 

 

Nanoparticles: TiO2 – Anatase

Particle Size: >100 nm

Concentration: 28 wt%

Physical Form: Paste

Color: White

Storage: 2-8 °C

 

 

Packaging and Order Number

 

PST-300A-1G

1 g

 

PST-300A-5G

5 g

 

PST-300A-10G

10 g

 

PST-300A-20G

20 g

 

 

 

Contact for price

 

 

TiO2 Paste – Reflector Rutile

 

 

Paste of rutile TiO2 particles for reflection layer of DSSCs

 

This type of TiO2 paste contains relatively large rutile TiO2 particles, formed as a paste using a solvent and binder. The particles size distribution is broad, with typical size of about 300 nm. Rutile TiO2 has higher refractive index compared to anatase TiO2, hence showing higher reflection of light. However, in dye sensitize solar cells the smaller bandgap of rutile may reduce the performance of device. The paste can be applied by blade coating or screen printing. By thermal treatment, at around 100 °C the solvent is evaporated, at below 400 °C the binder is removed and at >500 °C particles are sintered. 

 

 

Particles: TiO2 – Rutile

Particle Size: Around 300 nm

Concentration: 28 wt%

Physical Form: Paste

Color: White

Storage: 2-8 °C

 

 

Packaging and Order Number

 

PST-300R-1G

1 g

 

PST-300R-5G

5 g

 

PST-300R-10G

10 g

 

PST-300R-20G

20 g

 

 

 

Contact for price

 

 

TiO2 Paste – Reflector Rutile@SiO2

 

 

Paste of rutile SiO2 coated TiO2 particles for reflection layer of
DSSCs

 

This TiOpaste is essentially similar to rutile TiO2 paste, however, the rutile particles are coated using a thin layer of SiO2, in order to inhibit the electrical conductivity. In dye sensitized solar cells, a rutile@SiO2 reflector layer only shows optical effect, and due to being an insulator, plays no electrical role in the solar cell device. The paste can be applied by blade coating or screen printing. By thermal treatment, at around 100 °C the solvent is evaporated, at below 400 °C the binder is removed and at >500 °C nanocrystals are sintered into a sufficiently good conductivity film.

 

 

Particles: TiO2 –Rutile coated with SiO2

Particle Size: 250-500 nm, SiO2 shell: 70 nm

Concentration: 28 wt%

Physical Form: Paste

Color: White

Storage: 2-8 °C

 

 

Packaging and Order Number

 

PST-400RS-1G

1 g

 

PST-400RS-5G

5 g

 

PST-400RS-10G

10 g

 

PST-400RS-20G

20 g

 

 

 

Contact for price

 

 

Crystalline aqueous TiO2 sol

 

 

Nanocrystal TiOstable neutral aqueous sol with no dispersing agent 

 

Crystalline aqueous TiO2 sol is a dispersion of TiO2 nanoparticles in H2O with neutral pH. The sol is electrostatically stable, without any carbon containing dispersing agents. It forms uniform and adhering films due to the highly sol-gel active surface of nanoparticles.

 

 

Nanoparticles: TiO2 – anatase

Particle shape: spindle shape

Particle Size: Around 30 nm (DLS)

Concentration: 1 wt%

Physical Form: Liquid dispersion

Color: yellow

Solvent: H2O

pH:  neutral

Ion conductivity:  200 mS/cm

Dispersing agent: No

 

 

Packaging and Order Number

 

SOL-30TC-20ML

20 mL

 

SOL-30TC-100ML

100 mL

 

SOL-30TC-200ML

200 mL

 

 

 

 

 

 

Contact for price

 

 

Amorphous aqueous TiO2 sol

 

 

Amorphous TiOstable neutral aqueous sol with no dispersing agent 

 

Amorphous aqueous TiO2 sol is a dispersion of very small TiO2 nanoparticles in H2O with neutral pH. The sol is electrostatically stable, without any carbon containing dispersing agents. It forms uniform and adhering films due to the highly sol-gel active surface of nanoparticles.

 

 

Nanoparticles: TiO2 – anatase

Particle Size: <10 nm

Concentration: 1 wt%

Physical Form: Liquid dispersion

Color: Slightly Yellow

Solvent: H2O

pH:  neutral

Ion conductivity:  200 mS/cm

Dispersing agent: No

 

 

Packaging and Order Number

 

SOL-10TA-20ML

20 mL

 

SOL-10TA-100ML

100 mL

 

SOL-10TA-200ML

200 mL

 

 

 

 

 

 

Contact for price

 

 

Acidic aqueous TiO2 sol

 

 

Acidic dispersion of small TiO2 nanoparticles 

 

Acidic aqueous TiO2 sol is a dispersion of small amorphous TiOnanoparticles in H2O with low pH. It can be used to form thin films of TiO2.

 

 

Nanoparticles: TiO2– amorphous

Particle Size: <10 nm (DLS)

Concentration: 1 wt%

Physical Form: Liquid dispersion

Color: transparent

Solvent: H2O

pH:  <2

 

 

Packaging and Order Number

 

SOL-10TAC-20ML

20 mL

 

SOL-10TAC-100ML

100 mL

 

SOL-10TAC-200ML

200 mL

 

 

 

 

 

 

Contact for price

 

 

Crystalline TiO2 sol in ethanol

 

 

Ethanol dispersion of highly crystalline TiO2 nanoparticles  

 

Crystalline TiOsol in ethanol is a dispersion of TiO2 nanoparticles in ethanol. Nanoparticles are relatively mono-dispersed, with high crystallinity. It can be used to form thin films of highly crystalline TiOnanoparticles.

 

 

Nanoparticles: TiO2– Anatase

Particle Size: Around 20 nm

Concentration: 0.1 wt%

Physical Form: Liquid dispersion

Color: White

Solvent: Ethanol

 

Packaging and Order Number

 

SOL-20TET-20ML

20 mL

 

SOL-20TET-100ML

100 mL

 

SOL-20TET-200L

200 mL

 

 

 

Contact for price

 

 

CuInSink

 

 

Stable dispersion to deposit high performance HTM layers

 

CuInSnanoparticles dispersed in chlorobenzene can be applied with high uniformity using spin coating. It is a p-type semiconductor and has been successfully used as an inorganic hoe transporting material (HTM) of perovskite solar cells. 

 

 

Nanoparticles: CuInS2

Particle Size: ~18 nm (DLS Analysis)

Concentration: 30 mg mL-1

Physical Form: Liquid dispersion

Color: Black

Solvent: Chlorobenzene

 

Packaging and Order Number

 

INK-20CIS-10ML

10 mL

 

 

 

 

 

 

 

 

 

Contact for price

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