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QDot™ PbS Quantum Dots, oleic acid capped

$399.00 – $2,500.00

QDot™ PbS (Lead Sulfide) Quantum Dots, oleic acid capped, absorb light from UV and visible up to the short-wave infrared (SWIR) spectral range. Quantum Dots can also re-emit the light in SWIR range. The absorption/emission profiles can be tuned from 800 to 2200 nm, simply by changing nanoparticle sizes from 2 to 12 nm. This material has outstanding light absorption and photoelectrical properties and is considered the best quantum dot absorber in short-wave infrared (SWIR) photodetectors and image sensors. The material can also be suitable as absorbers in X-ray sensors and solar cells. Or the material can be suitable as infrared emitting inks, probes or used for infrared LEDs.

For specific application convenience, two product lines of QDot™ PbS quantum dots are available:

Absorption (abs) type: the portfolio of products with absorption peaks varying from 800 to 2200 nm (see the specs)
Emission (em) type: the portfolio of products with emission peaks varying from 900 to 1600 nm range (see the specs)

Description

For specific application convenience, two product lines of QDot™ PbS quantum dots are available:

Absorption (abs) type: the portfolio of products with absorption peaks varying from 800 to 2200 nm (see the specs)
Emission (em) type: the portfolio of products with emission peaks varying from 900 t0 1600 nm range (see the specs)

QDot™ PbS QDs, oleic acid capped, can be supplied as a solid paste/powder that is easily soluble in octane or any other non-polar solvents (hexane, toluene, chloroform, chlorobenzene, dichlorobenzene) in a wide range of concentration up to 100-150 mg/mL. Follow the video for the detailed guide how to dissolve the QDot™ PbS powders. PbS QDs in a solution form (octane, toluene or other non-polar solvents) are also available.

This product is also found on Merk/Millipore Sigma.

QDot™ PbS quantum dots with conductive ligands are available: QDot™ PbS quantum dot n-type ink.

QDot™ is a trademark of QUANTUM SOLUTIONS. Contact us to make any requests and questions or buy products online

Technical Data

Downloads

Technical Data Sheet - absorption type

Technical Data Sheet - emission type

Application Notes

QDot™ PbS quantum dots, absorption (abs) type

QDot™ PbS (Lead Sulfide) Quantum Dots absorb light from UV and visible up to the short-wave infrared (SWIR) spectral range. The absorption cut-off profiles can be tuned from 800 to 2500 nm simply by changing the nanoparticle sizes from 2 to 12 nm. This material has outstanding light absorption and photoelectrical properties and is considered the best quantum dot absorber in short-wave infrared (SWIR) photodetectors and image sensors. The material can also be suitable as absorbers in X-ray sensors and solar cells.

These novel solution-based methods for depositing thin films of compound semiconductor materials have made it possible to create artificial nanocrystalline InAs absorbing structures at affordable cost that offer unprecedented possibilities. Unlike epitaxially grown InAs or InGaAs thin films, the quality of quantum dot semiconductors is less dependent on the crystallographic characteristics of substrates and their interfacial relationships ensuring the device architecture flexibility and large-scale manufacturability on 8’’ or 12’’ wafers.

QDot™ PbS quantum dots can be deposited within a QDot™ photodiode stack using spin-coating methods from a colloidal solution. In principle, a QDot™ photodiode stack consists of a substrate, an HTL (hole transport layer), a QDot™ PbS Quantum Dots absorber, an ETL (electron transport layer), and a transparent top electrode.

QDot™ PbS Quantum Dots offer the following advantages:

Solution-processed compound semiconductor nanomaterial to be used in short-wave infrared (SWIR)/near-infrared (NIR) photodetectors and image sensors.
Easy integration within a QDot™ photodiode stack through spin-coating or other printing processes, guaranteeing affordability and manufacturability on large 8’’ or 12’’ wafers.
Broad spectral range availability from 2 to 12 nm with the spectral cut-off from 800 nm to 2500 nm. Unprecedented first excitonic absorption peak accuracy and reproducibility (up to ±5 nm).
Narrow particle size distribution with absorbance FWHM < 100-120 nm and STDV < 5-10%.

QDot™ PbS Quantum Dots (abs type) selection guide

QDot™ PbS Quantum Dots have a broad absorption profile, from UV and visible up to SWIR spectral ranges. QDot™ PbS Quantum Dots can be categorised according to their first excitonic absorption peak position that varies from 800 nm to 2200 nm. Absorption peak is characterised with the absorption FWHM and the peak-to-valley ratio.

QDot™ PbS quantum dots can be supplied as a solid paste/powder form that is easily soluble in octane or any other non-polar solvents (hexane, toluene, chloroform, chlorobenzene, etc.) in a wide range of concentration up to 150 mg/mL. QDot™ PbS quantum dots dispersed in octane, toluene or other non-polar solvents are also available.

Table 1. General specification of QDot™ PbS Quantum Dots (abs type)

Quantum dot core type	PbS
Capping ligand	Oleic acid
Appearance	Black powder - for solid forms Black liquid - for dispersion forms
Form available	Solid/powder: PbS-800-abs, ..., PbS-2200-abs 50 mg/mL in octane or toluene: PbS-800-abs, ..., PbS-1600-abs 10 mg/mL in octane: PbS-800-abs, ..., PbS-2200-abs 10 mg/mL in toluene: PbS-800-abs, ..., PbS-1600-abs
Deposition method	Spin-coating with solid ligand exchange or solution ligand exchange

Table 1. Specification of QDot™ PbS Quantum Dots (abs type)

QDot™ Catalogue Number	Core type	Core size	Absorption peak in SWIR range	FWHM of absorption	Peak-to- valley ratio	Ligand concentration	Max solubility in non-polar solvents (oct (octane), tol (touene), hex (hexane))
PbS-800-abs	PbS	2.9 nm (view)	800 +/- 15 nm	-	> 1.2	40-50 wt%	> 150 mg/mL (oct, tol, hex)
PbS-900-abs	PbS	3.2 nm	900 +/- 15 nm (view)	< 120 nm	> 1.5	35-45 wt%	> 150 mg/mL (oct, tol, hex)
PbS-920-abs	PbS	3.4 nm (view)	920 +/- 15 nm	< 120 nm	> 1.5	35-45 wt%	> 150 mg/mL (oct, tol, hex)
PbS-1000-abs	PbS	3.6 nm (view)	1000 +/- 15 nm	< 120 nm	> 2	35-45 wt%	> 100 mg/mL (oct, tol, hex)
PbS-1100-abs	PbS	4.0 nm (view)	1100 +/- 15 nm (view)	< 120 nm	> 3	30-40 wt%	> 100 mg/mL (oct, tol, hex)
PbS-1200-abs	PbS	4.5 nm (view)	1200 +/- 15 nm (view)	< 120 nm	> 4	30-40 wt%	> 100 mg/mL (oct, tol, hex)
PbS-1300-abs	PbS	5.0 nm (view)	1300 +/- 15 nm (view)	< 120 nm	> 5	30-40 wt%	> 100 mg/mL (oct, tol, hex)
PbS-1400-abs	PbS	5.5 nm	1400 +/- 15 nm (view)	< 120 nm	> 5	25-35 wt%	> 100 mg/mL (oct, tol, hex)
PbS-1420-abs	PbS	5.6 nm (view)	1420 +/- 15 nm (view)	< 120 nm	> 5	25-35 wt%	> 100 mg/mL (oct, tol, hex)
PbS-1500-abs	PbS	6.0 nm (view)	1500 +/- 15 nm	< 120 nm	> 6	25-35 wt%	> 50 mg/mL (oct, tol, hex)
PbS-1520-abs	PbS	6.1 nm	1520 +/- 15 nm (view)	< 120 nm	> 6	25-35 wt%	> 50 mg/mL (oct, tol, hex)
PbS-1600-abs	PbS	6.4 nm (view)	1600 +/- 20 nm (view)	< 120 nm	> 6	20-30 wt%	> 50 mg/mL (oct, tol, hex)
PbS-1700-abs	PbS	7.0 nm (view)	1700 +/- 25 nm (view)	< 150 nm	> 3	20-30 wt%	> 50 mg/mL (oct, hex)
PbS-1800-abs	PbS	7.5 nm (view)	1800 +/- 30 nm (view)	< 200 nm	> 2	15-25 wt%	> 50 mg/mL (oct, hex)
PbS-1900-abs	PbS	8.2 nm (view)	1900 +/- 50 nm (view)	< 220 nm	> 1.5	15-25 wt%	< 50 mg/mL (oct, hex)
PbS-2000-abs	PbS	9.1 nm (view)	2000 +/- 50 nm (view)	< 220 nm	> 1.5	< 20 wt%	< 50 mg/mL (oct, hex)
PbS-2100-abs	PbS	10 nm (view)	2100 +/- 50 nm (view)	-	-	< 20 wt%	< 50 mg/mL (oct, hex)
PbS-2200-abs	PbS	12 nm (view)	2200 +/- 50 nm (view)	-	-	< 20 wt%	< 50 mg/mL (oct, hex)

QDot™ PbS Quantum Dots with different solvents, concentrations, and absorptions peaks are available upon request. QDot™ PbS quantum dots with conductive ligands are available: QDot™ PbS quantum dot n-type ink.

First excitonic absorption peak profiles of QDot™ PbS Quantum Dots (abs type)

TEM images of QDot™ PbS Quantum Dots (click to view TEM images and particle size distribution for all products)

QDot™ PbS quantum dots, emission (em) type

QDot™ PbS (Lead Sulfide) Quantum Dots absorb light from UV and visible up to infrared spectral range and re-emit in infrared range. The emission wavelenghts can be precisesly tuned from 900 to 1600 nm simply by changing the nanoparticle sizes from 3 to 6 nm. This material has outstanding photoluminescnce properties and can be suitable as infrared emitting inks, probes or used for infrared LEDs.

QDot™ PbS Quantum Dots offer the following advantages:

Infrared emitters with the tuneable emission peaks from 900 to 1600 nm. Unprecedented absorption/emission peaks accuracy and reproducibility (up to ±15 nm).
Narrow particle size distribution with FWHM of emission < 120 nm and STDV < 5-10%.

QDot™ PbS Quantum Dots (em type) selection guide

QDot™ PbS Quantum Dots have a broad absorption profile, from UV and visible up to infrared spectral ranges and emission in the ranges 900 - 1600 nm. QDot™ PbS Quantum Dots, emissive types, can be categorised according to their emission peak position that varies from 900 nm to 1600 nm. Emission peak is characterised with the emission FWHM and stokes shift. QDot™ PbS quantum dots can be supplied as a solid paste/powder form that is easily soluble in octane or any other non-polar solvents (hexane, toluene, chloroform, chlorobenzene, etc.) in a wide range of concentration up to 150 mg/mL. QDot™ PbS quantum dots readily dispersed in octane, toluene or other non-polar solvents are also available.

Table 3. General specification of QDot™ PbS Quantum Dots (em type)

Quantum dot core type	PbS
Capping ligand	Oleic acid
Appearance	Black powder - for solid forms Black liquid - for dispersion forms
Form available	Solid/powde 50 mg/mL in octane or tolune 10 mg/mL in octane or tolune

Table 4. Specification of QDot™ PbS Quantum Dots (em type)

QDot™ Catalogue Number	Core type	Core size	Emission peak (Abs=1)	FWHM of emission	PLQY	Stokes shift	Ligand concentration
PbS-900-em	PbS	2.7 nm	900 +/- 25 nm	< 130 nm	>40%	120 nm	40-50 wt%
PbS-1000-em	PbS	3.0 nm	1000 +/- 25 nm	< 130 nm	>40%	110 nm	35-45 wt%
PbS-1100-em	PbS	3.3 nm	1100 +/- 25 nm	< 130 nm	>30%	100 nm	35-45 wt%
PbS-1200-em	PbS	3.8 nm	1200 +/- 25 nm	< 130 nm	>20%	90 nm	30-40 wt%
PbS-1300-em	PbS	4.5 nm	1300 +/- 25 nm	< 140 nm	>20%	80 nm	30-40 wt%
PbS-1400-em	PbS	5 nm	1400 +/- 25 nm	< 140 nm	>15%	70 nm	30-40 wt%
PbS-1500-em	PbS	5.5 nm	1500 +/- 25 nm	< 140 nm	>10%	50 nm	25-35 wt%
PbS-1600-em	PbS	6 nm	1600 +/- 25 nm	< 140 nm	>10%	40 nm	25-35 wt%

QDot™ PbS Quantum Dots with different solvents, concentrations, and emission peaks are available upon request.

Emission profiles of QDot™ PbS Quantum Dots (em type)

PLQY map of QDot™ PbS Quantum Dots (em type)

Notes for handling

Shelf Life 12 months. Shipping and storage temperature 4-25 °C. Store in DARK conditions, in original packaging or in airtight, sealed packaging inside a glovebox. Repackage in a glovebox only. Avoid contact with air. Process inside the glovebox or another enclosed inert gas environment.

PbS QDs solids are easily soluble in octane, or any other non-polar solvents (hexane, toluene, chloroform, chlorobenzene, dichlorobenzene) in a wide range of concentrations up to 100-150 mg/mL (see Table 1). Dissolve in a glove box only. Use anhydrous solvents only. Filter the solution by PTFE or PVDF filters before processing. Follow the video for the detailed guide how to dissolve the QDot™ PbS powders.

Pricing

QDot™ PbS Quantum Dots according to absorption (abs) peak:

Catalog Number	Description	Quantity	Price
QDot™ PbS-800-abs	PbS quantum dots, 800 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-900-abs	PbS quantum dots, 900 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-920-abs	PbS quantum dots, 920 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1000-abs	PbS quantum dots, 1000 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1100-abs	PbS quantum dots, 1100 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1200-abs	PbS quantum dots, 1200 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1300-abs	PbS quantum dots, 1300 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1400-abs	PbS quantum dots, 1400 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1420-abs	PbS quantum dots, 1420 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1500-abs	PbS quantum dots, 1500 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1520-abs	PbS quantum dots, 1520 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1600-abs	PbS quantum dots, 1600 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1700-abs	PbS quantum dots, 1700 nm absorption peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $2,500.00
QDot™ PbS-1800-abs	PbS quantum dots, 1800 nm absorption peak, solid or in solvent (octane)	100 mg 300 mg 1 g	$399.00 $899.00 $2,500.00
QDot™ PbS-1900-abs	PbS quantum dots, 1900 nm absorption peak, solid or in solvent (octane)	100 mg 300 mg 1 g	$399.00 $899.00 $2,500.00
QDot™ PbS-2000-abs	PbS quantum dots, 2000 nm absorption peak, solid or in solvent (octane)	100 mg 300 mg 1 g	$399.00 $899.00 $2,500.00
QDot™ PbS-2100-abs	PbS quantum dots, 2100 nm absorption peak, solid	300 mg 1 g	$899.00 $2,500.00
QDot™ PbS-2200-abs	PbS quantum dots, 2200 nm absorption peak, solid	300 mg 1 g	$899.00 $2,500.00

QDot™ PbS Quantum Dots according to emission (em) peak:

Catalog Number	Description	Quantity	Price
QDot™ PbS-900-em	PbS quantum dots, 900 nm emission peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1000-em	PbS quantum dots, 1000 nm emission peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1100-em	PbS quantum dots, 1100 nm emission peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1200-em	PbS quantum dots, 1200 nm emission peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1300-em	PbS quantum dots, 1300 nm emission peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1400-em	PbS quantum dots, 1400 nm emission peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1500-em	PbS quantum dots, 1500 nm emission peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00
QDot™ PbS-1600-em	PbS quantum dots, 1600 nm emission peak, solid or in solvent (toluene or octane)	100 mg 300 mg 1 g	$399.00 $899.00 $1,700.00