Product Data Sheet
Premium Grade Quantum Dots
Navillum Nanotechnologies (Navillum) manufactures semiconductor
quantum dots (QDs) using our patented, novel manufacturing synthesis that yields consistently high quality QDs which meet the full
rec.2020 color gamut required for the display quality required for
the next generation of high definition displays. (Figure 1) Rec.2020
is the International Telecommunication Union (ITU) Recommendation BT.2020 (rec.2020). ITU is one of several organizations that sets
the standards upon which the production, broadcast, and display
industries rely to ensure that produced content is being accurately
transmitted and faithfully displayed. Navillum’s will work with you to
develop QDs that meet your exacting performance specifications for
your next generation display products.
Figure 1. Rec.2020 is a new color standard for UHD TV that will be
implemented in a three-phase roadmap that has the standard fully
implemented by the year 2020.
Navillum’s QD synthesis process is a thermodynamically driven, low temperature method
of producing consistent, high quality QDs that
eliminates the current limitations of the high
temperature synthesis methods. The Navillum
synthesis relies, on a thermodynamic-equilibrium
between nanoparticle growth and nanoparticle
dissolution processes, which provides us with a
high degree of control over net QD growth, and
formation.
Figure 2. Effect of emitter spectral emission on bandwidth (Full
Width Half Maximum, FWHM) on the color gamut; narrower
FWHM means better display color.
The advantage of producing QDs at close to absolute thermodynamic equilibrium is that it results in the formation of particularly high-quality
QD crystals characterized by minimal defects
such as inclusions, occlusions, distortions and
faults. It also facilitates maximum control of net
crystal growth rate and tight, crystal-size distribution. These characteristics translate into highly desirable, narrow-bandwidth emission (low
PL-FWHM), as shown in (Figure 2), and bright
photoluminescent QDs whose colors are pure
and vivid.
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Figure 3. Navillum’s QDs produce pure and vivid color with superior performance to current QD products.
Navillum QDs have superior quality
and performance characteristics:
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Narrow size distributions
Bright Photoluminescence
Tuneable photoluminescence peak-center wavelengths at the edge or range
Narrow photoluminescence peaks
Symmetrical emission peaks with no skew, leptokurtosis i.e., “fat tails”
Typical Product Specifications
Product Name
CdSe Quantum Dot
Catalogue Number
CE-(Insert Wavelength Required, e.g. CE-535)
Concentration
10-4M
Ligand Surface Group
ODA
Solvent(s)
Hexanes or Toluene
Emission Peak / Spectrum
Range
Green 520-535 +/-2nm
Emission Tolerance
<2nm
Storage
Keep out of direct sunlight
Shelf Life
12 months
FWHM
<30nm
Red 600-635 +/=2nm
<30nm
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Cadmium-Free
Existing production methods, both CdSe and Cadmium free QDs (such as Indium Phosphide, InP), suffer
from broad PL-FWHM due to poor control of FWHM
size distribution either as a result of poorly controlled
or difficult to scale production methods. Recently
reported values for Cadmium free QDs, range from
41nm for green and 64nm for red; which are unacceptably high for most display standards.
Navillum is prepared to expand the scope of its unique
synthesis process to encompass additional semiconductor materials, particularly those that are cadmium-free. We are confident that the colloidal chemistry
that has produced our outstanding QDs to date will
transfer successfully to new materials such as indium phosphide, copper indium phosphide and manganese-doped semiconductors.
The advantages of the Navillum QD synthesis process
are well established, and we have extensive experience
utilizing the process for the production of high-quality cadmium selenide core/zinc sulfide shell QDs. We
have also utilized the process to synthesize quantum
dots with alternative, Group VI elements (i.e., calcogenides), including sulphur and tellurium, and with the
Group II element, zinc.
Appropriate, chemically-analogous selections of elemental precursors, surfactants, ligands and a common
solvent will be critical to this transfer; and we are currently researching these choices. Optimal ratios for
the identified, new constituents will also have to be
evaluated. We are pursuing cadmium-free QD production possibilities as quickly as existing resources
permit; the potential for achieving a non-toxic, environmentally benign QD product is excitingly high.
IN DEVELOPMENT:
TARGETS ONLY AT THIS TIME
Product Name
InP Quantum Dot
Catalogue Number
InP-(Insert Wavelength Required)
Concentration
10-4M
Ligand Surface Group
ODA
Solvent(s)
Hexanes or Toluene
Emission Peak / Spectrum
Range
Green 520-535 +/-5nm
Emission Tolerance
<5nm
Storage
Keep out of direct sunlight
Shelf Life
12 months
FWHM
<30nm
Red 600-635 +/-5nm
<30nm
www.navillum.com