ISP - July/August 2013 - 15

cannot easily achieve the required volume
to support the OLED TV market. Not only
do batch methods limit the number of
possible QD-LED displays produced due
to actual amount of quantum dot material
available, but the method’s limitation in
producing quantum dots with desired size
uniformity also increases the per-unit cost.
Because of the cost constraint, engineers
are forced to limit the amount of material
used and, therefore, do not have true freedom to design the most optimal displays.
Display manufacturers want assurance
that they will be able to receive a reliable
supply of any material needed for production so as to ensure continuous operation.
In the case of quantum dots, this often involves contracting with multiple quantumdot manufacturers, but that can increase
concerns about uniformity of product if
the hired contractors have different synthesis methods. With microreactors, the
equipment manufacturer can provide additional units to scale up volume if needed.
By using the same software controls and
chemistry, the synthesis can be duplicated,
creating a second source and ensuring
uniformity throughout the supply.
One continuous-flow microreactor can
produce 100 kg of highly uniform tetrapod
quantum dots per day, or around 30,000
kg per year. Assuming a design that coats
the entire display surface with QD film,
this is enough to create approximately 10
million QD-LED TVs, outpacing projected
market demand over the next few years.
If demand grows further, the solution is
as simple as building another microreactor. The production of precise tetrapod
quantum dots via this method will allow
display manufacturers to improve color
and definition and ensure the ability to
meet consumer expectations at a price
people can afford.

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DaviD DoDerer

Quantum Materials Corp.
David Doderer is vice president for research and
development at Quantum Materials Corp. He has
more than 15 years of R&D experience in emerging technologies including biotech, nanotech, and
quantum effects.

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july/august 2013 | 15
ISP - July/August 2013

Table of Contents for the Digital Edition of ISP - July/August 2013
