Osram launches its first quantum dot LED

In booth #1701 at the LIGHTFAIR International 2019 trade show in Philadelphia, PA (19–23 May), Osram Opto Semiconductors GmbH of Regensburg, Germany is showcasing its first quantum dot (QD) LED.

Due to their very small size, the light that is re-emitted when blue LED light hits nanoparticles depends on their size: QD particles that are roughly 3nm in size produce green light, while particles about 7nm emit red light. Osram is using such tunable light conversion technology for the first time in its new Osconiq S 3030 QD mid-power LED, which will lead to more QD LEDs for the general lighting market in the future. The Osconiq S 3030 QD was specially developed to enable users to design luminaires with high efficacy and color rendering for area lighting and downlight applications.

When manufacturing conventional white LEDs, the main objectives are efficacy and product quality. Achieving both at the same time is particularly challenging, especially with very high color rendering indexes (CRI), says Osram. The advantage of using quantum dots is that the existing LED manufacturing processes remain the same. QDs are simply used instead of conventional phosphors when the converter material is applied.

More than a year ago, Osram acquired Pacific Light Technologies (PLT), which develops and manufactures optical nanomaterials. Osram says that the PLT QD technology is enabling it to begin to close the efficacy gap that exists between CRI 80 and CRI 90 LEDs today. The new Osconiq S 3030 includes a specially developed QD phosphor solution that enables CRI 90 to achieve an efficacy value of 173lm/W at 3000K – which is claimed to be a best-in-class value for 0.2W high-performance LEDs. The compact dimensions of 3.0mm x 3.0mm and the low thermal resistance enable simple system design. The Osconiq S 3030 QD is also available in various color temperatures, from 2700 to 6500K.

Osram says that another unique feature of the PLT QD technology is that the quantum dots are encapsulated to protect them from moisture and other external influences that pose the greatest risk to the functionality of an LED. The special encapsulation technology allows the QDs to reliably master the demanding conditions of on-chip operation within the LED component, the firm adds.

Tags: Osram Quantum dot LEDs

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