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Quantum Science makes 1550nm lead-free QDs


UK start-up claims unparalleled short-wave infrared (SWIR) sensitivity for lead-free materials

British Infrared quantum dot (QD) technology company Quantum Science has created lead-free QDs sensitive to wavelengths of 1550nm. The company says its latest breakthrough in QD synthesis means its INFIQ technology boasts unparalleled short-wave infrared (SWIR) sensitivity for lead-free materials.

The announcement follows Quantum Science’s achievement of 1400nm last year thanks to an innovative QD production process overcoming barriers that limit most lead-free QDs to just 1200nm.

Reaching 1550nm is significant because of the difficulty of growing long wavelength, lead-free QDs with sufficiently narrow size distributions and uniform shapes. In particular, it becomes difficult to control QD growth without damaging the optical properties that make them suitable for device applications.

Hao Pang, CEO and founder of Quantum Science, said: "With performance of 1500nm achieved, our lead-free INFIQ QD infrared technology is not just the most advanced solution for SWIR imaging and sensing on the market, it is also by far the industry's most desired option."

He added: “As the demand for SWIR sensitive semiconductor materials grows, non-lead-containing QDs like our INFIQ lead-free infrared technology will be key to bringing SWIR into consumer markets. This technology is providing real market disruption and pushing the boundaries of what lead-free nanotechnology can accomplish.”

QS is a materials innovation company that focuses on developing and commercialising QDs, nanomaterials and technologies for the machine vision and sensing markets.

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