TRANSFORMATIVE TECH: SHORTWAVE INFRARED
such as higher quantum efficiency. ‘A second area is further developing our
integrated circuits. Here, we have a clear roadmap towards higher resolution, to megapixel devices. ‘Tirdly, we are working on lower cost and miniaturised packaging that will enable new types of application. At the moment we package the device in a robust way so that it’s reliable and tolerates rougher environmental conditions. But new packaging will open up new use cases.’ Rosenberg: ‘We have shipped products
to customers that have started testing and evaluating, and we expect further demand from them. We want to be ready this year to increase production capability to meet this demand. ‘We’re investing in scaling up production, commercialising our current imagers, and continuing to develop future generations of devices. We do see adoption to be further increased by extending the capabilities of the devices. However, we’re already at the point where the market will start to shift [towards buying quantum dot SWIR sensors].’O
epitaxy. Plus, these two wafers need to be aligned and bonded together, and this bonding process is extremely complex and there are yield issues. It’s a complex process that’s very expensive. ‘What we do, we take a CMOS wafer with all the electronics and we monolithically add material on top, using thin film processes and spin coating. We have just one substrate on top of which we layer the material. Te starting point has a cost benefit compared to InGaAs, but also it leads to scalability; we can scale the pixel area and we can fabricate smaller or
larger pixels with greater ease depending on the requirements of the customer.’
What will you be working on in the near future? Ryhänen: ‘Firstly, we are investigating nanomaterials to extend our wavelength range. We are working on midwave infrared sensing technology, to add that to the visible and SWIR imagers already in our portfolio. Tat’s one area of investment. And all the time when working with the material we are targeting higher performance,
Dr Tapani Ryhänen is CTO and co-founder of Emberion. Before establishing Emberion he led Nokia’s research and development of sensor and material technologies. He has also worked at Vaisala Technologies, the Technical Research Centre of Finland (VTT), and at Aalto University.
Jyrki Rosenberg, CEO of Emberion, has more than 20 years’ experience in the technology sector. He led F-Secure’s B2B cyber security product business, was the CEO of a digital music service, and held a number of senior roles in sales, marketing, product development and general management at Nokia.
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