Graphene still looking for a home.... ....& QDots
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Posted On: 08/08/2017 2:57:43 PM
Graphene still looking for a home....
....& QDots may help light the way:
"Graphene Flagship researchers from the Institute of Photonic Sciences in Barcelona have shown that it is possible to integrate graphene into a CMOS IC.
The team then created a high resolution image sensor by combining this graphene-CMOS device with quantum dots to create an array of photodetectors. When used as a digital camera, the device can sense UV, visible and infrared light at the same time. Graphene’s high charge mobility enables the device to have high sensitivity.
By using a layering and patterning approach to create a hybrid graphene and quantum dot system on a CMOS wafer, the Flagship team said it solved a complex problem with a simple solution.
First, graphene is deposited, then patterned to define the pixel shape. After this, a layer of PbS colloidal quantum dots is added. Light is absorbed by the quantum dot layer, which transfers it as photo-generated holes or electrons to the graphene, where a bias voltage applied between two pixel contacts causes them to circulate. The photo signal is sensed by the change in graphene’s conductivity."
http://www.newelectronics.co.uk/electronics-t...es/158342/
....& QDots may help light the way:
"Graphene Flagship researchers from the Institute of Photonic Sciences in Barcelona have shown that it is possible to integrate graphene into a CMOS IC.
The team then created a high resolution image sensor by combining this graphene-CMOS device with quantum dots to create an array of photodetectors. When used as a digital camera, the device can sense UV, visible and infrared light at the same time. Graphene’s high charge mobility enables the device to have high sensitivity.
By using a layering and patterning approach to create a hybrid graphene and quantum dot system on a CMOS wafer, the Flagship team said it solved a complex problem with a simple solution.
First, graphene is deposited, then patterned to define the pixel shape. After this, a layer of PbS colloidal quantum dots is added. Light is absorbed by the quantum dot layer, which transfers it as photo-generated holes or electrons to the graphene, where a bias voltage applied between two pixel contacts causes them to circulate. The photo signal is sensed by the change in graphene’s conductivity."
http://www.newelectronics.co.uk/electronics-t...es/158342/
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