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Promising graphene photomatrices

23.06.2013

The use of new graphene sensors will make photo and video cameras 1000 times more sensitive to light.

Everyone can hardly be satisfied with the sensitivity of their own camera's sensor when it comes to shooting in low light conditions. But in the near future, this may change dramatically thanks to the work of a group of scientists from Singapore who are developing a new technology for the production of photosensitive sensors for cameras, which are based on graphene, a material that is a crystalline structure of carbon atoms, only one atom thick. Using the new sensor is expected to make future cameras 1000 times more sensitive to light, while reducing the amount of energy used by the sensor by at least 10 times.

The increased sensitivity of the sensor will allow you to take high-quality photographs in low light conditions. However, at least that's what the researchers claim, the new graphene sensors will cost five times less than the cost of existing CCD sensors, which in turn means that camera prices will drop significantly in the future. Graphene sensors have high light sensitivity due to the fact that they more effectively capture light photons into their trap, and the high electrical conductivity of graphene makes it possible to remove signals from the sensor and process signals of a much lower level than conventional semiconductor sensors allow.

New graphene sensors can be used not only in consumer cameras and video cameras. These sensors have high sensitivity not only in the visible light range, but also in the infrared as well. Therefore, such sensors can be used very effectively in cameras that monitor traffic on the roads, infrared cameras for night vision devices and in satellite cameras that take high-quality images of the earth's surface.

According to Professor Wang Qijie of Nanyang Technological University, graphene camera sensors are being developed in such a way that they can be manufactured using existing manufacturing techniques. This means that new sensors based on graphene nanostructures will easily and without technological difficulties replace the CCD sensors of modern cameras.

It is still too early to say exactly when graphene sensors will appear in consumer cameras. Most quickly, first of all, such sensors will find application in more expensive industrial cameras, surveillance cameras, etc. In addition, graphene technologies are steadily making their way into other areas, which will make the use of graphene mainstream in the near future.

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