Inverse charge funnelling in a two-dimensional semiconductor paves the way to highly efficient solar cells The amount of energy received from the Sun by the surface of Earth in one hour, if converted into electricity, would power the whole world for one day. However, such energy conversion cannot be realised …
After more than 50 years of technological advancements in microelectronics, the measurement of the properties of electronic devices is a well-established field. However, graphene and two-dimensional materials are revolutionising this field, presenting new challenges for scientists and electronic engineers. Some peculiar phenomena observed in graphene require a careful choice of …
Plasmons are collective excitations of charges which are coupled to electromagnetic radiation in a material. They are responsible for the colour of stained glass, found for example in the windows of churches, or in the famous Lycurgus Cup, a 4th century Roman glass cup which displays a different colour depending …
Graphene, a thin sheet of carbon atoms only one atom thick, has been used to realise a new photodetector (i.e. an electronic component used to sense and measure light) which is promising for some special applications. In the university of Exeter, me and my colleagues used a chemically-modified form of …
Photodetectors are electronic devices which are able to sense light. They are present in everyday tools such as mobile phones, televisions, remote controls, cars and much more. For example they are used to sense the amount of light which illuminates the screen of a mobile to tune its luminosity accordingly. …
