When electron are confined in a very narrow space, their energy is quantized. This means that in the valence or the conduction band they can only take discrete energy levels. Many of such quantum structures called quantum wells can be fabricated side by side, forming multi quantum well structures. The electron wave function in a… Read more: Super Lattices

Derivation of the depletion width of an a abrupt PN homojunction

Zinc Oxide (ZnO) thin films are used in Dye Sensitized Solar Cells (DSSC) in LEDs and detectors. ZnO is a very forgiving material which displays its semiconducting properties when deposited in many different ways. For LEDs and Solar Cells, thin and uniform films are needed at least in parts of the device. DC or RF… Read more: Sputtered ZnO, how good is it?: Schottky diodes

The advent of LEDs as lighting devices is the direct result of the invention of blue LEDs. This feat was achieved by Nichia in the mid-1990s using the GaN technology. Other technologies such SiC were experimented and saw a laboratory level success. Because of the size of the market for that kind of product and… Read more: ZnO LEDs recent advances

For anybody owning a 3D printer at home, printing plastic object is interesting at first but there is soon an idea or a project that will be better in metal. Metal seems to be for whatever reason the holy grail. So, when I stumble onto Filament metal filaments, I decided to give it a try.… Read more: 3D printing Metal with a fused filament printer