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A Future Colorfully Lit by the Mystifying Physics of Paint-On Semiconductors

A Future Colorfully Lit by the Mystifying Physics of Paint-On Semiconductors

Pick any Color with this New Semiconductors that apparently defies the laws of physics

Researchers have recently discovered a new form of semiconductors that can absorb and give off any color the heart desires. This semiconductor can then be made to work in lasers, LEDs, windows and then some. This emergent form of semiconductors apparently defies the laws of physics and can give off any color that you want.

What’s even more interesting with this semiconductor is that it can be applied in a commercial setting with minimum fuss. But can this new form of semiconductors really work? Can we really have ourselves a light source that not only absorbs light but also gives off light of any color of our choosing?

What is this new form of Semiconductors?

This new and emergent class of semiconductor is known as HOIP or Hybrid Organic- Inorganic Perovskites. These HOIP semiconductor material is very easy to produce in large quantities and is energy efficient which makes it a very interesting material to play with .

But this is not even half the story. HOIP semiconductors apparently don’t like to follow the normal laws of physics. To elaborate, normal semiconductor materials are formed on rigidly established foundations but with the HOIP semiconductor it is a funhouse in structure. The HOIP semiconductor has stable quantum properties but in a very intense molecular motion. What researchers really want to find out is how these two Waring properties match together and how exactly can this phenomenon be explained?

So how can this Phenomenon really be explained?

In normal semiconductor materials, the materials are in the form of crystalline lattices in a two dimensional structure. This gives the rigidity to the foundations of semiconductor materials.

But in the case of HOIP semiconductor materials, there is intense molecular motions with stable quantum properties. The HOIP material is in the form of a perovskite crystalline like lattice that self assembles and how it does this is in the form of two dimensional sheets layered to form a three dimensional framework.

These two dimensional sheets are layered with the help of another molecular structure which you can think of as rubber bands, this rubber band like structure lends the wobbling feature to the HOIP semiconductor material while the two dimensional sheets lend a stable and rigid feature to the HOIP semiconductor.

Why is HOIPs such great Semiconductors?

In an atom, as we all know electrons orbit around the nucleus or can be shared by some atoms in a chemical bond. In HOIP semiconductors, the electrons are shared by the atoms more broadly.

In such a system like the HOIP semiconductors, the electrons run about participating in things like flow of electricity and heat. This leaves the orbit of an atom empty. This situation is called an Electron hole. But the atoms want their electron back. The hole becomes a positive charge while the electron is the negative charge and opposites attract. So thus begins the dance for the atom to attract the electron back into its orbit. This so called dance to get the electron back into the orbit of an atom is called exciton.

Coming back to HOIP semiconductors, in a normal semiconductor the excitons are correlated which can give some desirable properties when an energy source is applied. In HOIP semiconductors like some other semiconductors, the excitons can even pair up to form biexcitons that boost the energy properties of the semiconductor.

In HOIPs the Biexciton energies are so high that by putting this material into a laser you get maximum input absorption and then these biexcitons contract and pump out the light which makes using the HOIP semiconductor material great for use in LEDs, lasers and such.What’s more is that you can control the chemical properties of HOIPs, that is the width between the biexcitons, to control the wavelength of light, this gives you the color of your choosing emitted by the HOIP semiconductor material.

Tags : excitonSemiconductors
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