4 ms·

Graphene will firmly remain in the land of "..it promises to transform the semiconductor industry " than actually causing the said transformation !

jachee 3y ago
I’m still holding out for the Diamond Age.
- the__alchemist 3y ago
  The lilies sprouted from a stadium-sized cut-crystal vase, the Diamond Palace, which was open to the public. Tourists, aerobicizing pensioners, and ranks of uniformed schoolchildren marched through it year in and year out, peering through walls of glass (actually solid diamond, which was cheaper) at various phases of the molecular disassembly line that was Source Victoria.
adrian_b 3y ago
After this advancement, it is very likely that this claim has become false. I used to think like this, because the previous methods of producing graphene were completely impractical for making integrated circuits. This new method developed by a team at Georgia Tech together with a Chinese team, works in a completely different way. Starting from a silicon carbide wafer suitable for integrated circuits, a superficial layer of carbon is made by evaporating the silicon atoms that are close to the surface. Then the carbon layer is crystallized into graphene. This process makes high-quality semiconducting monocrystalline graphene suitable for making semiconductor devices. The main challenge that remains is to find a way to make high-quality metallic ohmic contacts to the graphene, because the metallic contacts with chromium that have been used now have a high Shottky barrier voltage, and also to make high-quality lightly doped regions of both p and n polarities, because only one high-quality polarity has been demonstrated yet. There is a high probability that these problems can be solved now, when a good substrate has become available, which was the hardest problem that prevented the use of graphene.

jachee 3y ago

I’m still holding out for the Diamond Age.

the__alchemist 3y ago
The lilies sprouted from a stadium-sized cut-crystal vase, the Diamond Palace, which was open to the public. Tourists, aerobicizing pensioners, and ranks of uniformed schoolchildren marched through it year in and year out, peering through walls of glass (actually solid diamond, which was cheaper) at various phases of the molecular disassembly line that was Source Victoria.

adrian_b 3y ago

After this advancement, it is very likely that this claim has become false. I used to think like this, because the previous methods of producing graphene were completely impractical for making integrated circuits. This new method developed by a team at Georgia Tech together with a Chinese team, works in a completely different way. Starting from a silicon carbide wafer suitable for integrated circuits, a superficial layer of carbon is made by evaporating the silicon atoms that are close to the surface. Then the carbon layer is crystallized into graphene. This process makes high-quality semiconducting monocrystalline graphene suitable for making semiconductor devices. The main challenge that remains is to find a way to make high-quality metallic ohmic contacts to the graphene, because the metallic contacts with chromium that have been used now have a high Shottky barrier voltage, and also to make high-quality lightly doped regions of both p and n polarities, because only one high-quality polarity has been demonstrated yet. There is a high probability that these problems can be solved now, when a good substrate has become available, which was the hardest problem that prevented the use of graphene.