Recent content by phjw

Hi guys, I am currently writing my dissertation on Graphene and I am investigateing how graphene remains stable, contradicting existing well established theory which states 2D materials cannot exist independently. With the main area of investigation looking at possible lattice distortions...

Currently at Loughborough where there is a team of about 12 people working on various Graphene related projects. Prof Feo (F V) Kusmartsev is head of the physics dept and specialises in Graphene. e-mail: f.kusmartsev@lboro.ac.uk hope that helps

Anyone? surly it has an easy answer?

Hi just a quick question, does the type of impurity (as long as its from group 3 or 5 respectively) used in doping a semiconductor matter in terms of its activation voltage or is it just down to the level of doping? So for instance a would say a silicon semiconductor doped with 1 to 10,000...

I have just come across the same problem in an exercise book (no solution unfortunately). Its very unlikely two sources are incorrect?

cheers so obvious!

Hi I'm practising past papers however have no answers. one of the questions says: Why can a p-n junction connected in series with an n-p junction not act as an p-n-p transistor. My only thoughts were that the base element must be thin (approx 10 wavelengths of light) and in thus in this...