i also have same doubt On Fri, Jan 29, 2016 at 12:30 PM, Nihar Sv <[email protected]> wrote:
> *Q:Why carbon does not use as a semiconductor?* > > Answer > > Electricity can conduct through carbon, but carbon does have a significant > resistance, and much of the electrical energy will be lost as heat energy > when it passes through carbon and it forms diamond crystal structure so > when we add impurity atoms it will not make any significant change...+ > Carbon is not used as semiconductor it has 4 valence electrons in it > valence shell but the energy gap is very small it will conduct electricity > even at room temperature ,the size of carbon is very small . It depends > upon the structure of carbon.In case of germanium and silicon they have d > orbits in the outer shell and they have greater mobility. > > I think we need to give much energy for conduction because the valance > electrons are very close to nucleus and on the case of Silicon and > germanium they are so far from nucleus as compared to carbon.and i think it > has very hard crystalline structure so change in structure(doping) is > harder than other semiconductor little a bit .but latest semiconductor > Graphene is the another form of carbon (upper layer) and Konstantin > Novoselove and Andre Geim won the Nobel prize in physics in 2010 for this > semiconductor.and it is very superior than our convention semiconductor > (compound+elemental).another semiconductor Molybdnite is more superior than > Graphene it has very high mobility and energy gap(1.8eV Approx) in > comparison of others.for more detail about these semiconductor > On Jan 29, 2016 10:27 AM, "THIPPESWAMY J" <[email protected]> wrote: > >> >> Dear teachers my doubt is regarding "carbon" why it is not a semi >> conductor being 14th group element. Please clarify. >> >> THIPPESWAMY.J. MSc, B.Ed . >> A.M (CBZ) >> G.H.S Towdur. >> Harapanahalli.Taluk >> Davanagere District. >> Mobile no 9845357075 >> >> -- >> 1. If a teacher wants to join STF, visit >> http://karnatakaeducation.org.in/KOER/en/index.php/Become_a_STF_groups_member >> 2. For STF training, visit KOER - >> http://karnatakaeducation.org.in/KOER/en/index.php >> 4. For Ubuntu 14.04 installation, visit >> http://karnatakaeducation.org.in/KOER/en/index.php/Kalpavriksha >> 4. For doubts on Ubuntu, public software, visit >> http://karnatakaeducation.org.in/KOER/en/index.php/Frequently_Asked_Questions >> 5. Are you using pirated software? Use Sarvajanika Tantramsha, see >> http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software >> ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ >> --- >> You received this message because you are subscribed to the Google Groups >> "Maths & Science STF" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/mathssciencestf. >> For more options, visit https://groups.google.com/d/optout. >> > -- > 1. If a teacher wants to join STF, visit > http://karnatakaeducation.org.in/KOER/en/index.php/Become_a_STF_groups_member > 2. For STF training, visit KOER - > http://karnatakaeducation.org.in/KOER/en/index.php > 4. For Ubuntu 14.04 installation, visit > http://karnatakaeducation.org.in/KOER/en/index.php/Kalpavriksha > 4. For doubts on Ubuntu, public software, visit > http://karnatakaeducation.org.in/KOER/en/index.php/Frequently_Asked_Questions > 5. Are you using pirated software? Use Sarvajanika Tantramsha, see > http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software > ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ > --- > You received this message because you are subscribed to the Google Groups > "Maths & Science STF" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/mathssciencestf. > For more options, visit https://groups.google.com/d/optout. > -- 1. If a teacher wants to join STF, visit http://karnatakaeducation.org.in/KOER/en/index.php/Become_a_STF_groups_member 2. For STF training, visit KOER - http://karnatakaeducation.org.in/KOER/en/index.php 4. For Ubuntu 14.04 installation, visit http://karnatakaeducation.org.in/KOER/en/index.php/Kalpavriksha 4. For doubts on Ubuntu, public software, visit http://karnatakaeducation.org.in/KOER/en/index.php/Frequently_Asked_Questions 5. Are you using pirated software? Use Sarvajanika Tantramsha, see http://karnatakaeducation.org.in/KOER/en/index.php/Why_public_software ಸಾರ್ವಜನಿಕ ಇಲಾಖೆಗೆ ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ --- You received this message because you are subscribed to the Google Groups "Maths & Science STF" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. Visit this group at https://groups.google.com/group/mathssciencestf. For more options, visit https://groups.google.com/d/optout.
