IUB CHEM-C 118 - 10-27 chapter 11 (18 pages)

Previewing pages 1, 2, 3, 4, 5, 6 of 18 page document View the full content.
View Full Document

10-27 chapter 11



Previewing pages 1, 2, 3, 4, 5, 6 of actual document.

View the full content.
View Full Document
View Full Document

10-27 chapter 11

72 views


Pages:
18
School:
Indiana University, Bloomington
Course:
Chem-C 118 - Principles of Chemistry and Biochemistry Ii

Unformatted text preview:

Clicker Question A composite material is one which A Is either plastic or brittle and does not conduct heat or electricity B Has a shiny surface and is a good conductor of heat or electrcity C Occurs naturally and can be purified to use in manufacturing alloys D Is brittle nonmetallic resistant to heat and chemically unreactive E Combines properties of metals polymers and ceramic to performed a special function 11 Solids and Materials 11 5 Types of Solids 11 6 Crystalline Solids 11 7 Network Solids 11 8 Materials Science 11 9 Metals Semiconductors and Insulators 11 10 Silicon and the Chip 11 11 Cement Ceramics and Glass Monday Monday October October 27 27 2014 2014 Read Read Sections Sections 11 10 11 10 and and 11 11 11 11 for for Monday Monday End End of of Chapter Chapter 11 11 Problems Problems 59 59 61 61 63 63 65 65 72 72 75 75 77 77 84 84 86 86 88 88 90 90 92 92 93 93 108 108 Band Gaps in Semiconductors Control of the band gap size determines how much energy is needed to turn on a semiconductor Silicon the Chip Controlled addition of another element Silicon the Chip Ultra pure Si is prepared by zone refining Impurities are more soluble in Si than in Si s A molten zone is moved through a sample Impurities move along in the liquefied portion Silicon the Chip A p n junction Charge carriers holes p type and e n type Silicon the Chip Smart chips Can we diagnose a disease with a single chip Example Systemic Lupus Erythematosus SLE May provide in situ disease diagnosis and observation in real time Nature Medcine 2012 18 9 1434 Photovoltaic Cells Based on photosynthesis CO2 e Acceptor H2O e Donor C H2O hv e chlorophyll O2 H2O CO2 solar energy C H2O O2 Silicon the Chip nn pp A photovoltaic cell Solar to Electrical Energy Conversion p Energy CB n CB nn pp VB VB Clicker What must silicon be doped with to make a p type semiconductor 1 P 2 As 3 B needs to have a lower of valence electrons than silicon 4 Te Quantum Dots Nanocrystals made out of semiconducting materials



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view 10-27 chapter 11 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view 10-27 chapter 11 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?