P-type Doping Boron has 3 valence electrons Accepts' one electron from lattice Creates a hole-p-type s):(s):(s):(s):(s):(s):(s):(s):(S s):③:(::(:③:(:(s:③° (③::○:○: ③::③:(:③:(:(:(:( s):():):(s):(s):(s):(S):(S):(i Fall 2003-MA Schmidt 3. 155J 6.152]-Lecture 2-Slide 8Fall 2003 – M.A. Schmidt 3.155J/6.152J – Lecture 2 – Slide 8 P-type Doping B Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Boron has 3 valence electrons ‘Accepts’ one electron from lattice Creates a ‘hole’ – p-type