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Diodes, each ⚛ shares 1 with its neighboring silicon ⚛ - Coggle Diagram

- - - - Insulator
        
        Semi-conductors
        
        Semiconductors have a resitivity value between a conductor and insulator
        
        not a good conductor
        
        ↓no. of free⚡
        
        still able to flow (under special conditions
        
        ↑value ⚡resistors
        
        ⚡ conductivity can ⇈ by replacing/adding ↓no. of certain donor/acceptor atoms
        
        to the
        
        2 more items...
        
        Adding impurities / Doping
        
        2 more items...
        
        To extract an ⚡ current
        
        We need
        
        2 more items...
        
        not a good insulator
        
        examples
        
        Silicon
        
        on their own
        
        1 more item...
        
        4 valence ⚡
        
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        Germanium
        
        Materials with little to no free atoms(non metals)
        
        ⚡in Outer valence shell is strongly attached by nucleus (Electron stuck to parent atom)
        
        ⚡ applied → no free electrons flowing = no ⚡current
        
        ↑Resistivity(MΏ/m)
        
        Unaffected by 🔥 changes
      - Conductors
        
        ↓Resistivity (ɥΏ/m)
        
        Allows ⚡ to easily pass through (due to many free electrons moving around) (If there is something to encourage the movement (Voltage source)
        
        ⚡ applied → free electrons leaving parent atoms
        
        ⚡drift / Current / ⚡flow
        
        ⚡flow ∝ conductor resistivity
        
        ⚡free movement ∝ difficulty of ⚡breaking from parent atom (when voltage is applied)
        
        Good conductors = ⇊⚡ in outer Valence Shell (Majority of Metals)
        
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        Resisted⚡ (Lost⚡Energy) appears as 🔥
        
        🔥 ∝ Resistance