Reverse Bias Raises the Barrier - Semiconductor Physics: Bands, Doping, and Junctions Step by Step

Reverse applied voltage raises the toy barrier ledger. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Reverse bias raises the effective barrier

Built-in voltage 3 volts plus reverse applied voltage 1 volt gives 4 volts.

V_{\mathrm{eff}}=3+1=4

The raised barrier has eight joules

Charge 2 coulombs times 4 volts gives 8 joules.

E=2\cdot 4=8\ \mathrm{J}