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Volt-1Lv 1.1
☀️🎯 Mission BriefingAct 1 • Stage 1.1 • +160 XP

Photovoltaic Effect & Silicon P-N Junction Bandgaps

Photovoltaic (PV) cells are semiconductors with a p-n junction. When incident photons carry energy equal to or greater than the material's bandgap energy (E_g = 1.12 eV for silicon), they excite valence electrons into the conduction band, creating electron-hole pairs. The built-in electric field across the depletion region sweeps electrons toward the n-type contact, creating a continuous DC current.

🌟 Starting Stage (1.1)