Technical explanation
Substrate type differs from cell architecture. TOPCon and back contacts can use different substrates. Degradation also depends on manufacturing, materials and operating conditions.
Definition · Technology
N-Type vs. P-TypeTypes of photovoltaic silicon doping
TL;DR
N-type and P-type describe silicon doping. They alone do not establish performance, quality or a need to replace existing modules.
Definition
N-type doping produces electrons as majority carriers; P-type produces holes. Phosphorus and boron are examples of dopants; others exist.
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Power
Per datasheet
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Temperature
Model coefficient
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Degradation
Read warranty
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Cost
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Swiss context
For a Swiss purchase, compare model, certification, simulated output and warranty. For an existing installation, assess condition and output before deciding on replacement.
Related terms
Related guides
FAQs — N-Type vs. P-Type
Are all TOPCon panels N-Type?+
No. TOPCon denotes a passivated contact; P-type implementations also exist. Check substrate and architecture in manufacturer documentation.
Are my old PERC panels bad?+
No. Older technology does not imply a defect. Check safety, output and module condition, then compare repair, continued use and replacement on full cost.
Sources & method
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