Our N-type monocrystalline solar cells are the building block of the SP TOPCon module series, available in 16BB and 18BB multi-busbar layouts on 182mm wafers. Conversion efficiency reaches up to 25%, enabled by tunnel oxide passivated contact architecture that reduces recombination losses at the cell surface.
All cells are produced under our ISO 9001 quality system and are 100% EL-inspected before dispatch, so partners can rely on uniform appearance and electrical performance in every batch.
Key Features
- High conversion efficiency: up to 25% from TOPCon passivated-contact architecture.
- Standard wafer format: 182mm monocrystalline, compatible with mainstream module production lines.
- Multi-busbar options: 16BB and 18BB layouts for lower series resistance.
- Lower degradation: N-type base material reduces light-induced degradation versus P-type cells.
- Better weak-light response: N-type cells keep generating earlier in the morning and later in the afternoon.
- Full traceability: consistent efficiency binning, intact passivation layers and 100% EL inspection from wafer to finished cell.
Typical Applications
Module assemblers and OEM customers building high-efficiency N-type modules, and our own SP TOPCon module production line.
Common Pain Points We Solve
- Inconsistent efficiency bins: tight, consistent binning with full wafer-to-cell traceability keeps your module line output predictable.
- Hidden micro-cracks: 100% EL inspection before dispatch removes cracked or mismatched cells that only fail after lamination.
- Supply interruptions: our own 5GW module capacity anchors cell supply for long-term OEM programmes.
- Mixed-quality batches: uniform appearance and electrical performance in every batch, verified lot by lot.
Specifications
| Wafer size | 182mm monocrystalline |
|---|---|
| Busbars | 16BB / 18BB multi-busbar |
| Efficiency | Up to 25% |
| Technology | TOPCon, N-type |
| Degradation | Lower LID vs P-type cells |
