Solar cell

Home

Solar cell

Monocrystalline Bifacial 166 9BB PERC Solar Cell

Dimensions :
166mm × 166 mm ± 0.5 mm
Thickness :
180 ± 18 μm
Front (-) :
Silver 134 line 9BB (silver)
Back (+) :
1.4mm ± 0.3mm back electrode (silver paste) 9BB main gate line (aluminum)

Inquire Now

Product categories

how can we help you

You can contact us any way that is convenient for you. We are available 24/7 via email or telephone.

New Products

Product Details

What is PERC Technology?

PERC means Passivated Emitter and Rear Contact or Passivated Emitter and Rear Cell .

Traditional cells saw jumps in efficiency when panel manufacturers began putting a front passivation layer to prevent electron recombination at the front panel. Additional bumps in efficiency were achievable by reducing the number of electrons that hit the rear of the panel.

PERC cells take this one step further by placing an additional capping and passivation layer on the rear surface of the photovoltaic (PV) panels, thereby reducing back-side recombination. These layers also help prevent the panels from heating up from unreflected solar radiation. Since panels perform better in cooler temperatures, this helps boost performance as well. PERC cells work in a similar manner but with a few key differences.

The n-type sheet, which is negatively charged, typically contains more atoms that have an additional electron in their outer shell — like phosphorus — to maintain that negative charge.

The positive p-type sheet contains positively charged holes into which those additional electrons can fit. These are usually boron or gallium, which lack one valence electron needed to bond with the silicon around it.

The atoms missing an outer electron — the holes — naturally bond with the atoms that have an extra valence electron. This leaves one additional electron out of the bond, which then gets discharged and collected as electricity.

When solar energy enters the panel, the positive and negative silicon layers naturally rebalance, and the process begins again. While the underlying idea is the same, PERC cells have a few additional layers to prevent the loss of electrons to the outside world.

Engineering Drawing(mm)

Spectral Response IV Curve

Light intensity reliability

Intensity(W/m²)	1000	900	500	300	200
Uoc	1.0	0.996	0.969	0.947	0.928
Isc	1.0	0.9	0.5	0.3	0.2
* Taking the Voc(Isc) tested at 1000W/m² as the standard, test the decrease of Voc (Isc) with the light intensity.

Electrical performance distribution

MODEL(%)	Power Pmpp(W)	Max.Power CurrentImpp(A)	Short Circuit Current Isc(A)	Max.Power VoltageVmpp(V)	Open CircuitVoltageVoc(V)
23.0% （H） UOC	6.31	10.823	11.318	0.583	0.686
23.0% （L） UOC	6.31	10.879	11.384	0.58	0.682
22.9% （H） UOC	6.28	10.772	11.299	0.583	0.685
22.9% （L） UOC	6.28	10.846	11.365	0.579	0.681
22.8% （H） UOC	6.25	10.739	11.279	0.582	0.684
22.8% （L） UOC	6.25	10.813	11.346	0.578	0.68
22.7% （H） UOC	6.22	10.706	11.260	0.581	0.683
22.7%（L） UOC	6.22	10.780	11.326	0.577	0.679
22.6%（H） UOC	6.2	10.690	11.285	0.58	0.682
22.6%（L） UOC	6.2	10.764	11.334	0.576	0.678
22.5%（H） UOC	6.17	10.656	11.281	0.579	0.68
22.5%（L） UOC	6.17	10.730	11.332	0.575	0.676
22.4%（H） UOC	6.14	10.623	11.262	0.578	0.679
22.4%（L） UOC	6.14	10.697	11.312	0.574	0.675
22.3%（H） UOC	6.11	10.589	11.242	0.577	0.678
22.3%（L） UOC	6.11	10.663	11.292	0.573	0.674