Photovoltaic glass and phosphorus

How do phosphorus silicate glass layers affect PV efficiencies?

Phosphorous silicate glass (PSG) layers were carefully designed on an emitter layer to determine how they affect the efficiencies of solar cells before and after PID. A current-voltage (I-V) tester was used to determine PV parameters. An ellipseometer and transmission electron microscope (TEM) were used to measure the thicknesses of the PSG layers.

Can phosphorus diffusion be used to make a lead-free glass frit?

4. Conclusion In summary, a novel lead-free Bi-based P-doped glass frit was successfully fabricated using low-temperature phosphorus diffusion. This novel glass frit was compared to a glass frit prepared by the conventional melt-quenching method.

Can phosphorus doped oxide glass be used for conventional furnace diffusion?

Doping characteristics from phosphorus doped oxide glass (P-SOD) for conventional furnace diffusion have been reported by many researchers 11, 12, 13, 14. So far however, insufficient published data for RTP doping are available to clarify doping mechanism 10, 13. In this paper, experimental results on RTP doping from P-SOD are described.

What are the PV characteristics of solar cells?

The PV characteristics of the solar cells were determined under standard illumination test conditions (25°C, 1000 W/m 2, and AM 1.5 G). Electroluminescence (EL) data were recorded before and after PID tests. SIMS was performed to analysis the migration of sodium ions in the solar cells.

How much power does a solar cell lose if a PSG layer is thick?

The power loss of a solar cell containing a 22.3-nm-thick PSG layer remarkably decreased by 11.48%, and the power loss further decreased by approximately 5% when the thickness of the PSG layer was greater than 23.2 nm; these results indicate that the PID of solar cells containing PSG layers can be reduced significantly.

What is a PSG layer in a solar cell?

SIMS was performed to analysis the migration of sodium ions in the solar cells. A PSG layer can be formed on a Si surface during the phosphorous diffusion process according the following reactions: 11 The PSG layer is a mixture of P 2 O 5 and SiO 2, which can be easily removed by using a HF solution.