论文信息 - High efficiency polycrystalline silicon solar cells using phosphorus pretreatment

High efficiency polycrystalline silicon solar cells using phosphorus pretreatment

Recent improvements in crystalline silicon solar cell energy conversion efficiency to beyond 20% have been obtained by combining surface oxide passivation with high quality, low resistivity substrates. The objective of the present work was to evaluate the effectiveness of these techniques in improving efficiency on lower quality cast polycrystalline silicon. Due to the poorer crystallographic quality and higher levels of secondary impurities, an additional phosphorus pretreatment was found to reliably improve the performance of the polycrystalline cells above those fabricated without this pretreatment. Cell energy conversion efficiencies were notably higher than previously reported for the present material with values in the 15.3–16.0% range obtained for p‐type substrates of 0.1–1 Ω cm resistivity.

[1] A. W. Blakers,et al. 19.1% efficient silicon solar cell , 1984 .

[2] A. Rohatgi,et al. Research on the basic understanding of high efficiency in silicon solar cells. Semiannual report, December 1, 1983-June 1, 1984 , 1984 .

[3] W. Schröter,et al. Phosphorus gettering and intrinsic gettering of nickel in silicon , 1984 .

[4] C. Keavney,et al. High-efficiency ion-implanted silicon solar cells , 1984, IEEE Transactions on Electron Devices.

[5] A. W. Blakers,et al. Characterization of high‐efficiency silicon solar cells , 1985 .

[6] M. Green,et al. 20% efficiency silicon solar cells , 1986 .

[7] Hani V. Ragaie. A simple analytical model for calculating the photoresponse of preferentially doped polycrystalline solar cells , 1985 .