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Passivation of defect states in surface and edge regions on pn-junction Si solar cells by use of hydrogen cyanide solutions

100%

Takahashi M., Shishido T., Iwasa H., Kobayashi H.

Open Physics

2009

vol. 7

issue 2

227-231

The local photovoltage of the pn-junction single-crystalline silicon solar cells observed by spot light scanning gradually decreases in the vicinity of edges. The energy conversion efficiency is increased by shadowing the edge regions where the local photovoltage is lower, showing that the defect density is high in the edge regions. From the analysis of the local photovoltage, the spacial distribution of defect states is obtained. The cyanide method, i. e., immersion of solar cells in HCN solutions at room temperature, increases the local photovoltage and increases the energy conversion efficiency.

Ultrathin Glass for the Photovoltaic Applications

100%

Dziedzic J., Inglot M.

Acta Physica Polonica A

2017

vol. 132

issue 1

176-178

Chemically strengthened ultrathin glass with a thickness of less than 1 mm has many advantages, such as flexibility, smooth surface, good transmittance, excellent gas and water barrier, much higher toughened in relations to thermally tempered glass, higher impact resistance, increased corrosion resistance and much higher abrasion rate. Chemical strengthening process is a process where an ion exchange occurs by diffusion between the glass panes and the brine solution bath. The deeper penetration of the glass surface by ions contained in the brine bath contributes to the hardness of the glass sheets, which reduces the occurrence of surface defects that cause reflections. From the point of view of photovoltaic applications ultrathin glass significantly reduces the weight of the whole photovoltaic panel structure with respect to known solutions. Furthermore, the reduction of the glass thickness increases the transmission of solar energy in the visible range directly through the glass. In addition, chemical tempered glass has a lower reflectance of light from the surface than the thermally tempered glass. What is more, ultrathin glass is perfect substrate for deposition of nanomaterials, i.e. conductive films or quantum dots. In this work we demonstrate that chemically strengthened ultrathin glass is a perfect material for the photovoltaic applications, i.e. as a substrate for deposition of thin layers and for the design of photovoltaic modules of reduced weight.

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1 Acta Physica Polonica A

1 Open Physics

1 2017

1 2009

1 Dziedzic J.

1 Inglot M.

1 Iwasa H.

1 Kobayashi H.

1 Shishido T.

1 Takahashi M.

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Passivation of defect states in surface and edge regions on pn-junction Si solar cells by use of hydrogen cyanide solutions

Ultrathin Glass for the Photovoltaic Applications