101. Na Doping of CIGS Solar Cells Using Low Sodium-Doped Mo Layer
- Author
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Marika Edoff, Adam Hultqvist, Pedro M. P. Salomé, and Viktor Fjällström
- Subjects
Materials science ,Inorganic chemistry ,Doping ,chemistry.chemical_element ,Substrate (electronics) ,Condensed Matter Physics ,Copper indium gallium selenide solar cells ,Electronic, Optical and Magnetic Materials ,Atomic layer deposition ,chemistry ,Chemical engineering ,Molybdenum ,Electrical and Electronic Engineering ,Thin film ,Layer (electronics) ,Low sodium - Abstract
Na plays an important role in the electrical performance of Cu(In,Ga)Se 2 (CIGS) thin-film solar cells. Traditionally, Na has been introduced during the growth of CIGS by thermal diffusion from the soda-lime glass (SLG) substrate; however, better control of the amount of Na is needed to have a more precise control of growth conditions. The introduction of Na into CIGS was studied in three different ways: from the SLG, from a NaF precursor, and from a Na-doped Mo (MoNa) back contact. The most successful approaches were obtained by using the conventional SLG and the NaF precursor. Different growth temperatures of CIGS were tested in an attempt to diffuse more Na from the MoNa layer.
- Published
- 2013