Formation of CuInAlSe2 film with double graded bandgap using Mo(Al) back contact

Dung Ching Perng; Jhin Wei Chen; Chyi Jeng Wu

doi:10.1016/j.solmat.2010.04.046

Formation of CuInAlSe₂ film with double graded bandgap using Mo(Al) back contact

Dung Ching Perng, Jhin Wei Chen, Chyi Jeng Wu

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27 Citations (Scopus)

Abstract

Using Al added Mo back electrode to provide Al source to form CuInAlSe ₂ (CIAS) absorber with self-formed double graded bandgap (or Al concentration) is reported. The double Al grading is self-forming and requires no process tweaking or modification. A 15 at % Al in Mo(Al) film yielded 0.39 Al/(InAl) ratio in the CIAS film with a bandgap of 1.54 eV at the surface. The benefits of doping Al into Mo film are: lower resistance of the Mo layer, improved Mo to glass adhesion, increased surface electric field or improved minority carrier collection from the graded Al content (graded bandgap), and supply Al to form a CIAS absorber layer.

Original language	English
Pages (from-to)	257-260
Number of pages	4
Journal	Solar Energy Materials and Solar Cells
Volume	95
Issue number	1
DOIs	https://doi.org/10.1016/j.solmat.2010.04.046
Publication status	Published - 2011 Jan 1

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All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

Cite this

Perng, D. C., Chen, J. W., & Wu, C. J. (2011). Formation of CuInAlSe₂ film with double graded bandgap using Mo(Al) back contact. Solar Energy Materials and Solar Cells, 95(1), 257-260. https://doi.org/10.1016/j.solmat.2010.04.046

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10.1016/j.solmat.2010.04.046