Enhanced transmittance of glass plates for solar cells using nano-imprint lithography

• Published in: Solar energy materials and solar cells Vol. 94; no. 3; pp. 583 - 587
• Main Authors: Han, Kang-Soo, Shin, Ju-Hyeon, Lee, Heon
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-03-2010
• Subjects: Anti-reflection; Glass; Lithography; Moth-eye; Nano-imprint lithography; Nanocomposites; Nanomaterials; Nanostructure; Photovoltaic cells; Plates; Quantum efficiency; Reflection; Solar cells; Transmittance; Quantum efficiency; Moth-eye; Transmittance; Anti-reflection; Nano-imprint lithography
• ISSN: 0927-0248; 1879-3398
• DOI: 10.1016/j.solmat.2009.12.001

A nanometer scale polymer pattern was formed on the surface of a glass plate by nano-imprint lithography with the aim of reducing the reflection of light at the surface. Since this polymeric nano-pattern is smaller than the wavelength of light, the effective refractive index near the surface changes gradually, and reduces the amount of reflection. Such a nano-pattern was formed on one or both sides of a glass plate, which will be used as the protective layer for solar cell devices. As a result, a solar cell with a both-side patterned glass plate as a protective layer showed up to 2.5% increase (5.14–5.27%) in total conversion efficiency, compared to a solar cell with a bare glass plate.