Pyrolytic carbon coated black silicon

Ali Shah, Petri Stenberg, Lasse Karvonen, Rizwan Ali, Seppo Honkanen, Harri Lipsanen, N. Peyghambarian, Markku Kuittinen, Yuri Svirko, Tommi Kaplas

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Carbon is the most well-known black material in the history of man. Throughout the centuries, carbon has been used as a black material for paintings, camouflage, and optics. Although, the techniques to make other black surfaces have evolved and become more sophisticated with time, carbon still remains one of the best black materials. Another well-known black surface is black silicon, reflecting less than 0.5% of incident light in visible spectral range but becomes a highly reflecting surface in wavelengths above 1000 nm. On the other hand, carbon absorbs at those and longer wavelengths. Thus, it is possible to combine black silicon with carbon to create an artificial material with very low reflectivity over a wide spectral range. Here we report our results on coating conformally black silicon substrate with amorphous pyrolytic carbon. We present a superior black surface with reflectance of light less than 0.5% in the spectral range of 350 nm to 2000 nm.

Original languageEnglish (US)
Article number25922
JournalScientific reports
Volume6
DOIs
StatePublished - May 13 2016

ASJC Scopus subject areas

  • General

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    Shah, A., Stenberg, P., Karvonen, L., Ali, R., Honkanen, S., Lipsanen, H., Peyghambarian, N., Kuittinen, M., Svirko, Y., & Kaplas, T. (2016). Pyrolytic carbon coated black silicon. Scientific reports, 6, [25922]. https://doi.org/10.1038/srep25922