Journal
JOURNAL OF POROUS MATERIALS
Volume 23, Issue 5, Pages 1217-1225Publisher
SPRINGER
DOI: 10.1007/s10934-016-0180-5
Keywords
Carbon aerogels; Self-assembly; Low-density; Broadband antireflective; Ultra-black materials
Funding
- National Natural Science Foundation of China [51502274]
- Science and Technology Development Foundation of China Academy of Engineering Physics [2015B0302003, 2013A0302016, 2013B0302051]
- China Postdoctoral Science Foundation [2015M572499]
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Carbon aerogels with various densities, even as low as 20 mg/cm(3), were fabricated by pyrolysis of organic aerogels formed by aqueous condensation of resorcinol and formaldehyde. It was found that carbon aerogels with the density below 70 mg/cm(3) exhibited the total reflectance values of typically less than 0.24 % across wavelengths in the range of 400-2000 nm. The change of antireflective properties between the lowest-density carbon aerogel monolith and its powder coating was discussed. Furthermore, we studied the effect of the density on the structure and antireflective property of carbon aerogels. As a result, the low-density carbon aerogels showed broadband low-reflectivity and high absorption to incident light.
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