White Photoluminescence from Carbon-Incorporated Silica Fabricated from Rice Husk

White Photoluminescence from Carbon-Incorporated Silica Fabricated from Rice Husk

White photoluminescence (PL) from thermally treated rice husk is demonstrated. The strongest PL is obtained after oxidation at 400 °C following carbonization at 600 °C. The PL intensity was strong enough to be detected by the naked eye in daylight under the irradiation of 370 nm light from a light-e...

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Veröffentlicht in:Japanese Journal of Applied Physics 2012-01, Vol.51 (1), p.01AK02-01AK02-5
Hauptverfasser: Ishikawa, Yukari, Kawasaki, Shinji, Ishi, Yosuke, Sato, Koji, Matsumura, Akihiro
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container_title Japanese Journal of Applied Physics
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creator Ishikawa, Yukari
Kawasaki, Shinji
Ishi, Yosuke
Sato, Koji
Matsumura, Akihiro
description White photoluminescence (PL) from thermally treated rice husk is demonstrated. The strongest PL is obtained after oxidation at 400 °C following carbonization at 600 °C. The PL intensity was strong enough to be detected by the naked eye in daylight under the irradiation of 370 nm light from a light-emitting-diode (LED)-type flashlight. Thermal treatment changes rice husk to silicon oxycarbide but the amorphous structure and cell-wall architecture of the plants are maintained. The origin of PL is speculated to be related to some centers or defects in strained silicon oxycarbide.
doi_str_mv 10.1143/JJAP.51.01AK02
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title White Photoluminescence from Carbon-Incorporated Silica Fabricated from Rice Husk
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