ダイヤモンド様炭素のPPT及びPLスペクトルに対するsp3/sp2比の影響
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概要
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Since the optical gap of the diamond-like carbon (DLC) varies over a wide range with the ratio of sp3 (diamond like) to sp2 (graphite like) bonds, it is expected to fabricate the high-efficiency multi-junction solar cells that consists of a single material. In the present study, we studied the optical characteristics change of DLC thin films by the sp3/sp2 ratio by using the piezoelectric photothermal (PPT) and the Photoluminescence (PL) techniques. Although, the optical gap estimated from PPT increased with sp3/sp2 ratio, PL peak energy did not change. PL peak may caused by the unknown defect levels.
- 2010-09-30
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