@article{oai:miyazaki-u.repo.nii.ac.jp:00004239, author = {丁, 文 and 中野, 陽介 and Nakano, Yosuke and Nakano, Yousuke and 山元, 亮一 and Yamamoto, Ryoichi and 境, 健太郎 and Sakai, Kentaro and 中澤, 日出樹 and Fukuyama, Atsuhiko and 福山, 敦彦 and Ikari, Tetsuo and 碇, 哲雄 and Ding, Wen and 中野, 陽介 and Nakano, Yosuke and Nakano, Yousuke and Nakazawa, Hideki}, journal = {Energy Procedia}, month = {}, note = {Temperature dependences of the optical gap of diamond-like carbon (DLC) films were investigated by using a piezoelectric photothermal (PPT) spectroscopy, that detects the nonradiative transition of photoexcited electrons. Since the PPT signal intensity is expected to be proportional to its optical absorption coefficient, the optical gap was estimated by a Tauc plot. The temperature coefficient of the optical gap energy was found to be very small compared with that of other semiconductor such as Si. This result implies that the device performance is expected to be stable by temperature change and the DLC films are excellent as the next generation solar cells materials.}, pages = {66--70}, title = {Temperature dependence of the optical gap of diamond-like carbon films investigated by a piezoelectric photothermal spectroscopy}, volume = {10}, year = {2011}, yomi = {ナカノ, ヨウスケ and ヤマモト, リョウイチ and サカイ, ケンタロウ and ナカザワ, ヒデキ and フクヤマ, アツヒコ and イカリ, テツオ and ナカノ, ヨウスケ} }