Optical Absorption and Electrical Conductivity of Amorphous Carbon Thin Films from Camphor: A Natural Source
Optical Absorption and Electrical Conductivity of Amorphous Carbon Thin Films from Camphor: A Natural Source
复制标题
樟脑非晶碳薄膜的光吸收和导电性：天然来源
DOI：
10.1143/jjap.38.658
复制
发表时间：
1999
影响因子：
1.5
通讯作者：
M. Umeno
中科院分区：
文献类型：
--
作者：
S. M. Mominuzzaman;K. Krishna;T. Soga;T. Jimbo;M. Umeno
用简单的离子束溅射法在n型单晶硅和石英衬底上沉积了碳薄膜。已获得的光学吸收系数为104-105 cm-1的沉积和退火后的薄膜和退火后的吸收系数增加。从光学吸收测量得到的沉积态碳薄膜的光学带隙能量为0.5eV。退火对各种光学和电学性质的影响进行了研究，根据这些薄膜的半导体性质，通过导电机制。所得结果进行了讨论，并与文献进行了比较。
Thin films of carbon have been deposited on n-type single-crystal silicon and quartz substrates by simple ion beam sputtering of camphoric carbon, obtained from camphor, a natural source. Optical absorption coefficients of 104–105 cm-1 have been obtained for the as-deposited and annealed films and the absorption coefficient increased upon annealing. The optical band-gap energy of the as-deposited camphoric carbon thin film derived from optical absorption measurements is 0.5 eV. Effects of annealing on various optical and electrical properties are studied, in light of the semiconducting nature of these films, through the electrical conduction mechanism. The results obtained are discussed and compared with the literature.