论文部分内容阅读
用纳米硅(ncSi∶H)薄膜制成了隧道二极管,并在其IV曲线上发现了不连续的量子化台阶.二极管的IV曲线可分成二部分:(1)0—7V,电流随外加电压增大而增大;(2)7—9V,电流随外加电压急剧增大并出现三个量子化台阶.量子化台阶的出现直接与纳米硅中的晶粒有关,根据ncSi∶H的独特结构,对载流子的传导通道进行了讨论;用通过ncSi∶H中量子点的共振隧穿对IV曲线进行了初步解释.
A tunnel diode was fabricated from a nanocrystalline silicon (nc-Si: H) thin film and a discontinuous quantization step was found on its I-V curve. Diode I V curve can be divided into two parts: (1) 0-7V, the current increases with the increase of applied voltage; (2) 7-9V, the current rapidly increases with the applied voltage and the emergence of three quantization steps. The appearance of the quantization step is directly related to the grains in the nano-silicon. According to the unique structure of nc-Si: H, the conduction channel of the carrier is discussed. The resonant tunneling through the quantum dots in nc-Si: H The I V curve was initially explained.