Vanadium dioxide thin films were fabricated by RF magnetron sputtering and annealing in nitrogen. The effects of sputtering power on resistance-temperature property were investigated. X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS) were employed to study and analyze the structure of crystalline units and the phase composition of th...
Vanadium oxide thin films were deposited by reactive direct current facing targets magnetron sputtering, and then annealed in oxygen ambience under different temperature to fabricate phase transition vanadium dioxide thin films with different grain size. The transformation of resistance and transmittance of vanadium oxide thin films were measured a...
Y(NO(3))center dot 6H(2)O-doped ZnO-Bi(2)O(3)-based varistor ceramics were prepared using a solid reaction route. The microstructure, electrical properties, degradation coefficient (D(V)), and dielectric characteristics of varistor ceramics were studied in this paper. With increasing amounts of Y(NO(3))(3)center dot 6H(2)O in the starting compositi...
We have performed a systematic first-principles investigation to calculate the electronic structures, mechanical properties, and phonon-dispersion curves of NpO2. The local-density approximation+U and the generalized gradient approximation+U formalisms have been used to account for the strong on-site Coulomb repulsion among the localized Np 5f elec...
Both In2O3 and ZnO are potential oxide semiconductor materials for optoelectronics devices. Semi-polar (101) plane wurtzite (w-)ZnO films were grown on bcc-In2O3(111) by metal organic chemical vapor deposition and the epitaxial relation is w-ZnO(101) parallel to bcc-In2O3(111). We have measured the valence band offset (VBO) of w-ZnO(101)/bcc-In2O3(...
SnS/SnO heterojunction structured nanocrystals with zigzag rod-like connected morphology were prepared by using a simple two-step method. Bulk heterojunction solar cells were fabricated using the SnS/SnO nanocrystals blended with poly(2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylene vinylene) (MDMO-PPV) as the active layer. Compared with solar ce...
目錄 i 圖目錄 v 表目錄 vii 致謝 viii 縮寫對照表 x 中文摘要 xi Abstract xiii 第一章 緒論 1 第一節 前言 1 第二節 文獻回顧 2 一、 老化對腦部與神經系統之影響 2 1. 老化對腦部之影響 2 2. 老化對神經傳導系統之影響 2 二、 老化對抗氧化防禦系統之影響 5 1. 抗氧化防禦系統與老化之影響 6 三、 老化對行為能力之影響 11 四、 硒之介紹 12 1. 硒之介紹 12 2. 硒之建議量、缺乏症及硒中毒 12 3. 硒之化學形式 16 4. 硒的消化、吸收及代謝 21 5. 硒之功效 23 五、 老化對腦部蛋白質體之影響 24 1. 蛋白質體學 (proteomics) 之定義 24 2. 蛋白質體學之研究工具 25 3. 蛋白質體學在腦...
Hierarchical heterostructures of zinc antimonate nanoislands on ZnO nanobelts were prepared by simple annealing of the polymeric precursor. Sb can promote the growth of ZnO nanobelts along the [552] direction because of the segregation of Sb dopants on the +(001) and (110) surfaces of ZnO nanobelts. Furthermore, the ordered nanoislands of toothlike...
Using the first-principles methods, we study the electronic structure, intrinsic and extrinsic defects doping in transparent conducting oxides CuGaO2. Intrinsic defects, acceptor-type and donor-type extrinsic defects in their relevant charge state are considered. The calculation result show that copper vacancy and oxygen interstitial are the releva...
