ZnO is a semiconductor material
A peculiarity ofZnOnanowire : many novel magnetic, electrical and optical properties
Various approaches ofZnOnanowire : vapor-phase method, rapid thermal evaporation, sputter deposition, template-assisted growth, chemical vapor deposition (CVD)
A vapor trapping design to modify the CVD synthesis process to facilitate and control the introduction of n-typ
Electrolyte를 붙이거나 하는 방법 등이 있다.
Polyelectrolytes를 붙임을 통해 Metal oxide Nanotube를 만드는 방법을 살펴보면, 우선 틀이 되는 CNT에 Layer-by-Layer assembly를 통해 polyelectrolytes를 붙인다. 그 다음, 이온화합물 상태의 목표 금속(산화물이 될)을 이온 상태의 복합체 (Ion Complex)를 형성할 수 있도록 준비한
ZnO nanorods are not synthesized through the layer-by-layer growth model. It is noticed that under the bottom of nanorods, ZnO layer with the 608 angle between the nearest neighbors is formed on the side-wall of central axial nanowires, as shown with white arrow in Fig. 1(e) and (f); Meanwhile, the large nanoclusters are found existing on the bottom of nanorods, as shown with black arrows in Fig.
The crystal structure is a member of the hexagonal crystal system and consists of tetrahedrally coordinated Zinc and Sulfur atoms that are stacked in an ABABAB pattern.
The structure is closely related to the structure of lonsdaleite, or hexagonal diamond.
As there all orientations of the crystal, rings of different 2θ values are formed
A single crystal specimen in a Bragg-Brentano diffrac
* Dye is varied depending on the
type of substituent X
* 3 conditions are needed
- absorb all visible light.
- bond with nano-oxided substance.
- resist against heat and optics.
* Dye have a major impact in the
efficient of DSSCs
1.Illumination of Sunlight
- Absorbed by Dye sensitized.
2. Excited Dye molecule injects
electron to TiO2.