Method for preparing silicon nanowire/carbon nanotube/zinc oxide core/multi-shell nanocomposite and solar cell comprising the nanocomposite

摘要

PURPOSE: A method for manufacturing a silicon nano-wire/zinc oxide core/shell nano composite and a solar cell including the nano composite are provided to use the nano composite as the counter electrode of a dye-sensitized solar cell by forming a zinc oxide. CONSTITUTION: A mono-crystalline silicon substrate is undergone ultraviolet/ozone treatment. The substrate is etched using an etching solution. The etching solution is based on the mixture of HF and AgNO_3. The etched substrate is immerged in a HNO_3 solution in order to eliminate silver dendrite from the substrate. A cleaning process and a drying process are implemented to obtain a silicon substrate. Silicon nano-wires are vertically arranged on the silicon substrate. Zinc source is applied to the silicon substrate, and first purging gas is purged on the silicon substrate. Oxygen source is applied to the silicon substrate, and second purging gas is purged on the silicon substrate.