Photoelectrochemical properties of multi-walled carbon nanotube assembled with CdSe quantum dots

摘要

Recently, there is an increased interest in quantum dot sensitized solar cell (QDSSC), i.e., applying semiconductor quantum dots (QDs) in dye-sensitized solar cells. Thus far, the efficiencies of QDSSCs are rather low. The major challenge of improving the performance of QDSSCs is to inhibit charge recombination at the semiconductor surface. One-dimensional (1D) semiconductors employed as direct electron pathways have proven to provide an effective charge transport. Among these 1D nano-materials, carbon nanotubes (CNTs) have attracted much attention since they provide a large surface area, high electron mobility and chemical stability. It has been reported that the enhanced performance of energy conversion devices can be obtained by using the single wall carbon nanotube due to the decreased charge-transfer resistance [1]. In this work, we report on the MWCNT used as the potential building blocks for light-harvesting assembly.