Highly Efficient Inverted Type-I CdS/CdSe Core/Shell Structure QD-Sensitized Solar Cells

ACS Nano ◽  
2012 ◽  
Vol 6 (5) ◽  
pp. 3982-3991 ◽  
Author(s):  
Zhenxiao Pan ◽  
Hua Zhang ◽  
Kan Cheng ◽  
Yumei Hou ◽  
Jianli Hua ◽  
...  
Keyword(s):  
Solar Cells ◽  
Shell Structure ◽  
Core Shell ◽  
Type I ◽  
Cdse Core ◽  
Highly Efficient ◽  
Core Shell Structure ◽  
Sensitized Solar Cells

Photoelectrical properties of CdS/CdSe core/shell QDs modified anatase TiO2 nanowires and their application for solar cells

2017 ◽  
Vol 19 (24) ◽  
pp. 15724-15733 ◽  
Author(s):  
Qingqing Qiu ◽  
Ping Wang ◽  
Lingling Xu ◽  
Dejun Wang ◽  
Yanhong Lin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Shell Structure ◽  
Anatase Tio2 ◽  
Core Shell ◽  
Type I ◽  
Cdse Core ◽  
Tio2 Nanowires ◽  
Photoelectrical Properties ◽  
Core Shell Structure ◽  
Post Synthesis

Anatase TiO2 nanowire (NW) films modified with inverted type-I CdS/CdSe core/shell structure QDs have been successfully prepared by the post synthesis ligand-assisted technique.

Characterization of a TiO2/Multi-Wall Carbon Nanotube Core–Shell Nanocomposite Synthesized by a Hydrothermal Method

2020 ◽  
Vol 20 (6) ◽  
pp. 3582-3587 ◽  
Author(s):  
Moo-Hyun Seo ◽  
Kyeong-Han Na ◽  
Wan-Hee Yang ◽  
Tae-Hyeob Song ◽  
Won-Youl Choi
Keyword(s):  
Solar Cells ◽  
Electron Microscope ◽  
Carbon Nanotube ◽  
Charge Transport ◽  
Shell Structure ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Dye Sensitized ◽  
Core Shell Structure ◽  
Sensitized Solar Cells

TiO2 is a significant n-type semiconducting material because of its superior electric and photocatalytic properties. Although this material has been extensively studied as a semiconductor electrode for dye-sensitized solar cells for its inherent bandgap and its excellent electrical and chemical properties, the photoelectric efficiency is nevertheless lower than that of the Si-based solar cells, which is generally reported as 13–27%. On the other hand, various carbon structures have been studied to increase the overall charge transport efficiency by reducing the charge transport resistance in the cell while having high electric conductivity. These results are expected to improve the photoelectric conversion efficiency when applied to dye-sensitized solar cells. We fabricated a TiO2/multi-wall carbon nanotube (MWCNT) core–shell structure by a hydrothermal method. The TiO2 anatase phase in the TiO2/MWCNT core–shell structure was confirmed by X-ray diffraction (XRD). The core–shell nanostructure with a diameter of 127 nm to 211 nm was observed by field emission scanning electron microscope (FE-SEM). The morphology of the TiO2/MWCNT core–shell nanocomposite was also analyzed by transmission electron microscope (TEM). The Fourier-Transform Infrared Spectrometer (FT-IR) and Brunauer Emmett and Teller (BET) method were used to observe the chemical bonding and specific surface area of the TiO2/MWCNT core–shell nanocomposite, respectively. The TiO2/MWCNT core–shell composites had a larger specific surface area of 92.00 m2/g, a larger pore volume of 0.33 cm3/g, and a larger pore size of 65.21 nm than commercial TiO2 nanoparticles (P25). The TiO2/MWCNT core–shell structure may provide a high-speed path for photoelectrons to pass quickly and will be useful for various applications, such as solar cells and photocatalysts.

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