Synthesis of co-doped Yb 3+ -Er 3+ :ZrO 2 upconversion nanoparticles and their applications in enhanced photovoltaic properties of quantum dot sensitized solar cells

2017 ◽  
Vol 698 ◽  
pp. 433-441 ◽  
Author(s):  
D. Ramachari ◽  
D. Esparza ◽  
T. López-Luke ◽  
V.H. Romero ◽  
L. Perez-Mayen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Upconversion Nanoparticles ◽  
Photovoltaic Properties ◽  
Sensitized Solar Cells ◽  
Co Doped

High efficiency CdS quantum-dot-sensitized solar cells with boron and nitrogen co-doped TiO2 nanofilm as effective photoanode

2015 ◽  
Vol 169 ◽  
pp. 103-108 ◽  
Author(s):  
Ling Li ◽  
Junying Xiao ◽  
Xichuan Yang ◽  
Wenming Zhang ◽  
Huayan Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
High Efficiency ◽  
Doped Tio2 ◽  
Cds Quantum Dot ◽  
Sensitized Solar Cells ◽  
Co Doped

scholarly journals Performance Study of CdS/Co-Doped-CdSe Quantum Dot Sensitized Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Xiaoping Zou ◽  
Sheng He ◽  
Gongqing Teng ◽  
Chuan Zhao
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Performance Study ◽  
Co Doping ◽  
Transfer Path ◽  
Layer Adsorption ◽  
Cdse Quantum Dot ◽  
Cascade Energy ◽  
Sensitized Solar Cells ◽  
Co Doped

In order to optimize the charge transfer path in quantum dot sensitized solar cells (QDSCs), we employed successive ionic layer adsorption and reaction method to dope CdSe with Co for fabricating CdS/Co-doped-CdSe QDSCs constructed with CdS/Co-doped-CdSe deposited on mesoscopic TiO2film as photoanode, Pt counter electrode, and sulfide/polysulfide electrolyte. After Co doping, the bandgap of CdSe quantum dot decreases, and the conduction band and valence band all improve, forming a cascade energy level which is more conducive to charge transport inside the solar cell and reducing the recombination of electron-hole thus improving the photocurrent and ultimately improving the power conversion efficiency. This work has not been found in the literature.

Optical and Photovoltaic Properties of CdS/Ag2S Quantum Dots Co-Sensitized-Solar Cells

2013 ◽  
Vol 761 ◽  
pp. 15-18 ◽  
Author(s):  
Auttasit Tubtimtae ◽  
Ming Way Lee
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Near Infrared ◽  
Energy Gap ◽  
Photocurrent Density ◽  
Infrared Region ◽  
Open Circuit ◽  
Photovoltaic Properties ◽  
Different Characteristics ◽  
Sensitized Solar Cells

Subscript textWe present a co-sensitization of CdS/Ag2S quantum-dot as sensitizers for solar cells. The optical properties of single and double-layered quantum-dot conditions were monitored using UV-Vis spectrophotometer. The results show that the different characteristics of absorption spectra depended on the types of QDs, indicating to the different energy gap of each QDs deposited on TiO2 surface and the tunable absorption ranges of the sample of double-layered quantum-dot-sensitized TiO2 electrodes are broader and the absorption intensity are higher than the single-layered quantum-dot, attributed to the co-absorption of two QDs to the light and both CdS and Ag2S are activated in visible to near-infrared region (450-1100 nm). The photovoltaic data shows that the highest efficiency of 1.41% with a photocurrent density, Jsc of 20.6 mA/cm2, an open-circuit voltage, Voc of 0.32 V and a fill factor, FF of 21.3% were yielded by the sample of CdS(3)/Ag2S(4) as an optimum condition of dipping cycles for CdS and Ag2S under irradiance of 100 mW/cm2 (AM 1.5G).

Effect of ZnS coating on the photovoltaic properties of CdSe quantum dot-sensitized solar cells

2008 ◽  
Vol 103 (8) ◽  
pp. 084304 ◽  
Author(s):  
Qing Shen ◽  
Junya Kobayashi ◽  
Lina J. Diguna ◽  
Taro Toyoda
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Photovoltaic Properties ◽  
Cdse Quantum Dot ◽  
Sensitized Solar Cells
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