Novel bifunctional aromatic linker utilized in CdSe quantum dots-sensitized solar cells: boosting the open-circuit voltage and electron injection

2017 ◽  
Vol 5 (27) ◽  
pp. 14319-14330 ◽  
Author(s):  
Wei-Lu Ding ◽  
Xing-Liang Peng ◽  
Zhu-Zhu Sun ◽  
Ze-Sheng Li
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Open Circuit Voltage ◽  
Electron Injection ◽  
Open Circuit ◽  
Cdse Quantum Dots ◽  
Sensitized Solar Cells

The designed novel PDTCA series linkers.

scholarly journals CdSe Quantum Dots Sensitized Mesoporous TiO2Solar Cells with CuSCN as Solid-State Electrolyte

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Guanbi Chen ◽  
Lei Wang ◽  
Yu Zou ◽  
Xia Sheng ◽  
Hongjuan Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solid State ◽  
Barrier Layer ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Cdse Quantum Dots ◽  
Solid State Electrolyte ◽  
Capping Agents ◽  
Organic Capping

Mesoporous TiO2is functionalized by 3-mercaptopropyl trimethyoxysilane (MPTMS) to anchor CdSe quantum dots (QDs). The resulting TiO2/CdSe is combined with solid-state electrolyte (CuSCN) to form solar cells. It is found that the efficiency of electron injection from QDs to TiO2can be improved owing to the substitution of the long chains of organic capping agents at the surface of QDs with MPTMS. The hydrolyzate of MPTMS forms an insulating barrier layer to reduce the recombination at the TiO2/CdSe interface, leading to the increase of open-circuit voltage (Voc).

The photovoltaic performance of Ag2S quantum dots-sensitized solar cells using plasmonic Au nanoparticles/TiO2 working electrodes

2018 ◽  
Vol 32 (16) ◽  
pp. 1850172 ◽  
Author(s):  
Ali Badawi ◽  
Nasser Y. Mostafa ◽  
Najm M. Al-Hosiny ◽  
Amar Merazga ◽  
Ateyyah M. Albaradi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Electron Microscope ◽  
Au Nanoparticles ◽  
Open Circuit Voltage ◽  
Photovoltaic Performance ◽  
Open Circuit ◽  
Morphological Properties ◽  
Au Nps ◽  
Sensitized Solar Cells

The photovoltaic performance of silver sulfide (Ag2S) quantum dots-sensitized solar cells (QDSSCs) using different concentrations (0, 0.05, 0.1, 0.3 and 0.5 wt.%) of plasmonic Au nanoparticles (NPs)/titania (TiO2) electrodes has been investigated. Ag2S quantum dots (QDs) were adsorbed onto the Au NPs/titania electrodes using the successive ionic layer adsorption and reaction (SILAR) deposition technique. The morphological properties of the Au NPs and the prepared titania electrodes were characterized using transmission electron microscope (TEM) and scanning electron microscope (SEM), respectively. The energy-dispersive X-ray (EDX) spectra of the bare titania and Ag2S QDs-sensitized titania electrodes were recorded. The optical properties of the prepared Ag2S QDs-sensitized titania electrodes were measured using a UV–visible spectrophotometer. The estimated energy band gap of Ag2S QDs-sensitized titania electrodes is 1.96 eV. The photovoltaic performance of the assembled Ag2S QDSSCs was measured under 100 mW/cm2 solar illumination. The optimal photovoltaic parameters were obtained as follows: open circuit voltage [Formula: see text] = 0.50 V, current density [Formula: see text] = 3.18 mA/cm2, fill factor (FF) = 0.35 and energy conversion efficiency [Formula: see text] = 0.55% for 0.3 wt.% of Au NPs/titania electrode. These results are attributed to the enhancement in the absorption and decrease in the electron–hole pairs recombination rate. The open circuit voltage decay (OCVD) measurements of the assembled Ag2S QDSSCs were measured. The calculated electron lifetime [Formula: see text] in Ag2S QDSSCs with Au NPs/titania electrodes is at least one order of magnitude more than that with bare titania electrode. The cut-on–cut-off cycles of the solar illumination measurements show the rapid sensitivity and good reproducibility of the assembled Ag2S QDSSCs.

Anisotropic Nanostructure ZnO Photoelectrodes for CdS/CdSe Quantum Dot Sensitized Solar Cells

2013 ◽  
Vol 873 ◽  
pp. 556-561
Author(s):  
Jian Jun Tian
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Chemical Bath Deposition ◽  
Cdse Quantum Dots ◽  
Silar Method ◽  
Nanorods Array ◽  
Cdse Quantum Dot ◽  
Cbd Method ◽  
Sensitized Solar Cells

CdS/CdSe quantum dots co-sensitized solar cells (QDSCs) were prepared by combining the successive ion layer absorption and reaction (SILAR) method and chemical bath deposition (CBD) method for the fabrication of CdS and CdSe quantum dots, respectively. In this work, we designed anisotropic nanostructure ZnO photoelectrodes, such as nanorods/nanosheets and nanorods array, for CdS/CdSe quantum dots co-sensitized solar cells. Our study revealed that the performance of QDSCs could be improved by modifying surface of ZnO to increase the loading of quantum dots and reduce the charge recombination.

Ag+ ion doped on the CdSe quantum dots for quantum-dot-sensitized solar cells’ application

2019 ◽  
Vol 125 (8) ◽  
Author(s):  
Ha Thanh Tung ◽  
Doan Van Thuan ◽  
Jun Hieng Kiat ◽  
Dang Huu Phuc
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Cdse Quantum Dots ◽  
Sensitized Solar Cells

scholarly journals ZnS/SiO2 Passivation Layer for High-Performance of TiO2/CuInS2 Quantum Dot Sensitized Solar Cells

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1931
Author(s):  
Hee-Je Kim ◽  
Jin-Ho Bae ◽  
Hyunwoong Seo ◽  
Masaharu Shiratani ◽  
Chandu Venkata Veera Muralee Gopi
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Charge Recombination ◽  
Open Circuit ◽  
Passivation Layer ◽  
Voltage Decay ◽  
Sensitized Solar Cells ◽  
Η Value

Suppressing the charge recombination at the interface of photoanode/electrolyte is the crucial way to improve the quantum dot sensitized solar cells (QDSSCs) performance. In this scenario, ZnS/SiO2 blocking layer was deposited on TiO2/CuInS2 QDs to inhibit the charge recombination at photoanode/electrolyte interface. As a result, the TiO2/CuInS2/ZnS/SiO2 based QDSSCs delivers a power conversion efficiency (η) value of 4.63%, which is much higher than the TiO2/CuInS2 (2.15%) and TiO2/CuInS2/ZnS (3.23%) based QDSSCs. Impedance spectroscopy and open circuit voltage decay analyses indicate that ZnS/SiO2 passivation layer on TiO2/CuInS2 suppress the charge recombination at the interface of photoanode/electrolyte and enhance the electron lifetime.

Investigating the Role of Dye Dipole on Open Circuit Voltage in Solid-State Dye-Sensitized Solar Cells

2011 ◽  
Vol 50 (6) ◽  
pp. 06GF08 ◽  
Author(s):  
Shyam S. Pandey ◽  
Kyung-Young Lee ◽  
Azwar Hayat ◽  
Yuhei Ogomi ◽  
Shuzi Hayase
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Open Circuit Voltage ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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