Constructing cellular networkTiO2photoanode for simultaneous regulation of charge transport and light harvesting properties of quantum dots sensitized solar cells

2019 ◽  
Vol 45 (3) ◽  
pp. 3715-3722 ◽  
Author(s):  
Jing Ge ◽  
Weixin Li ◽  
Lei Zhao ◽  
Yuxuan Li ◽  
Xuan He ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Charge Transport ◽  
Light Harvesting ◽  
Sensitized Solar Cells

scholarly journals PREPARED QUANTUM DOTS SENSITIZED SOLAR CELLS BASED ON TiO2/CdS:Mn2+/CdSe PHOTOANODE

2018 ◽  
Vol 34 (3) ◽  
Author(s):  
Ha Thanh Tung
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Solar Cells ◽  
Doping Concentration ◽  
Light Harvesting ◽  
Sensitized Solar Cells

In this study, we have prepared and investigated the optical properties of the TiO2/CdS:Mn2+/CdSe photoanode as the function of Mn2+ doping concentration and thickness. The results show that the peaks of the UV-Vis spectra shifted toward longer wavelength while Mn2+ doping concentrations or thickness of the films were changed. The main cause of the red-shifting in UV-Vis spectra may come from the increasing of photoanode light-harvesting capacity. In addition, the results also demonstrated by the boosting performance of quantum dots sensitized solar cells from 2.07% for TiO2/CdS/CdSe photoanode to 2.5% for TiO2/CdS:Mn2+/CdSe photoanode.

Titanium mesh based fully flexible highly efficient quantum dots sensitized solar cells

2017 ◽  
Vol 5 (11) ◽  
pp. 5577-5584 ◽  
Author(s):  
Zhonglin Du ◽  
Mingdian Liu ◽  
Yan Li ◽  
Yanxue Chen ◽  
Xinhua Zhong
Keyword(s):  
Quantum Dots ◽  
Catalytic Activity ◽  
Solar Cells ◽  
Light Harvesting ◽  
Titanium Mesh ◽  
Highly Efficient ◽  
Sensitized Solar Cells ◽  
Ti Mesh

Benefiting from the in situ growth of ZnO/ZnSe/CdSe heterojunction photoanodes with effective light harvesting capacity and the highly catalytic activity of MC/Ti CEs, flexible Ti mesh-based QDSCs were assembled successfully and exhibited a new efficiency record for flexible QDSCs with champion PCE of 5.08%.

scholarly journals TiO2 Passivation Layer on ZnO Hollow Microspheres for Quantum Dots Sensitized Solar Cells with Improved Light Harvesting and Electron Collection

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 631 ◽  
Author(s):  
Zhen Li ◽  
Libo Yu ◽  
Hao Wang ◽  
Huiwen Yang ◽  
Huan Ma
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Hollow Microsphere ◽  
Hollow Microspheres ◽  
Passivation Layer ◽  
Electron Recombination ◽  
Electron Collection ◽  
Sensitized Solar Cells

Light harvesting and electron recombination are essential factors that influence photovoltaic performance of quantum dots sensitized solar cells (QDSSCs). ZnO hollow microspheres (HMS) as architectures in QDSSCs are beneficial in improving light scattering, facilitating the enhancement of light harvesting efficiency. However, this advantage is greatly weakened by defects located at the surface of ZnO HMS. Therefore, we prepared a composite hollow microsphere structure consisting of ZnO HMS coated by TiO2 layer that is obtained by immersing ZnO HMS architectures in TiCl4 aqueous solution. This TiO2-passivated ZnO HMS architecture is designed to yield good light harvesting, reduced charge recombination, and longer electron lifetime. As a result, the power conversion efficiency (PCE) of QDSSC reaches to 3.16% with an optimal thickness of TiO2 passivation layer, which is much higher when compared to 1.54% for QDSSC based on bare ZnO HMS.

scholarly journals Charge transport and electron recombination suppression in dye-sensitized solar cells using graphene quantum dots

2019 ◽  
Vol 13 ◽  
pp. 102171 ◽  
Author(s):  
N. Fadzilah M. Sharif ◽  
M.Z.A.A. Kadir ◽  
Suhaidi Shafie ◽  
Suraya Abdul Rashid ◽  
W.Z. Wan Hasan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Charge Transport ◽  
Graphene Quantum Dots ◽  
Dye Sensitized Solar Cells ◽  
Electron Recombination ◽  
Recombination Suppression ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Co-sensitization promoted light harvesting for plastic dye-sensitized solar cells

2011 ◽  
Vol 196 (4) ◽  
pp. 2416-2421 ◽  
Author(s):  
Kun-Mu Lee ◽  
Ying-Chan Hsu ◽  
Masashi Ikegami ◽  
Tsutomu Miyasaka ◽  
K.R. Justin Thomas ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

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.

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