Near Infrared Absorption of CdSexTe1–x Alloyed Quantum Dot Sensitized Solar Cells with More than 6% Efficiency and High Stability

ACS Nano ◽  
2013 ◽  
Vol 7 (6) ◽  
pp. 5215-5222 ◽  
Author(s):  
Zhenxiao Pan ◽  
Ke Zhao ◽  
Jin Wang ◽  
Hua Zhang ◽  
Yaoyu Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Infrared Absorption ◽  
High Stability ◽  
Near Infrared ◽  
Sensitized Solar Cells

Enhanced Performance of Near-Infrared-Absorption CdSeTe Quantum Dot-Sensitized Solar Cells Via Octa-Aminopropyl Polyhedral Oligomeric Silsesquioxane Modification

NANO ◽  
2019 ◽  
Vol 14 (07) ◽  
pp. 1950087
Author(s):  
Zichao Feng ◽  
Ruina Ma ◽  
An Du ◽  
Yinan Zhang ◽  
Xue Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Infrared Absorption ◽  
Near Infrared ◽  
Surface Defects ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Charge Recombination ◽  
Photovoltaic Properties ◽  
Oligomeric Silsesquioxane ◽  
Sensitized Solar Cells

The charge recombination caused by surface defects limits photovoltaic properties of quantum dot-sensitized solar cells (QDSSCs), which can be suppressed by modifying organic or inorganic molecules and atomic ligands. In this paper, octa-aminopropyl polyhedral oligomeric silsesquioxane (OA-POSS) connected and modified near-infrared absorption CdSeTe quantum dots (QDs) through coupling agent (1-ethyl-3-3-dimethylaminopropyl carbodiimide hydrochloride). The results suggest that OA-POSS reduces the surface defects of CdSeTe QDs and suppresses charge recombination. Therefore, the power conversion efficiency improves nearly 41%, which increases from 2.00% to 2.82%.

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).

Quasi-solid-state quantum dot sensitized solar cells with power conversion efficiency over 9% and high stability

2016 ◽  
Vol 4 (38) ◽  
pp. 14849-14856 ◽  
Author(s):  
Wenliang Feng ◽  
Leilei Zhao ◽  
Jun Du ◽  
Yan Li ◽  
Xinhua Zhong
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Stability ◽  
Power Conversion ◽  
Sodium Carboxymethylcellulose ◽  
Liquid Junction ◽  
Sensitized Solar Cells

A highly conductive gel electrolyte based on sodium carboxymethylcellulose was developed to construct quasi-solid-state quantum dot sensitized solar cells that exhibit power conversion efficiency over 9% and a significant improvement in stability compared to liquid-junction QDSCs.

Perovskite-like ceramic hole transport material for quantum dot sensitized solar cells

Solar Energy ◽  
2021 ◽  
Vol 224 ◽  
pp. 355-360
Author(s):  
S. Akhil ◽  
J. Kusuma ◽  
S. Akash ◽  
R. Geetha Balakrishna
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Hole Transport ◽  
Sensitized Solar Cells

scholarly journals Quantum Dot Sensitized Solar Cell: Photoanodes, Counter Electrodes, and Electrolytes

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2638
Author(s):  
Nguyen Thi Kim Chung ◽  
Phat Tan Nguyen ◽  
Ha Thanh Tung ◽  
Dang Huu Phuc
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Quantum Dot ◽  
Photon Absorption ◽  
Dye Molecules ◽  
Charge Generation ◽  
Counter Electrodes ◽  
Advantages And Disadvantages ◽  
Efficiency Performance ◽  
Sensitized Solar Cells

In this study, we provide the reader with an overview of quantum dot application in solar cells to replace dye molecules, where the quantum dots play a key role in photon absorption and excited charge generation in the device. The brief shows the types of quantum dot sensitized solar cells and presents the obtained results of them for each type of cell, and provides the advantages and disadvantages. Lastly, methods are proposed to improve the efficiency performance in the next researching.

Phosphating passivation layer for quantum dot sensitized solar cells

2021 ◽  
Vol 727 ◽  
pp. 138678
Author(s):  
Mei Xin Chen ◽  
Ya Qian Bai ◽  
Xin Na Guan ◽  
Jia Wei Chen ◽  
Jing Hui Zeng
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Passivation Layer ◽  
Sensitized Solar Cells
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