Strategies for extending charge separation in colloidal nanostructured quantum dot materials

2019 ◽  
Vol 21 (42) ◽  
pp. 23283-23300 ◽  
Author(s):  
Partha Maity ◽  
Hirendra N. Ghosh
Keyword(s):  
Solar Cell ◽  
Quantum Dot ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Charge Separation ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Colloidal Nanocrystals

Different processes are involved in a quantum dot sensitized solar cell (QDSC). This article reviews the probable ways to extend charge separation in colloidal nanocrystals for the elevation of solar to electrical energy conversion efficiency in QDSCs.

Research Progress of Quantum Dot Solar Cell

2013 ◽  
Vol 320 ◽  
pp. 693-697
Author(s):  
Wei Cui ◽  
Chong Wang ◽  
Yu Yang
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Quantum Dot ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Large Scale ◽  
Energy Conversion Efficiency ◽  
Research Progress ◽  
Cds Quantum Dot ◽  
Sensitized Solar Cells

The solar energy is the most promising energy to solve energy crisis and environmental problem. Quantum dot can be applied to solar cells in two structures of QDSC to improve the energy conversion efficiency. The two structures are p-i-n type QDSC and quantum dots sensitized solar cells. The energy conversion efficiency of p-i-n type QDSC may increase up to 45%. Both CdSe and CdS quantum dot can be used as the sensitizer of the QDSSC and each of them has its demerits and merits, but the conversion efficiency of QDSSC is low if they were used respectively. Thus, in order to overcome their demerits respectively, we could try to combine their merits. QDSC is the most promising technique to solve the problems of solar cell. But before large-scale application their efficiency and stability should be improved.

Ca-doped CuS/graphene sheet nanocomposite as a highly catalytic counter electrode for improving quantum dot-sensitized solar cell performance

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10880-10886 ◽  
Author(s):  
Seyede Sara Khalili ◽  
Hossein Dehghani
Keyword(s):  
Solar Cell ◽  
Quantum Dot ◽  
Energy Conversion ◽  
Graphene Sheet ◽  
Conversion Efficiency ◽  
Counter Electrode ◽  
Energy Conversion Efficiency ◽  
Cell Performance ◽  
Solar Cell Performance

In this study, the highest energy conversion efficiency is obtained by Ca- CuS/GS CE, corresponding to efficiency increment (70%) compared to the CuS bare CE.

The Effect of Temperature on Anatase TiO2 Photoanode for Dye Sensitized Solar Cell

2018 ◽  
Vol 273 ◽  
pp. 146-153 ◽  
Author(s):  
Nurnaeimah Jamalullail ◽  
Ili Salwani Mohamad ◽  
Mohd Natashah Norizan ◽  
Norsuria Mahmed
Keyword(s):  
Solar Cell ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Annealing Temperature ◽  
Energy Conversion Efficiency ◽  
Semiconductor Material ◽  
Dye Sensitized Solar Cell ◽  
Effect Of Temperature ◽  
Dye Sensitized ◽  
Power Application

Dye sensitized solar cell (DSSC) is a well-known photovoltaic device that is used for low power application. One of the main components for DSSC is semiconductor material photoanode which will provide the pathway for electron transportation and thus determine the energy conversion efficiency of the DSSC. The most commonly used material for the semiconductor photoanode is titanium dioxide (TiO2).TiO2is a semiconductor material with wide bandgap material that is existed in three crystalline phase; rutile, anatase and brookite. This paper emphasizes the best annealing temperature for commercialized TiO2, 98% anatase powder where the temperature varies from 300 oC – 600 oC. Through this research, the best annealing temperature for anatase TiO2photoanode is at 420 °C (0.094%) with the crystallite size of 18.76 nm and particle size of 19 nm that is favorable for the dye attached and thus enhances the energy conversion efficiency of the DSSC.

Highly efficient functional GexPb1−xTe based thermoelectric alloys

2014 ◽  
Vol 16 (37) ◽  
pp. 20120-20126 ◽  
Author(s):  
Yaniv Gelbstein ◽  
Joseph Davidow
Keyword(s):  
Energy Conversion ◽  
Fuel Consumption ◽  
Conversion Efficiency ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
Electrical Power ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Efficient Implementation ◽  
Thermoelectric Devices

Methods for enhancement of the direct thermal to electrical energy conversion efficiency, upon development of advanced thermoelectric materials, are constantly investigated mainly for an efficient implementation of thermoelectric devices in automotive vehicles, for utilizing the waste heat generated in such engines into useful electrical power and thereby reduction of the fuel consumption and CO2 emission levels.

scholarly journals Fabrication of Norbixin-Sensitized Solar Cell and The Effect of Light Intensity on Its Performance and Reusability

2021 ◽  
Vol 926 (1) ◽  
pp. 012091
Author(s):  
W Rahmalia ◽  
E Crespo ◽  
T Usman
Keyword(s):  
Solar Cell ◽  
Light Intensity ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Performance Test ◽  
Energy Conversion Efficiency ◽  
Ester Group ◽  
Maximum Energy ◽  
Dye Sensitized ◽  
Uv Visible

Abstract Dye-sensitized solar cell (DSSC) is a third-generation solar cell that has been developed as one of the clean and renewable alternative energies. This study aims to fabricate norbixin-sensitized solar cell (NSSC). Norbixin was obtained from the saponification followed by acidification of bixin and characterized using UV-Visible and FTIR spectroscopy. The solar cell was assembled using anatase-TiO2 semiconductor, KI/I2/MPII in acetonitrile as the electrolyte, and a platinum paste-based cathode. The UV-Visible spectrophotometry analysis results showed three peaks of carotenoid characteristics at 434, 457, and 486 nm. The formation of norbixin was proved by the absence of a spectral peak for the C-O-C ester group of bixin at 1254 dan 1159 cm-1” The cells performance test showed that the maximum energy conversion efficiency of NSSC increased with increasing light intensity up to 0.08 W/cm2. Exposure to the light above this intensity causes a decrease in the maximum energy conversion efficiency due to the temperature factor. The data also showed that the cell assembled was reusable. It still showed relatively good performance until the third day of analysis.

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