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Showing 1 to 13 of 13 for “"quantum dot solar cells"”.
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Nanostructured architectures for colloidal quantum dot solar cells
… bulk heterojunction architecture for colloidal quantum dot (QD) solar cells. Quantum dots are solution-processed nanocrystals whose tunable bandgap energies make them a promising active-layer candidate for next-generation optoelectronic devices, including solar cells and light-emitting diodes. …
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The Stability of PbS Quantum Dot Solar Cells
Solution-based lead sulfide (PbS) quantum dots (QDs) may enable lightweight solar cells that facilitate high-throughput module manufacturing, simplify module installation, and bring light-harvesting functionality to unconventional or weight-restricted surfaces. Proven long-term stability is …
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Energy level engineering in colloidal quantum dot solar cells
Lead sulfide colloidal quantum dots (PbS QDs) possess a uniquely tunable set of electronic properties that has generated considerable interest in their use as active materials in lightweight, flexible, solution-processed photovoltaics. The bandgap of PbS QDs can be tuned across the entire range …
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Toward efficient and stable quantum dot solar cells : design and characterization
… and electronic properties of lead sulfide (PbS) quantum dots (QDs) for the development of QD solar cells. Near-infrared active PbS QDs composed of earth-abundant elements have emerged as promising candidates for photovoltaic applications because of the solution-processability and a tunable energy …
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Engineering scalable device architectures for lead sulfide quantum dot solar cells
In recent years flexible and lightweight solar cell technologies have emerged as complements to silicon solar panels in the rapidly growing clean energy industry. As one of these new technologies, quantum dot solar cells have shown remarkable shelf life stability with increasingly competitive power …
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Development of indium arsenide quantum dot solar cells for high conversion efficiency
… square meter, which reaches the earth everyday. Solar cells are devices that can be used to collect such abundant form of energy and convert it into electrical energy for daily consumption. Therefore, it is important to research this subject in order to obtain high efficiency solar cells. In this …
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Energy Level Alignment in Hybrid Bulk Heterojunctions and New Redox Mediators for Quantum Dot Solar Cells
The advancement of quantum dot sensitized solar cell (QDSSC) technology depends on optimizing directional charge transfer between light absorbing quantum dots, TiO2, and a redox mediator. Kinetically, reduction of oxidized quantum dots by the redox mediator should be rapid and faster than the back …
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Computational Studies of PbS Quantum Dots
A third-generation photovoltaic technology, PbS quantum dot solar cells boast tunable, infrared-compatible bandgaps, air stability and scalable production. Their unfortunately limited photovoltaic efficiency, a result of low carrier lifetime, has been tentatively ascribed to polydispersity, fusing, …
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Architecting the Optics, Energetics and Geometry of Colloidal Quantum Dot Photovoltaics
Solution processed solar cells offer the promise of a low cost solution to global energy concerns. Colloidal quantum dots are one material that can be easily synthesized in and deposited from solution. These nanoparticles also offer the unique ability to select the desired optical and electrical …
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Development of First-Year Engineering Teams' Mathematical Models through Linked Modeling and Simulation Projects
… context of a nanotechnology topic, specifically quantum dot solar cells. The teams’ mathematical models submitted at the end of the MEA and the simulation project were analyzed using two frameworks to assess the quality of the mathematical models and the level of simulation completeness. Three …
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The Role of Quantum Dot Size on the Performance of Intermediate Band Solar Cells
… decrease of the open circuit voltage and solar cell efficiency in quantum dot (QD) intermediate band solar cells (IBSCs). More specifically, the effect of indium arsenide (InAs) QD height on the open circuit voltage and solar cell efficiency was studied in a systematic way. To explore this …
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Investigation on nanostructured solar cells
In this study, materials for the nanostructured solar cells were synthesized and their effects were investigated. TiO2 nanoparticles, which are commonly used in the nanostructured solar cells, were synthesized by a newly developed technique, combining the advantages of flame aerosol synthesis and …
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Materials, photophysics and device designs for high efficiency photovoltaics
… recent past, the cost of power generated using solar photovoltaics (PVs) has dropped below that of power generated by oil and gas, making them an attractive candidate in the renewable energy market. The Shockley-Queisser limit (S-Q limit), also known as the detailed balance limit, refers to the …