scholarly journals Upconverting nanocomposites dispersed in urea-containing acrylics

2015 ◽  
Vol 3 (21) ◽  
pp. 5556-5565 ◽  
Author(s):  
D. L. Inglefield ◽  
T. R. Merritt ◽  
B. A. Magill ◽  
T. E. Long ◽  
G. A. Khodaparast
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
High Energy ◽  
Low Energy

Lanthanide-doped upconverting nanoparticles (UCNPs) have the ability to convert low energy photons into high energy photons, making this material appealing for a variety of scientific pursuits, from solar energy conversion to bioimaging.

scholarly journals A high energy density solar rechargeable redox battery

2016 ◽  
Vol 4 (9) ◽  
pp. 3446-3452 ◽  
Author(s):  
Mohammad Ali Mahmoudzadeh ◽  
Ashwin R. Usgaocar ◽  
Joseph Giorgio ◽  
David L. Officer ◽  
Gordon G. Wallace ◽  
...  
Keyword(s):  
Energy Density ◽  
Solar Energy ◽  
Energy Conversion ◽  
Storage System ◽  
Solar Energy Conversion ◽  
High Energy ◽  
High Energy Density ◽  
Dye Sensitized ◽  
Energy Conversion And Storage ◽  
And Storage

An integrated solar energy conversion and storage system is presented using a dye sensitized electrode in a redox battery structure.

scholarly journals Multi-bandgap Solar Energy Conversion via Combination of Microalgal Photosynthesis and Spectrally Selective Photovoltaic Cell

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Changsoon Cho ◽  
Kibok Nam ◽  
Ga-Yeong Kim ◽  
Yeong Hwan Seo ◽  
Tae Gyu Hwang ◽  
...  
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
High Efficiency ◽  
Solar Energy Conversion ◽  
High Energy ◽  
Dual Energy ◽  
Design Rule ◽  
High Concentration ◽  
Microalgal Cultivation ◽  
Spectrally Selective

AbstractMicroalgal photosynthesis is a promising solar energy conversion process to produce high concentration biomass, which can be utilized in the various fields including bioenergy, food resources, and medicine. In this research, we study the optical design rule for microalgal cultivation systems, to efficiently utilize the solar energy and improve the photosynthesis efficiency. First, an organic luminescent dye of 3,6-Bis(4′-(diphenylamino)-1,1′-biphenyl-4-yl)-2,5-dihexyl-2,5-dihydropyrrolo3,4-c pyrrole -1,4-dione (D1) was coated on a photobioreactor (PBR) for microalgal cultivation. Unlike previous reports, there was no enhancement in the biomass productivities under artificial solar illuminations of 0.2 and 0.6 sun. We analyze the limitations and future design principles of the PBRs using photoluminescence under strong illumination. Second, as a multiple-bandgaps-scheme to maximize the conversion efficiency of solar energy, we propose a dual-energy generator that combines microalgal cultivation with spectrally selective photovoltaic cells (PVs). In the proposed system, the blue and green photons, of which high energy is not efficiently utilized in photosynthesis, are absorbed by a large-bandgap PV, generating electricity with a high open-circuit voltage (Voc) in reward for narrowing the absorption spectrum. Then, the unabsorbed red photons are guided into PBR and utilized for photosynthesis with high efficiency. Under an illumination of 7.2 kWh m−2 d−1, we experimentally verified that our dual-energy generator with C60-based PV can simultaneously produce 20.3 g m−2 d−1 of biomass and 220 Wh m−2 d−1 of electricity by utilizing multiple bandgaps in a single system.

Design of nitride semiconductors for solar energy conversion

2016 ◽  
Vol 4 (18) ◽  
pp. 6742-6754 ◽  
Author(s):  
Andriy Zakutayev
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
High Energy ◽  
Nitride Semiconductors

Nitride semiconductors have properties suitable for solar energy conversion and can be synthesized using high-energy precursors.

scholarly journals Oxygenic photosynthesis: translation to solar fuel technologies

2014 ◽  
Vol 83 (4) ◽  
pp. 423-440 ◽  
Author(s):  
Julian David Janna Olmos ◽  
Joanna Kargul
Keyword(s):  
Climate Change ◽  
Renewable Energy ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
High Energy ◽  
Solar Fuels ◽  
High Energy Density ◽  
Energy Crisis ◽  
Oxygenic Photosynthesis

Mitigation of man-made climate change, rapid depletion of readily available fossil fuel reserves and facing the growing energy demand that faces mankind in the near future drive the rapid development of economically viable, renewable energy production technologies. It is very likely that greenhouse gas emissions will lead to the significant climate change over the next fifty years. World energy consumption has doubled over the last twenty-five years, and is expected to double again in the next quarter of the 21st century. Our biosphere is at the verge of a severe energy crisis that can no longer be overlooked. Solar radiation represents the most abundant source of clean, renewable energy that is readily available for conversion to solar fuels. Developing clean technologies that utilize practically inexhaustible solar energy that reaches our planet and convert it into the high energy density solar fuels provides an attractive solution to resolving the global energy crisis that mankind faces in the not too distant future. Nature’s oxygenic photosynthesis is the most fundamental process that has sustained life on Earth for more than 3.5 billion years through conversion of solar energy into energy of chemical bonds captured in biomass, food and fossil fuels. It is this process that has led to evolution of various forms of life as we know them today. Recent advances in imitating the natural process of photosynthesis by developing biohybrid and synthetic “artificial leaves” capable of solar energy conversion into clean fuels and other high value products, as well as advances in the mechanistic and structural aspects of the natural solar energy converters, photosystem I and photosystem II, allow to address the main challenges: how to maximize solar-to-fuel conversion efficiency, and most importantly: how to store the energy efficiently and use it without significant losses. Last but not least, the question of how to make the process of solar energy conversion into fuel not only efficient but also cost effective, therefore attractive to the consumer, should be properly addressed.

Sign in / Sign up

Export Citation Format

Share Document