The Experts below are selected from a list of 264 Experts worldwide ranked by ideXlab platform

Yujie Xiong - One of the best experts on this subject based on the ideXlab platform.

  • Plasmonic nanostructures in Solar Energy Conversion
    Journal of Materials Chemistry C, 2017
    Co-Authors: Ran Long, Hao Huang, Yujie Xiong
    Abstract:

    Photocatalysis and photovoltaics are two major approaches sharing similar processes (including light absorption, and charge generation and separation) for Solar Energy Conversion with semiconductors. Various strategies have been proposed to improve the efficiency of Solar Energy Conversion due to limited light absorption and rapid charge recombination in semiconductors. Integrating semiconductors with plasmonic nanostructures has been proven as an effective way to greatly enhance the performance in photocatalysis and photovoltaic devices. This review outlines the fundamental mechanisms, including hot electron injection, local electromagnetic field enhancement and resonant Energy transfer, which are responsible for both plasmonics-enhanced photocatalysis and photovoltaics. Furthermore, we review some recent progress in practical applications such as photocatalytic water splitting, artificial photosynthesis, photodegradation of organic pollutants and Solar cells integrated with plasmonic nanostructures. In specific cases, the possible working mechanisms for the enhancement of photocatalytic or photovoltaic performance by plasmonics are clarified together with materials design. Finally, the existing challenges and future prospects for the utilization of plasmonics in Solar Energy Conversion are discussed.

  • Plasmonic nanostructures in Solar Energy Conversion
    Journal of Materials Chemistry C, 2017
    Co-Authors: Ran Long, Hao Huang, Yujie Xiong
    Abstract:

    This review outlines the recent progress on the integration of plasmonic nanostructures with photocatalysis and photovoltaics toward Solar Energy Conversion.

Nathan S. Lewis - One of the best experts on this subject based on the ideXlab platform.

  • Introduction: Solar Energy Conversion.
    Chemical reviews, 2015
    Co-Authors: Nathan S. Lewis
    Abstract:

    This thematic issue contains reviews of various aspects of Solar Energy Conversion. The sun provides the largest Energy source known to man, with more Energy from sunlight striking the earth in 1 h than all of the Energy consumed on the planet in an entire year. Solar panels provide a known, scalable technology to capture and convert sunlight into electricity. Moreover, the costs of Si-based photovoltaic panels have declined continuously in the past decade, to the point where Solar electricity is now cost-competitive in certain regions and niche markets. Nevertheless, Solar Energy Conversion continues to attract fervent efforts devoted to the discovery and development of new materials, concepts, devices, and systems that can provide new and/or dramatically improved functionality and scalability.

  • Solar Energy Conversion via hot electron internal photoemission in metallic nanostructures: Efficiency estimates
    Journal of Applied Physics, 2014
    Co-Authors: Andrew Jay Leenheer, Nathan S. Lewis, Prineha Narang, Harry A. Atwater
    Abstract:

    Collection of hot electrons generated by the efficient absorption of light in metallic nanostructures, in contact with semiconductor substrates can provide a basis for the construction of Solar Energy-Conversion devices. Herein, we evaluate theoretically the Energy-Conversion efficiency of systems that rely on internal photoemission processes at metal-semiconductor Schottky-barrier diodes. In this theory, the current-voltage characteristics are given by the internal photoemission yield as well as by the thermionic dark current over a varied-Energy barrier height. The Fowler model, in all cases, predicts Solar Energy-Conversion efficiencies of

  • Solar Energy Conversion via hot electron internal photoemission in metallic nanostructures efficiency estimates
    Journal of Applied Physics, 2014
    Co-Authors: Andrew Jay Leenheer, Nathan S. Lewis, Prineha Narang, Harry A. Atwater
    Abstract:

    Collection of hot electrons generated by the efficient absorption of light in metallic nanostructures, in contact with semiconductor substrates can provide a basis for the construction of Solar Energy-Conversion devices. Herein, we evaluate theoretically the Energy-Conversion efficiency of systems that rely on internal photoemission processes at metal-semiconductor Schottky-barrier diodes. In this theory, the current-voltage characteristics are given by the internal photoemission yield as well as by the thermionic dark current over a varied-Energy barrier height. The Fowler model, in all cases, predicts Solar Energy-Conversion efficiencies of <1% for such systems. However, relaxation of the assumptions regarding constraints on the escape cone and momentum conservation at the interface yields Solar Energy-Conversion efficiencies as high as 1%–10%, under some assumed (albeit optimistic) operating conditions. Under these conditions, the Energy-Conversion efficiency is mainly limited by the thermionic dark current, the distribution of hot electron energies, and hot-electron momentum considerations.

  • Silicon Microwire Arrays for Solar Energy-Conversion Applications
    The Journal of Physical Chemistry C, 2013
    Co-Authors: Emily L. Warren, Harry A. Atwater, Nathan S. Lewis
    Abstract:

    Highly structured silicon microwire (Si MW) arrays have been synthesized and characterized as absorbers for Solar Energy-Conversion systems. These materials are of great interest for applications in Solar Energy Conversion, including Solar electricity and Solar fuels production, due to their unique materials properties, form factors, ease of fabrication, and device-processing attributes. The Si MW array geometry allows for efficient collection of photogenerated carriers from impure materials that have short minority-carrier diffusion lengths while simultaneously allowing for high optical absorption and high external quantum yields for charge-carrier collection. In addition, Si MW arrays exhibit unique mesoscale optical behavior and can be removed from the growth substrate to provide flexible, processable arrays of Si microwires ordered in a variety of organic polymers and ionomers. The unique photon-management properties of Si MW arrays, combined with their high internal surface area and controlled morpho...

Ran Long - One of the best experts on this subject based on the ideXlab platform.

  • Plasmonic nanostructures in Solar Energy Conversion
    Journal of Materials Chemistry C, 2017
    Co-Authors: Ran Long, Hao Huang, Yujie Xiong
    Abstract:

    Photocatalysis and photovoltaics are two major approaches sharing similar processes (including light absorption, and charge generation and separation) for Solar Energy Conversion with semiconductors. Various strategies have been proposed to improve the efficiency of Solar Energy Conversion due to limited light absorption and rapid charge recombination in semiconductors. Integrating semiconductors with plasmonic nanostructures has been proven as an effective way to greatly enhance the performance in photocatalysis and photovoltaic devices. This review outlines the fundamental mechanisms, including hot electron injection, local electromagnetic field enhancement and resonant Energy transfer, which are responsible for both plasmonics-enhanced photocatalysis and photovoltaics. Furthermore, we review some recent progress in practical applications such as photocatalytic water splitting, artificial photosynthesis, photodegradation of organic pollutants and Solar cells integrated with plasmonic nanostructures. In specific cases, the possible working mechanisms for the enhancement of photocatalytic or photovoltaic performance by plasmonics are clarified together with materials design. Finally, the existing challenges and future prospects for the utilization of plasmonics in Solar Energy Conversion are discussed.

  • Plasmonic nanostructures in Solar Energy Conversion
    Journal of Materials Chemistry C, 2017
    Co-Authors: Ran Long, Hao Huang, Yujie Xiong
    Abstract:

    This review outlines the recent progress on the integration of plasmonic nanostructures with photocatalysis and photovoltaics toward Solar Energy Conversion.

Harry A. Atwater - One of the best experts on this subject based on the ideXlab platform.

  • Solar Energy Conversion via hot electron internal photoemission in metallic nanostructures: Efficiency estimates
    Journal of Applied Physics, 2014
    Co-Authors: Andrew Jay Leenheer, Nathan S. Lewis, Prineha Narang, Harry A. Atwater
    Abstract:

    Collection of hot electrons generated by the efficient absorption of light in metallic nanostructures, in contact with semiconductor substrates can provide a basis for the construction of Solar Energy-Conversion devices. Herein, we evaluate theoretically the Energy-Conversion efficiency of systems that rely on internal photoemission processes at metal-semiconductor Schottky-barrier diodes. In this theory, the current-voltage characteristics are given by the internal photoemission yield as well as by the thermionic dark current over a varied-Energy barrier height. The Fowler model, in all cases, predicts Solar Energy-Conversion efficiencies of

  • Solar Energy Conversion via hot electron internal photoemission in metallic nanostructures efficiency estimates
    Journal of Applied Physics, 2014
    Co-Authors: Andrew Jay Leenheer, Nathan S. Lewis, Prineha Narang, Harry A. Atwater
    Abstract:

    Collection of hot electrons generated by the efficient absorption of light in metallic nanostructures, in contact with semiconductor substrates can provide a basis for the construction of Solar Energy-Conversion devices. Herein, we evaluate theoretically the Energy-Conversion efficiency of systems that rely on internal photoemission processes at metal-semiconductor Schottky-barrier diodes. In this theory, the current-voltage characteristics are given by the internal photoemission yield as well as by the thermionic dark current over a varied-Energy barrier height. The Fowler model, in all cases, predicts Solar Energy-Conversion efficiencies of <1% for such systems. However, relaxation of the assumptions regarding constraints on the escape cone and momentum conservation at the interface yields Solar Energy-Conversion efficiencies as high as 1%–10%, under some assumed (albeit optimistic) operating conditions. Under these conditions, the Energy-Conversion efficiency is mainly limited by the thermionic dark current, the distribution of hot electron energies, and hot-electron momentum considerations.

  • Silicon Microwire Arrays for Solar Energy-Conversion Applications
    The Journal of Physical Chemistry C, 2013
    Co-Authors: Emily L. Warren, Harry A. Atwater, Nathan S. Lewis
    Abstract:

    Highly structured silicon microwire (Si MW) arrays have been synthesized and characterized as absorbers for Solar Energy-Conversion systems. These materials are of great interest for applications in Solar Energy Conversion, including Solar electricity and Solar fuels production, due to their unique materials properties, form factors, ease of fabrication, and device-processing attributes. The Si MW array geometry allows for efficient collection of photogenerated carriers from impure materials that have short minority-carrier diffusion lengths while simultaneously allowing for high optical absorption and high external quantum yields for charge-carrier collection. In addition, Si MW arrays exhibit unique mesoscale optical behavior and can be removed from the growth substrate to provide flexible, processable arrays of Si microwires ordered in a variety of organic polymers and ionomers. The unique photon-management properties of Si MW arrays, combined with their high internal surface area and controlled morpho...

Hao Huang - One of the best experts on this subject based on the ideXlab platform.

  • Plasmonic nanostructures in Solar Energy Conversion
    Journal of Materials Chemistry C, 2017
    Co-Authors: Ran Long, Hao Huang, Yujie Xiong
    Abstract:

    Photocatalysis and photovoltaics are two major approaches sharing similar processes (including light absorption, and charge generation and separation) for Solar Energy Conversion with semiconductors. Various strategies have been proposed to improve the efficiency of Solar Energy Conversion due to limited light absorption and rapid charge recombination in semiconductors. Integrating semiconductors with plasmonic nanostructures has been proven as an effective way to greatly enhance the performance in photocatalysis and photovoltaic devices. This review outlines the fundamental mechanisms, including hot electron injection, local electromagnetic field enhancement and resonant Energy transfer, which are responsible for both plasmonics-enhanced photocatalysis and photovoltaics. Furthermore, we review some recent progress in practical applications such as photocatalytic water splitting, artificial photosynthesis, photodegradation of organic pollutants and Solar cells integrated with plasmonic nanostructures. In specific cases, the possible working mechanisms for the enhancement of photocatalytic or photovoltaic performance by plasmonics are clarified together with materials design. Finally, the existing challenges and future prospects for the utilization of plasmonics in Solar Energy Conversion are discussed.

  • Plasmonic nanostructures in Solar Energy Conversion
    Journal of Materials Chemistry C, 2017
    Co-Authors: Ran Long, Hao Huang, Yujie Xiong
    Abstract:

    This review outlines the recent progress on the integration of plasmonic nanostructures with photocatalysis and photovoltaics toward Solar Energy Conversion.