The Experts below are selected from a list of 214632 Experts worldwide ranked by ideXlab platform

Kazuo Takimiya - One of the best experts on this subject based on the ideXlab platform.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7–1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage. Maximising short-circuit current density and open circuit voltage in polymer-fullerene solar cells is a critical issue. Here, the authors use an aphthobisoxadiazole-based polymer and observe a low Photon Energy loss of 0.5 eV, with an open-circuit voltage of 1 V and power conversion efficiency of 9%.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7-1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage.

Kazuaki Kawashima - One of the best experts on this subject based on the ideXlab platform.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7–1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage. Maximising short-circuit current density and open circuit voltage in polymer-fullerene solar cells is a critical issue. Here, the authors use an aphthobisoxadiazole-based polymer and observe a low Photon Energy loss of 0.5 eV, with an open-circuit voltage of 1 V and power conversion efficiency of 9%.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7-1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage.

Hideo Ohkita - One of the best experts on this subject based on the ideXlab platform.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7–1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage. Maximising short-circuit current density and open circuit voltage in polymer-fullerene solar cells is a critical issue. Here, the authors use an aphthobisoxadiazole-based polymer and observe a low Photon Energy loss of 0.5 eV, with an open-circuit voltage of 1 V and power conversion efficiency of 9%.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7-1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage.

Itaru Osaka - One of the best experts on this subject based on the ideXlab platform.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7–1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage. Maximising short-circuit current density and open circuit voltage in polymer-fullerene solar cells is a critical issue. Here, the authors use an aphthobisoxadiazole-based polymer and observe a low Photon Energy loss of 0.5 eV, with an open-circuit voltage of 1 V and power conversion efficiency of 9%.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7-1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage.

Yasunari Tamai - One of the best experts on this subject based on the ideXlab platform.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7–1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage. Maximising short-circuit current density and open circuit voltage in polymer-fullerene solar cells is a critical issue. Here, the authors use an aphthobisoxadiazole-based polymer and observe a low Photon Energy loss of 0.5 eV, with an open-circuit voltage of 1 V and power conversion efficiency of 9%.

  • high efficiency polymer solar cells with small Photon Energy loss
    Nature Communications, 2015
    Co-Authors: Kazuaki Kawashima, Yasunari Tamai, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
    Abstract:

    A crucial issue facing polymer-based solar cells is how to manage the energetics of the polymer/fullerene blends to maximize short-circuit current density and open-circuit voltage at the same time and thus the power conversion efficiency. Here we demonstrate that the use of a naphthobisoxadiazole-based polymer with a narrow bandgap of 1.52 eV leads to high open-circuit voltages of approximately 1 V and high-power conversion efficiencies of ∼9% in solar cells, resulting in Photon Energy loss as small as ∼0.5 eV, which is much smaller than that of typical polymer systems (0.7-1.0 eV). This is ascribed to the high external quantum efficiency for the systems with a very small Energy offset for charge separation. These unconventional features of the present polymer system will inspire the field of polymer-based solar cells towards further improvement of power conversion efficiencies with both high short-circuit current density and open-circuit voltage.