Photovoltaic conversion element and a dye-sensitizing photovoltaic cell
AssigneeKabushiki Kaisha Toshiba
InventorsMasatoshi Sakurai, Katsuyuki Naito, Akihiro Horiguchi, Hiroyasu Sumino, Maki Yonetsu
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Abstract
A photovoltaic conversion element comprising, a first transparent electrode, a transparent semiconductor layer disposed on the first transparent electrode, a sensitizing dye adsorption portion which is disposed on the surface of the transparent semiconductor layer, a carrier transport layer formed on the sensitizing dye adsorption portion, and a second transparent electrode disposed on the carrier transport layer, wherein the sensitizing dye adsorption portion comprises sensitizing dyes of plural kinds of color, which are adsorbed on a plurality of surface regions of the semiconductor layer.
Claims22
A photovoltaic conversion element comprising:
- a first transparent electrode;
- a transparent semiconductor layer disposed on said first transparent electrode;
- a sensitizing dye adsorption portion disposed on a surface of said transparent semiconductor layer;
- a carrier transport layer formed on said sensitizing dye adsorption portion;
- and
- a second transparent electrode disposed on said carrier transport layer,
- wherein said sensitizing dye adsorption portion comprises sensitizing dyes of plural colors with a specific color sensitizing dye adsorbed on selected sites of a plurality of surface regions of said transparent semiconductor layer.
A photovoltaic conversion element comprising:
- at least two photovoltaic cell units laminated along a light transmitting direction, wherein a photovoltaic cell of said at least two photovoltaic cell units unit comprises:
- a dye-sensitizing transparent semiconductor electrode disposed on a light incident side,
- a counter electrode formed of a transparent conductive layer and disposed away from said dye-sensitizing transparent semiconductor electrode, and
- a carrier transport layer sandwiched between said dye-sensitizing transparent semiconductor electrode and said counter electrode, and
- wherein said dye-sensitizing transparent semiconductor electrode comprises:
- a transparent electrode disposed on a transparent substrate,
- a transparent semiconductor layer formed on said transparent electrode, and
- a sensitizing dye adsorbed on said transparent semiconductor layer and in contact with said carrier transport layer;
- and
- wherein each of said photovoltaic cells includes different sensitizing dyes such that a sensitizing dye adsorbed in a dye-sensitizing transparent semiconductor electrode of one photovoltaic cell unit differs in absorption wavelength from another sensitizing dye adsorbed in a dye-sensitizing transparent semiconductor electrode of another photovoltaic cell unit.
A photovoltaic conversion element comprising:
- a transparent substrate;
- a photovoltaic conversion layer-laminated body formed on said transparent substrate;
- and
- an electrode connecting portion formed on an edge portion of said photovoltaic conversion layer-laminated body,
- wherein said photovoltaic conversion layer-laminated body comprises at least two photovoltaic conversion layers laminated with each other and a photovoltaic conversion layer of said at least two photovoltaic conversion layers comprises:
- a first transparent electrode and a second transparent electrode which are spaced away from and facing each other,
- a transparent semiconductor layer formed on said first transparent electrode,
- a solid carrier transport layer formed on said second transparent electrode, and
- a sensitizing dye adsorbed on said transparent semiconductor layer and in contact with said solid carrier transport layer, and
- wherein a roughness factor of said transparent semiconductor layer is not more than 100 and a thickness of said solid carrier transport layer is not more than 1 μm.
Dependencies are inferred from the claim text.