DEVICE FOR THE OPTIMAL COUPLING OF LIGHT TO AN INTERMEDIATE BAND SOLAR CELL MADE FROM QUANTUM DOTS

摘要

The invention relates to a device for coupling light to an intermediate band solar cell (8) made from quantum dots, which also concentrates the light. The energy of the light emitting the luminescent material (2) is selected such as to produce transitions between the valence band and the conduction band of the cell. The pigments of the luminescent material (6) are selected such that the emitted photons produce transitions from the valence band to the intermediate band and from the intermediate band to the conduction band. Photonic crystals 1 and 3 prevent the light emitted by the layer (2) from escaping, while photonic crystals 4 and 5 prevent the light emitted by the material (6) from escaping. The device also includes a reflector (7) and a supporting element (9).