SEMITRANSPARENT PHOTOCONVERSION DEVICE

摘要

The main object of the present invention is to provide a semitransparent photo conversion device that enhances harvesting of visible sunlight. For this purpose, a semitransparent photovoltaic cell is provided with a multilayer structure that can be used to change the color hue appearance of the cell while guaranteeing a minimum change in the light absorption capability. The photo conversion device has a direct or inverted architecture that comprises a first light transmissive electrical contact overlaying a transparent substrate, a charge blocking layer overlying the first light transmissive electrical contact and underlying the active organic photosensitive material, a second charge blocking layer overlying the active organic photosensitive material, a second light transmissive electrical contact overlying the second charge blocking layer, and a multilayer structure overlying the second light transmissive electrical contact. The multilayer structure is composed of two or more layers of light non-absorbing dielectric materials and two adjacent layers in the multilayer structure always have different refractive indexes.

主权项

1. A photoconversion device comprising:
a transparent substrate and a first light transmissive electrical contact overlaying the transparent substrate, a first charge blocking layer, an absorption layer comprising and active organic photosensitive material, a second charge blocking layer overlying the active organic photosensitive material, a second light transmissive electrical contact and a multilayer structure in this order, wherein the multilayer structure comprises at least two layers of different dielectric materials with different index of refraction and wherein the thickness of each layer is between 5 and 500 nm and two adjacent layers in have different refractive indexes.