申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0000829A1
公开(公告)日:1979-02-21
Photovoltaic elements having improved conversion efficiencies comprise a photovoltaic element which comprises
(1) a first layer comprising an organic electron donor compound, in contact with
(2) a second layer comprising an organic electron acceptor compound, said layersforming a rectifying junction between them and at least one of said layers being capable of absorbing radiation at wavelengths between 350 and 1000 nm, and
(3) an electrode in operative ohmic contact with each of said layers, at least one of said electrodes being transparent to electromagnetic radiation to which the photo-voltaic element is sensitive,
wherein the organic compound of each of layers (1) and (2) has a molecule having a planar polycyclic nucleus and wherein the combined thickness of the electron donor compound layer or layers and the electron acceptor compound layer or layers is no greater than 0.5 micron.
具有更高转换效率的光伏元件包括一个光伏元件,该光伏元件包括(1)由有机电子供体化合物组成的第一层,与(2)由有机电子受体化合物组成的第二层接触,所述各层之间形成一个整流结,且所述各层中至少有一层能够吸收波长在 350 纳米到 1000 纳米之间的辐射,以及(3)与所述各层进行有效欧姆接触的电极,所述电极中至少有一层对光伏元件敏感的电磁辐射是透明的,其中(1)和(2)各层的有机化合物具有一个具有平面多环核的分子,且电子供体化合物层和电子受体化合物层的总厚度不大于 0.5 微米。