Solid additive for organic polymer solar cell

• Main Authors: BO ZHISHAN, XU XINJUN, GUO QINGXIN, LIU YAHUI
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention relates to a solid additive for an organic polymer solar cell, which is characterized in that the solid additive is an aromatic substance containing a carbonyl, a carboxyl, an aldehyde group or an ester group, and the molecular weight of the solid additive is 100-500g/mol. The invention further relates to an organic polymer solar cell device. The organic polymer solar cell device ischaracterized by sequentially comprising a transparent electrode, an electron transport/hole barrier layer, an active layer, an electron barrier/hole transport layer and a metal electrode, wherein theactive layer comprises a wide band gap conjugated polymer electron donor, a non-fullerene small molecule electron acceptor and the solid additive. The solid additive disclosed by the invention can prolong the service life of receptor excitons, so that the excitons can be effectively migrated to an electron donor-receptor interface, the exciton separation efficiency is improved, and the short-circuit current density, the f