Nano-composite Structures for OPV Devices

Richter, Henning

关键词: solar cells;    organic photovoltaics;    fullerenes;   

DOI  :  10.2172/993096
RP-ID  :  DOE/SC0003294-1
PID  :  OSTI ID: 993096

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

Improved material for use in organic photovoltaics (OPV) devices, also called polymer-solar cells (PSC), has been developed. Increased ordering of the active layer of bulk heterojunction (BHJ) cells has been achieved by the use of inert silica spheres in conjunction with suitable fullerene derivatives. Silica spheres with average diameters between 10 and 15 nm, consistent with the exciton diffusion length in the active layer, have been added. The potential for significantly improved device performance due to a higher degree of photon absorption, enabled by increased light scattering, and a maximized interface between electron donor and acceptor, ensuring efficient exciton dissociation, has been demonstrated. A method allowing for the covalent attachment of fullerene derivatives to the silica sphere surface has been developed.