[EN] QUANTITATIVE INTRAMOLECULAR FISSION IN OLIGOACENES, MATERIALS, AND METHODS OF USE THEREOF<br/>[FR] FRAGMENTATION INTRAMOLÉCULAIRE QUANTITATIVE DANS DES OLIGOACÈNES, MATÉRIAUX, ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV COLUMBIA
公开号:WO2016100754A1
公开(公告)日:2016-06-23
The present invention provides soluble, stable singlet fission (SF) compounds, compositions, materials, methods of their use, and methods for their preparation that provide efficient intramolecular singlet fission (iSF) and multiple excitons. The SF compound may be a dimer, an oligomer, or a polymer of polyoligoacenes, where for example, the compound achieves a triplet yield reaching about 200% per absorbed photon. In this system, SF does not depend on intermolecular inter-actions. Instead, SF is an intrinsic property of the molecule and therefore occurs independent of intermolecular interactions. Singlet fission has the potential to significantly improve the photocurrent in single junction solar cells and thus raise the Shockley-Queisser power conversion efficiency limit from about 33% to about 46% or greater. Quantitative SF yield at room temperature has only been observed in crystalline solids or aggregates of higher acenes.
本发明提供可溶性、稳定的单重子裂变(SF)化合物、组合物、材料、其使用方法以及制备方法,其提供高效的分子内单重子裂变(iSF)和多重激子。SF化合物可以是多聚体、寡聚体或聚合物的聚合物,例如,该化合物可实现每吸收光子的三重态产率达到约200%。在这个系统中,SF不依赖于分子间相互作用。相反,SF是分子的固有性质,因此独立于分子间相互作用而发生。单重子裂变有潜力显着提高单结太阳能电池的光电流,并将从约33%提高到约46%或更高的肖克利-克瓦塞尔功率转换效率极限。在室温下只有在晶体固体或更高的芳香烃聚集体中观察到定量的SF产率。