A nanocomposite interconnecting layer for tandem small molecular organic photovoltaic cells

作者:Luo D Y; Yu L M; Man J X; Liu Z*; Lu Z H
来源:Applied Physics Letters, 2014, 104(12): 123301.
DOI:10.1063/1.4869354

摘要

A nanocomposite interconnecting layer of C60:LiF/Ag/MoOx had been applied in the tandem structure of organic photovoltaic cells to achieve high short circuit current (J(sc)) and power conversion efficiency (PCE). The J(sc) had been enhanced 40% after applying the nanocomposite interconnecting layer into a tandem structure compared to the conventional interconnecting layer of Bathocuproine (BCP)/Ag/MoOx. The improvement is due to the enhancement of the light absorption of the devices. A tandem device PCE of 3.04% was achieved by further improving the light absorption in the individual subcell units in the tandem structure by means of a bi-functional buffer layer of C60: LiF/BCP.