Improving the efficiency of ternary organic solar cells by reducing energy loss

Abstract

Effectively reducing the voltage loss in organic solar cells (OSCs) is critical to improving the power conversion efficiency (PCE) of organic solar cells. In this study, highly efficient ternary OSCs...

Over 19.2% efficiency of layer-by-layer organic photovoltaics enabled by a highly crystalline material as an energy donor and nucleating agent

“…39,40 The Δ E 1 is defined as the difference between E g and V SQ oc , which is calculated to be 0.268 eV for the typical binary and ternary LbL OPVs. V rad oc is the voltage of radiative limit, 41 which can be obtained according to the equation in the ESI †. The highly sensitive external quantum efficiency (EQE PV ) and electroluminescence (EL) measurements were performed to determine V rad oc , as shown in Fig.…”

Quinoxaline-based Y-type acceptors for organic solar cells

“…Encouraged by the PM6:Qx2 system with low energy loss, Wei and co-workers further constructed efficient TOSCs based on PM6: m -BTP-PhC6:Qx2 with simultaneously increased V OC , J SC , and FF. 69 The third component Qx2 promotes the miscibility between the donor and the acceptor composite in the resulting ternary blend, leading to ideal film morphology and thus decreased energetic disorder, improved charge extraction, and reduced E loss ( Fig. 7b and c ) in the optimum TOSCs.…”