Open-circuit-voltage shift of over 0.5 V in organic photovoltaic cells induced by a minor structural difference in alkyl substituents.

ABSTRACT: The recent surge in the efficiency of organic photovoltaic devices (OPVs) largely hinges on the reduction of energy loss (E _loss) that leads to improvements in open-circuit voltage (V _OC). However, there are still many unclarified factors regarding the relationship between the molecular structure and V _OC, hampering the establishment of widely applicable, effective principles for the design of active-layer materials. In this contribution, we examine the origin of the large V _OC shifts induced by minor structural differences in end-alkyl substituents on a series of anthracene-based p-type compounds. The examined p-type compounds are all highly crystalline, thereby enabling detailed investigation of the molecular packing

SUBMITTER: Suzuki M 

PROVIDER: S-EPMC8148340 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature