Modification of ZnO Electron Transport Layers with Benzoic Acid Derivatives in Non-fullerene-based Organic Solar Cells

Electron transport layers play a significant role in the device performance and stability of organic solar cells, particularly those based on state-of-the art non-fullerene acceptors. This thesis aims to shed more light on this topic by exploring the use of carboxylic acid functionalized molecules (i.e. benzoic acid derivatives) as modifiers of the commonly used ZnO electron transport layer in polymer/non-fullerene acceptor organic solar cells. The results presented in this thesis establishes the effectiveness of this modification approach, and assesses the potential for further developments aimed at optimising similar organic solar cell configurations.