Interconnectors in Tandem Organic Light Emitting Diodes and Their Influence on Device Performance

In this paper, we present a comprehensive review on recent progress of interconnectors in tandem organic light emitting diodes, from structure design to performance and their working principles. We will introduce the most commonly used interconnectors, discuss in detail the main features of them, as well as the advantages and disadvantages of each type. Especially, organic heterojunction type interconnectors are highlighted.