| 초록 |
Organic–inorganic hybrid perovskite has been explosively developed due to its outstanding properties. In perovskite solar cells (PSCs), perovskite is located between a working electrode (fluorine-doped tin oxide) and a counter electrode (gold, Au). Charge transport layers are located between perovskite and the electrodes to transport charges as well as block opposite charges effectively. In particular, a hole transport layer is important in terms of air prevention. Therefore, it is necessary to investigate dopant-free and hydrophobic polymeric hole transport materials (HTMs). In this study, an unique polymeric HTM is synthesized by adjusting the solubility using tetraethylene glycol group. The planar-PSC accepting PTEG shows an efficiency of 19.8% without any dopants, which corresponds to the highest value reported until now. This study suggests a fundamental strategy for designing and synthesizing various polymeric HTMs. |
