| 초록 |
Perovskites, such as CH3NH3PbI3-xClx show excellent optoelectronic properties. As a result, these are promising materials for a high photovoltaic performance. Spiro-MeOTAD is generally used as a hole transport material, but it needs high production costs due to complicated synthetic route. Therefore, it is important to develop new polymeric HTM with low production costs and versatile wet processing procedures. A novel donor–π–acceptor conducting polymeric hole transport material (TTB–TTQ) based on thiophene and benzothiadiazole is good candidate as an alternative to spiro-MeOTAD. The resulting polymer shows good solubility in organic solvents and exhibits excellent film formability. The TTB-TTQ based perovskite solar cell exhibits the highest efficiency (14.1%), which is 22.6% greater than that of the spiro-MeOTAD based device. This new kind of polymer can provide a novel approach for an alternative to spiro-MeOTAD. |
