| 초록 |
Holetransportmaterials(HTM) for perovskite solarcells have many advantages for their low cost, proccessibility, accessibility and large choice. The requirements of HTMs are high holemobility, dopability, tunable energy of the highest occupied molecular orbital(HOMO), which need match well with the valence band (VB) of perovskite toenable hole extraction and electron blocking, as well as high processability and stability. The pyridal[2,1,3]thiadiazole(PyT) as electron acceptor unit has been extensively used in copolymers for polymer solar cells, which has the more electron affinity character than 2,1,3-benzothiadiazloe for red shifting the absorption spectra. In order to control the energy level of polymeric HTM with extended absorption region, we designed and synthesized the pyridal[2,1,3]thiadiazolebased donor-acceptor (D-A)copolymers for polymeric HTM. In this presentation, synthesis and characterization of PyT based D-A copolymers as HTM for perovskite solar cells will be presented. |
