The Photovoltaic Performance of Conjugated Polyelectrolytes as Cathode Interlayer Material by Modifying Side Chain Functionalities
발표자
()
초록
내용
In a polymer solar cell, the cathode interlayer material (CIM) is a quaternized conjugated polymer based on poly[(9,9-bis(3’-(N,Ndimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dihexylfluorene)] (PFN) were examined. Dihexyl fluorene and dimethyl aminopropyl fluorene backbone alternately used in interlayer.by adding quaternized compounds, such as bromoethane or bromoethanol, as side chains to the PFN precursor polymer, the corresponding quaternized conjugated polyelectrolytes, known as PFN salt and PFN-OH salt, were created. ZnO/interlayer/PTB7-Th:PC71BM/MoO3/Ag were made to evaluate the inverted polymer solar cells (iPSCs). By using a PFN, PFN salt, and PFN-OH salt as the CIM, the efficiency of the iPSCs was improved. The results are superior when using bromoethanol as an interlayer to modify side-chain functionality rather than those with bromoethane.