Tuning Interfacial properties with the dipole moment of conjugated polyelectrolytes
발표자
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초록
내용
Polyfluorene (PF) and its derivatives have been improved not only in organic light-emitting diodes (OLEDs) but also in organic solar cells (OSCs). Polyfluorene also applied as a buffer layer of OSCs for enhancing the electron mobility, charge collection, charge separation. Among these properties, we focused on electron mobility, which can be changed with various methods. In this study, The devices were fabricated by using the polyfluorene derivatives has different backbone structure which named as PFB-Br, PFT-Br, and PF2T-Br. Through investigating the devices, the electron mobility of polyelectrolytes induced from the conformation and dipole moment of polyelectrolytes was enhanced compared with the ZnO monolayer, which using as a reference of the device. As a result, the power conversion efficiency(PCE) was increased through the improvement of short-circuit current(Jsc) and fill factor derived from the developed properties of polyelectrolytes.