제목: Study on Redox Properteis of Conjugated Materials for Optoelectronic Applications

내용: 
Organic conductors have recently drawn significant attention due to their potential applications in optoelectronic devices. The use of molecular doping to achieve an electrical conductivity of >100 S·cm−1 through efficient charge carrier generation has been restricted to conjugated polymers (CPs) composed only of thiophene or its derivatives. In this presentation, novel conjugated CPs, containing both electron donating isoindoloindole (IDID) and thiophene moieties, was designed for molecular doping platforms and characterized primitive doping characteristics through molecular sequential doping. To maximize doping efficiency, new doping approaches, such as sequential cascade doping and hybrid doping, were devised, and both provided outstanding electrical conductivity, over 600 S·cm−1. The properties of doped CP films, such as carrier densities, mobility, and conductivity, were directly quantified using AC Hall effect device. Then, it was confirmed that the doped CPs can improve the device performance when adopted as a charge collection layer for perovskite solar cells and as conduction medias for organic thermoelectric devices. Finally, by examining the electrical redox behavior, it was concluded that CPs with excellent molecular (chemical) doping capabilities are also advantageous for electrochromic device applications.

ZOOM 진행 링크: https://zoom.us/j/8583348353?pwd=bHNNNjJPTDBpK2RMOFhZcVlzQysvZz09