Publication

Semiconductor Materials and Devices Lab

Paper

  • 2023
  • Neuromorphic computing based on halide perovskites
    • Nature Electronics, 6, 949–962 (2023)
  • Maria Vasilopoulou*, Abd Rashid bin Mohd Yusoff*, Yang Chai, Michael-Alexandros Kourtis, Toshinori Matsushima, Nicola Gasparini, Rose Du, Feng Gao, Mohammad Khaja Nazeeruddin, Thomas D Anthopoulos*, Yong-Young Noh*
High performance and stable naphthalene diimide based n-channel organic field-effect transistors by polyethylenimine doping
저자
Dang Xuan Long, Eun-Young Choi*, Yong-Young Noh*
저널명
Dyes and Pigments, 142, 323-329 (2017)
년도
2017

[Abstract]

In this paper, we study the effect of the structure and molecular weight of polyethylenimine (PEI) on doping efficiency of n-type organic semiconductors based on poly[[N, N 9-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,59-(2,29-bithiophene)] (P(NDI2OD-T2)). Linear and branched PEI with low (Mw = 2 and 3 kDa) and high molecular weights (Mw = 25 kDa) are used. It is found that the low molecular weight PEI shows higher doping efficiency than high molecular weight PEI due to better mix-ability between the dopant and the host. Doped P(NDI2OD-T2) OFETs show highly improved mobility up to 0.85 cm2/V·s (linear) at 0.1 wt% doping concentration from 0.21 cm2/V·s for pristine devices with enhanced air and operational stability.