当前位置: Xing Group >> 科学研究 >> 论文成果

Interfacial engineering boosting charge extraction for efficient photocatalytic hydrogen evolution

发布时间:2023-10-19点击次数:

  • 关键字:PEDOT-PSS; EFFICIENCY; ENHANCEMENT; FILM
  • 摘要:Due to its high transparency, low refractive index, tunable conductivity, and thermal stability, poly(3,4-ethylene dioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) is commonly used as a hole transport layer (HTL) material of perovskite light-emitting diodes (PeLEDs). However, PEDOT:PSS is highly acidic and sensitive to humidity, which would corrode the perovskite layer and result in poor operational stability of PeLEDs. Here, we modified the PEDOT:PSS by doping a series of n- alkylamines with different chain lengths. Alkylamines neutralize the acidity of PEDOT:PSS and form a hydrophobic layer, which blocks the ion migration between HTL and the emitting layer and promotes the device operational stability. Overall, the PeLEDs exhibit alkylamine chain length-related efficiency and luminance. The operational half-lifetime of the PeLEDs almost increases as the chain length of the alkylamine increases. We obtained a high-stability PeLED based on a modified HTL with a lifetime of 36.4 h, which is a seven times improvement compared to the pristine device. Our findings offer a method to enhance the operational stability of PeLEDs and provide insights into the interaction between the HTL and perovskite layer.
  • 卷号:4
  • 期号:6
  • 是否译文:否
+
论文成果

个人信息

  • 职称:教授
  • 学历:博士研究生
  • 学位:工学博士
  • 所在单位:化学与分子工程学院
  • 学科: 物理化学

学术荣誉:

  • 2019  当选: 省高端人才