材料科学
离子
电化学
二次离子质谱法
质谱法
再分配(选举)
表征(材料科学)
分析化学(期刊)
兴奋剂
光电子学
电场
电极
纳米技术
化学
色谱法
物理化学
物理
有机化学
量子力学
政治
政治学
法学
作者
Samuel B. Toshner,Zihua Zhu,Ilya V. Kosilkin,Janelle Leger
摘要
Ion profiles in polymer light-emitting electrochemical cells are known to significantly affect performance and stability, but are not easily measured. Here, secondary ion mass spectrometry is used to investigate ion profiles in both dynamic and chemically fixed junction devices. Results indicate lower reversibility of dynamic junctions and a more significant time delay for ion redistribution than previously expected, but confirm the complete immobilization of ions in chemically fixed junction devices. When compared with prior studies analyzing the electric field profiles in similar devices, these results help to elucidate the roles of ion distribution and electrochemical doping in LECs.
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