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Thermoluminescent Charge Recombination in Saturated Hydorcarbons

机译:饱和烃中的热致发光电荷复合

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摘要

Thermoluminescence from the recombination of N,N,N',N'-tetramethylparaphenylenediamine (TMPD) cations with trapped electrons in squalane and cis-decalin glasses and in microcrystalline methylcylcohexane is reported.The glasses exhibit distributions of activation energies maximal at 0.20 eV.Microcrystalline methylcyclohexane exhibits a single activation energy at 0.30 eV.These activation energies for thermal electron release are much smaller than photoionization threshold energies determined optically in similar glasses,suggesting that the mechanism of electron release is trap destruction,not electron excitation within a stable trap.The similarit between these activation energies and those determined for quenching of the TMPD phosphorescence also supports this interpretation.
机译:据报道,N,N,N',N'-四甲基对苯二胺(TMPD)阳离子与电子在角鲨烷和顺式十氢化萘玻璃中以及在微晶甲基环己烷中的俘获电子复合而产生的热致发光。该玻璃在0.20 eV处具有最大的活化能分布。甲基环己烷在0.30 eV处显示单个活化能。这些热电子释放的活化能比类似玻璃中光学测定的光电离阈值能量小得多,这表明电子释放的机理是陷阱破坏,而不是稳定陷阱中的电子激发。这些活化能与为TMPD磷光猝灭而确定的活化能之间的相似性也支持这种解释。

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