Evidence for long drift carrier lifetimes in [Fe(Htrz)2(trz)](BF4) plus polyaniline composites
Evidence for long drift carrier lifetimes in [Fe(Htrz)2(trz)](BF4) plus polyaniline composites
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DOI：
10.1016/j.orgel.2022.106516
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发表时间：
2022-04
影响因子：
3.2
通讯作者：
Esha Mishra;T. K. Ekanayaka;K. McElveen;R. Lai;P. Dowben
中科院分区：
文献类型：
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作者：
Esha Mishra;T. K. Ekanayaka;K. McElveen;R. Lai;P. Dowben
研究了自旋交叉分子[Fe（Htrz）2（trz）]（BF_4）（其中Htrz = 1H-1，2，4-三唑）与聚苯胺复合物中的多数载流子寿命和漂移载流子寿命。研究了[Fe（Htrz）2（trz）]（BF 4）与聚苯胺复合物在T = 320 K的低自旋态和T = 380 K的高自旋态下的电流-电压和电容-电压特性。在这些复合材料中，漂移载流子寿命超过微秒，并且有迹象表明大多数载流子是空穴。虽然当[Fe（Htrz）2（trz）]（BF 4）加聚苯胺复合物处于低自旋状态时漂移载流子寿命低得多，但有迹象表明，对于至少一种聚苯胺复合物，载流子迁移率在低自旋状态下高得多，使得迁移率与低自旋状态的较高电导率一致。
An effort has been made to determine the majority carrier and drift carrier lifetimes in the promising spin crossover molecule [Fe(Htrz)2(trz)](BF4) (where Htrz = 1H-1,2,4-triazole) plus polyaniline composite. The current voltage and capacitance voltage characteristics of the [Fe(Htrz)2(trz)](BF4) plus polyaniline composite were studied at both the low spin state at T = 320 K and the high spin state at T = 380 K. In these composites, the drift carrier lifetimes are in excess of microseconds, and there are indications that the majority carriers are holes. While the drift carrier lifetime is much lower when the [Fe(Htrz)2(trz)](BF4) plus polyaniline composite is in the low spin state, there are indications that for at least one polyaniline composite, the carrier mobility is much higher in the low spin state so that the mobility is consistent with the higher conductivity of the low spin state.