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首页> 外文会议>Organic Optoelectronics and Photonics II >THE EFFECT OF INTERMEDIATE LAYERS ON THE INTERNAL ELECTRIC FIELD IN ORGANIC SEMICONDUCTOR DEVICES
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THE EFFECT OF INTERMEDIATE LAYERS ON THE INTERNAL ELECTRIC FIELD IN ORGANIC SEMICONDUCTOR DEVICES

机译：中间层对有机半导体器件内部电场的影响

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In this work we study the internal electric field (V_(int)) present in devices based on an intrinsically semiconducting polymer. Intermediate layers between the indium-tin-oxide and Al electrodes and the photoactive layer are able to influence and alter this electric field. The two commonly used intermediate layers, namely poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate) (PEDOT:PSS) and LiF, are subject of this study. Their influence is studied with Electroabsorption (EA) spectroscopy as well as transient photocurrent measurements under applied bias. While PEDOT:PSS has no significant influence on V_(int), introducing LiF increases V_(int) close to the bandgap of the studied semiconducting polymer. However, using PEDOT:PSS directly influences the spectral EA response. The interface between PEDOT:PSS and the conjugated polymer is studied by impedance spectroscopy. We interpret the results in terms of the presence of charges at the interface.
机译：在这项工作中，我们研究了基于本征半导体聚合物的器件中存在的内部电场（V_（int））。铟锡氧化物和Al电极之间的中间层以及光敏层能够影响和改变该电场。本研究的对象是两个常用的中间层，即掺杂有聚（苯乙烯磺酸盐）（PEDOT：PSS）和LiF的聚（3,4-乙撑二氧噻吩）。通过电吸收（EA）光谱以及施加偏压下的瞬态光电流测量研究了它们的影响。虽然PEDOT：PSS对V_（int）没有显着影响，但引入LiF会使V_（int）接近所研究的半导体聚合物的带隙。但是，使用PEDOT：PSS直接影响光谱EA响应。通过阻抗谱研究了PEDOT：PSS与共轭聚合物之间的界面。我们根据界面上是否存在收费来解释结果。

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