Abstract

This article describes the photoconductive properties of a multilayer uniform ultrathin film comprising alternating polyaniline (PANi) and reduced graphene oxide (RGO) layers, fabricated on a poly(ethylene terephthalate) (PET) sheet. The fabrication of the two electron-rich layers on the PET substrate is successfully completed using a layer-by-layer (LBL) deposition technique under mild conditions and HI/H₂O vapor treatment at 100°C. The photocurrent under illumination of >300 nm light exhibits 80 µA compared with that of obtained in the dark. However, it decreases to 75 µA under >460 nm light illumination and further increases to 80 µA under >600 nm light illumination (0.64 mW) at an applied voltage of 1.0 V. The PET sheets coated with (PANi/RGO)₂₀ films (d = 46.3 nm) exhibits a photoresponsivity of 125 mA/W at an illunination intensity of 0.64 mW using red light (> 600 nm). The extraordinary optoelectronic characteristics of the (PANi/RGO) films are ascribed to the charge transfer complex formation of the two PANi and RGO layer components and also to the structural uniformity of the LBL-assembled optoelectronic thin films, which tended to favor the rapid interfacial charge transfer to the electrodes.

中文翻译：

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使用NIR的柔性光电应用塑料基板上的聚苯胺和氧化石墨烯薄膜的多层工程

摘要

本文介绍了在聚对苯二甲酸乙二醇酯（PET）片材上制成的多层均匀超薄膜的光电导性能，该薄膜包括交替的聚苯胺（PANi）和还原的氧化石墨烯（RGO）层。使用逐层（LBL）沉积技术在温和条件下并在100°C下进行HI / H ₂ O气相处理，成功完成了PET衬底上两个富电子层的制造。与在黑暗中获得的光电流相比，在> 300 nm光照下的光电流呈现80 µA。但是，在> 460 nm的光照下，它会降低到75 µA，在> 600 nm的光照下（0.64 mW）下，在1.0 V的施加电压下会进一步增加到80 µA。涂有（PANi / RGO）₂₀膜的PET片材（d≥46.3 nm）在使用红光（> 600 nm）时在0.64 mW的照度下表现出125 mA / W的光响应性。（PANi / RGO）薄膜的非凡光电特性归因于两个PANi和RGO层组分的电荷转移复合物形成，也归因于LBL组装的光电薄膜的结构均匀性，这往往有利于快速界面电荷转移到电极。