Generally, the ultraviolet photodetector devices based on ZnO/PEDOT composites were fabricated by spin coating of PEDOT solutions on ZnO nanorods array, which needs the polymer disperesed in solvent. In this paper, an electrochemical deposition method was proposed for the prepparation of ZnO/PEDOT-type conducting polymers composites for ultraviolet photodetector. The poly(3,4-proplene-dioxythiophene) (PProDOT) and poly(3,4-ethylenedioxy-thiophene)(PEDOT) were selected as PEDOT-type conducting polymers. The structure of composite materials was characterized by UV-vis, XRD, Raman, SEM,EDS and XPS analysis. The effects of different polymers on the UV sensing ability of ZnO nanorods were studied. The structural results showed that the composites were successfully prepared by electrochemical deposition method indicating that the electrochecmial method was an effective way to prepraration of this type composites.The photoelectric performance test showed that the structure of the polymer chain affected the responsiveness of the materials, and the response time of ZnO/PProDOT was 14 s shorter than that of ZnO/PEDOT, and it displayed an excellent long-term stability. After deposition of PProDOT, the UV responsivity of ZnO nanorods was increased from 2.5 A W⁻¹ to 27.5 A W⁻¹, and the external quantum efficiency and detectivity were significantly improved, implying that the PProDOT can be ideal candidate material for ultraviolet photodetector.

中文翻译：

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紫外光电探测器用ZnO/PEDOT型导电聚合物复合材料的电化学制备

通常，基于 ZnO/PEDOT 复合材料的紫外光电探测器器件是通过在 ZnO 纳米棒阵列上旋涂 PEDOT 溶液来制造的，这需要将聚合物分散在溶剂中。在本文中，提出了一种电化学沉积方法来制备用于紫外光电探测器的 ZnO/PEDOT 型导电聚合物复合材料。聚（3,4-丙烯-二氧噻吩）（PProDOT）和聚（3,4-亚乙基二氧-噻吩）（PEDOT）被选为PEDOT型导电聚合物。通过UV-vis、XRD、Raman、SEM、EDS和XPS分析对复合材料的结构进行表征。研究了不同聚合物对ZnO纳米棒紫外传感能力的影响。结构结果表明，采用电化学沉积法成功制备了复合材料，表明电化学法是制备此类复合材料的有效途径。光电性能测试表明，聚合物链的结构影响材料的响应性， ZnO/PProDOT 的响应时间比 ZnO/PEDOT 的响应时间短 14 s，并且表现出优异的长期稳定性。沉积 PProDOT 后，ZnO 纳米棒的紫外响应从 2.5 A W 增加 并显示出优异的长期稳定性。沉积 PProDOT 后，ZnO 纳米棒的紫外响应从 2.5 A W 增加 并显示出优异的长期稳定性。沉积 PProDOT 后，ZnO 纳米棒的紫外响应从 2.5 A W 增加^-1至 27.5 A W ^-1，外量子效率和探测率显着提高，表明 PProDOT 可以成为紫外光电探测器的理想候选材料。