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High‐performance Flexible Complementary Electrochromic Device Based on Plasma Modified WO3 Nano Hybrids and V2O5 Nanofilm with Low Operation Voltages
Electroanalysis ( IF 2.7 ) Pub Date : 2018-06-07 , DOI: 10.1002/elan.201800276
Esin Eren 1, 2 , Ceyda Alver 1 , Gozde Yurdabak Karaca 1 , Emre Uygun 3, 4 , Lutfi Oksuz 4, 5 , Aysegul Uygun Oksuz 1
Affiliation  

Tungsten trioxide‐poly(3,4‐ethylenedioxythiophene) (WO3‐PEDOT) and tungsten trioxide‐polyfuran (WO3‐PFu) were prepared by rf rotating plasma polymerization. Electrochromic hybrid thin films were fabricated onto flexible polyethylene terephthalate (PET)/ indium tin oxide (ITO) film using electron beam evaporation method. In order to deeply characterize all films, scanning electron microscopy‐energy dispersive X‐ray spectroscopy (SEM‐EDS) and electrochemical impedance spectroscopy (EIS) techniques were used. The counter electrode effect on plasma modified WO3 nano hybrids‐based electrochromic devices (ECDs) was evaluated. By incorporating flexible vanadium pentoxide (V2O5) film as counter electrode, complementary ECDs were constructed through combining the hybrid flexible films (WO3‐PEDOT, WO3‐PFu) as working electrodes, which exhibit highly efficient electrochromic performance with low voltage operation. Especially, WO3‐PEDOT/V2O5‐based ECD owns a high optical modulation of 61.5 % at 750 nm driven by −1.0 V (coloration) and +1 V (bleaching) with fast response times (coloration time: 13.58 s, bleaching time: 8.07 s) and a high coloration efficiency of 527 cm2 C−1. This study can supply useful and efficient avenue for designing flexible complementary electrochromic device for energy‐saving flexible electronics.

中文翻译:

基于等离子改性WO3纳米杂化物和低工作电压的V2O5纳米膜的高性能柔性互补电致变色器件

三氧化钨-聚(3,4-亚乙基二氧噻吩)(WO 3 -PEDOT)和三氧化钨-聚呋喃(WO 3 -PFu)是通过射频旋转等离子体聚合制备的。使用电子束蒸发法将电致变色杂化薄膜制备到柔性聚对苯二甲酸乙二酯(PET)/铟锡氧化物(ITO)薄膜上。为了深入表征所有薄膜,使用了扫描电子显微镜-能量色散X射线光谱法(SEM-EDS)和电化学阻抗光谱法(EIS)技术。评估了对电极对基于等离子体改性的WO 3纳米杂化材料的电致变色器件(ECD)的影响。通过掺入柔性五氧化二钒(V 2 O 5)膜作为对电极,通过将混合柔性膜(WO 3 -PEDOT,WO 3 -PFu)组合为工作电极来构造互补的ECD,这些膜在低压操作下表现出高效的电致变色性能。尤其是,基于WO 3 ‐PEDOT / V 2 O 5的ECD在−1.0 V(着色)和+1 V(漂白)的驱动下,具有750.6 %的高光学调制度,在750 nm处具有快速响应时间(着色时间:13.58 s) ,漂白时间:8.07s)和527cm 2  C -1的高着色效率。该研究可以为设计用于柔性电子设备的柔性互补电致变色器件提供有用而有效的途径。
更新日期:2018-06-07
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