材料科学
制作
光电子学
电极
钙钛矿(结构)
可伸缩电子设备
复合数
二极管
纳米技术
复合材料
化学工程
电气工程
物理化学
病理
数码产品
工程类
化学
替代医学
医学
作者
Dai-Hua Jiang,Yi‐Chun Liao,Chia‐Jung Cho,Loganathan Veeramuthu,Fang‐Cheng Liang,Ting-Chieh Wang,Chu‐Chen Chueh,Toshifumi Satoh,Shih‐Huang Tung,Chi‐Ching Kuo
标识
DOI:10.1021/acsami.9b23291
摘要
Perovskite light-emitting diode (PeLED) has been vigorously developed in recent years. As it has demonstrated good performance on the rigid substrates, the next important direction of PeLED is its integration with stretchable components to realize stretchable, responsive device. Here, we describe a facile fabrication of stretchable perovskite light-emissive touch-responsive devices (PeLETDs) by utilizing highly transparent and conductive polyurethane/silver nanowires (PU/AgNWs) as the electrode. Meanwhile, a stretchable tricomposite perovskite emissive layer was developed by blending a small amount of poly(ethylene oxide) (PEO) and poly(vinylpyrrolidone) (PVP) with CsPbBr3. Additionally, a thin PVP layer was introduced at the bottom of the emissive layer. On one hand, it can further improve the morphology of the emissive layer; on the other hand, it can serve as an electron-injection barrier to reduce the high nonradiative recombination at the corresponding interface. Further, to fulfill the responsive function of the fabricated PeLEDs, a poly(ethylene terephthalate) (PET) spacer with a 100 μm thickness was inserted between the top electrode and the emissive layer. A stretchable PeLETD is finally demonstrated to possess a low turn-on voltage of 2 V with a brightness of 380.5 cd m–2 at 7.5 V and can sustain 30% uniaxial strain with a small luminance variation of 24%. More interestingly, our stretchable PeLETD exhibited high stability, which could be well touch responsivity, where the luminance is on/off switched for 300 cycles by repeatedly applying pressure.
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