Recent studies are actively contributing to the implementation of the use of five human senses in electronic skins. In order to achieve this, it is critical to develop sensors with the ability to heal after being subjected to stretching or damage; this should be achieved without any significant deterioration in performance, as is possible for human skin. This study investigates the potential for producing stretchable, cuttable, and healable photodetectors. To this end, a reversibly cross‐linkable silicone polymer, polydimethylsiloxane (rcPDMS), is synthesized via a Diels–Alder reaction; subsequently, ZnS:Cu particles are dispersed therein to form a composite film. Ag nanowires (AgNWs) are formed on both the surfaces of the film to realize a three‐layer sandwich structured capacitor, namely: AgNWs/ZnS:Cu‐rcPDMS/AgNWs. Light irradiation of the film induces the photodielectric effect in ZnS:Cu particles and the dielectric response of photoinduced dipole moments composed of localized photoactive carriers results in a change in the capacitance of the film. Based on this, a photodetector is developed that is stretchable, healable, and demonstrates no reduction in the device performance even before and after cutting as well as healing.

中文翻译：

---

基于ZnS：Cu颗粒和可逆交联有机硅弹性体复合材料的可拉伸自愈电容式光电探测器

最近的研究为在电子皮肤中使用五种人类感官做出了积极贡献。为了实现这一点，开发具有拉伸或损坏后能够愈合的传感器的能力至关重要。应该做到这一点，而不会造成性能的任何显着降低，这对于人类皮肤是可能的。这项研究调查了生产可拉伸，可切割和可修复光探测器的潜力。为此，通过Diels-Alder反应合成了可逆交联的有机硅聚合物聚二甲基硅氧烷（rcPDMS）。随后，将ZnS：Cu颗粒分散在其中以形成复合膜。在薄膜的两个表面上形成银纳米线（AgNWs），以实现三层夹心结构电容器，即：AgNWs / ZnS：Cu-rcPDMS / AgNWs。薄膜的光辐照在ZnS：Cu颗粒中引起光介电效应，由局部光敏载流子组成的光诱导偶极矩的介电响应导致薄膜电容的变化。基于此，开发出了一种可伸缩，可修复的光电探测器，即使在切割和愈合之前和之后，其光电性能也不会降低。