Recently, significant progress has been made in the development of new techniques for the fabrication of mechanically durable, bright, and deformable electroluminescent devices, leading to the emergence of various technologies, such as soft robots, actuators, flexible/stretchable/wearable electronics, and self-healable devices. However, these devices mostly possess coplanar structures, wherein the internally generated light must be transmitted through at least one of the electrodes, and require a thin emissive layer (EML), causing low brightness and less applicability in soft devices. This is particularly challenging in the case of stretchable electroluminescent devices, which require electrodes exhibiting both high transmittance and low resistance even in the stretchable state because thin EMLs have low tolerance to external mechanical deformations. Herein, we report in-plane electric-field-driven, stretchable alternating-current electroluminescent devices with high brightness by utilizing a thick EML comprising multiple parallelly patterned silver nanowires embedded in a zinc-sulfide-embedded polydimethylsiloxane layer. Since the device is driven by an internal in-plane electric field, it can utilize a thick EML without using planar electrodes. At an electric field of 8 V/ μm, the device showed 3.8 times higher electroluminescence luminance than a thin coplanar-structured device and achieved a maximum brightness of 1324 cd/m2 (at 9.12 V/ μm), suggesting that the electric field expands throughout the thick EML. Furthermore, the device exhibited strong mechanoluminescence and good durability of dual-channel luminescence under simultaneous electromechanical stimulation. We believe that our results represent a breakthrough in electroluminescence and mechanoluminescence research and provide important insights into the development of sustainable and stretchable devices with high brightness.

中文翻译：

---

可拉伸双通道能量转换系统发出明亮均匀的光：同时利用电气和机械激发

最近，在制造机械耐用、明亮和可变形的电致发光器件的新技术开发方面取得了重大进展，导致出现了各种技术，例如软机器人、执行器、柔性/可拉伸/可穿戴电子设备，以及自修复设备。然而，这些器件大多具有共面结构，其中内部产生的光必须通过至少一个电极传输，并且需要薄的发射层（EML），导致亮度低，在软器件中的适用性较低。这在可拉伸电致发光器件的情况下尤其具有挑战性，这需要电极即使在可拉伸状态下也具有高透光率和低电阻，因为薄 EML 对外部机械变形的容忍度低。在此，我们通过使用厚 EML 报告了具有高亮度的面内电场驱动、可拉伸交流电致发光器件，该器件包含嵌入硫化锌嵌入的聚二甲基硅氧烷层中的多个平行图案化的银纳米线。由于该器件由内部面内电场驱动，因此可以使用厚 EML 而无需使用平面电极。在 8 V/μm 的电场下，该器件的电致发光亮度是薄型共面结构器件的 3.8 倍，最大亮度达到 1324 cd/m 具有高亮度的可拉伸交流电致发光器件，通过使用厚 EML，该 EML 包含嵌入硫化锌嵌入的聚二甲基硅氧烷层中的多个平行图案化的银纳米线。由于该器件由内部面内电场驱动，因此它可以利用厚 EML 而无需使用平面电极。在 8 V/μm 的电场下，该器件的电致发光亮度是薄型共面结构器件的 3.8 倍，最大亮度达到 1324 cd/m 具有高亮度的可拉伸交流电致发光器件，通过使用厚 EML，该 EML 包含嵌入硫化锌嵌入的聚二甲基硅氧烷层中的多个平行图案化的银纳米线。由于该器件由内部面内电场驱动，因此它可以利用厚 EML 而无需使用平面电极。在 8 V/μm 的电场下，该器件的电致发光亮度是薄型共面结构器件的 3.8 倍，最大亮度达到 1324 cd/m2个（在 9.12 V/μm），表明电场在整个厚 EML 中扩展。此外，该器件在同步机电刺激下表现出很强的机械发光和双通道发光的良好耐久性。我们相信，我们的结果代表了电致发光和机械发光研究的突破，并为开发可持续和可拉伸的高亮度设备提供了重要见解。