Lu Zecheng, Chen Long, Zhou Jianxian, He Bing, Liu Ruijian, Zhu Chengjun, Xue Pan, Sun Yan, Li Chunsheng, Wei Lei, Li Qingwen, Zhang Qichong
Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China.
Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China.
ACS Nano. 2023 Oct 24;17(20):20087-20097. doi: 10.1021/acsnano.3c05710. Epub 2023 Oct 3.
Fiber-shaped photodetectors (FPDs) have attracted special attention to wearable health monitoring due to their 3D absorption capabilities. However, the practical application of traditional FPDs is severely limited by the irreversible degradation of performance caused by vulnerable interface compatibility on complex deformation and a single function. Here, an integrated photoelectrochemical FPD/battery device (FPDB) is designed, consisting of a common electrode, photoanode, anode, and sol-gel electrolyte as an isolation layer, which not only effectively avoids the short circuit problem of FPD but also endows high-efficiency energy storage capacity. As expected, the resulting all-in-one triple-twisted fiber-shaped FPDB simultaneously achieves high responsiveness of 151.45 mA W and excellent volume capacity of 18.75 mAh cm. Such a stable architectural design and multifunctional integration of functional fibers accelerate the development of next-generation wearable fabrics.
