Recent Advancements in Stretchable Polymer Optoelectronics
Stretchable polymer optoelectronic devices,as a unique class of devices based on conjugated polymers,are capable of maintaining their optoelectronic performance under mechanical deformations.Such unique feature gives them significant potential in applications such as wearable electronics,stretchable displays,biomedical sensing and beyond.In recent years,extensive research both domestically and internationally in device and material design has laid the groundwork for enhancing the performance and expanding the applications of these devices.Currently,stretchable optoelectronic devices are primarily constructed by two approaches:external elasticity and intrinsic elasticity.Devices using external elasticity achieve stretchability through specific device forms,such as wrinkle structures,"island-bridge"structures,fiber structures,and kirigami structures.In contrast,devices based on intrinsic elasticity achieve stretchability in each functional layer through thin film modifications,such as molecular design,blending with elastomers,and adding plasticizers.This review delves into these two construction methods,examining strategies for device design,chemical modification,and thin-film composition optimization.It reviews significant research achievements in organic field-effect transistors(OFETs),organic light-emitting diodes(OLEDs),organic photovoltaic cells(OPVs),and organic photodetectors(OPDs).Finally,the paper points out key research directions,highlighting challenges and opportunities in material and film modification,device engineering,and studies on structure-performance relationship.It envisions that the ongoing development of stretchable polymer optoelectronic devices will bring new vitality and breakthroughs to the field of organic electronics.