Self-powered skin-conformal ultra-flexible electronics via nano-grating-patterned organic photovoltaics
발표자
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초록
내용
Conformal photovoltaics play important role in the development of compact, portable, and sustainable power source for on-skin electronics. Their direct integration with functional electronics opens unprecedented possibilities for microelectronics to be operated without demand of external bulky and rigid power supplies. Here, we report double-grating-patterned high performance organic photovoltaics for self-powered conformal cardiograph. Cumulative solar gains by multiple nano-grating patterns in the photoactive and charge transporting layers facilitate ultra-thin (3-m-thick) photovoltaic with exceptional high-power conversion efficiency exceeding 10.5 % at free-standing condition and excellent PCE stability of 7.3 % after over 900 repetitive bending cycles at 67 % compression. Finally, we demonstrate self-powered conformal cardiograph, enabling reliable electrocardiogram signal detection through conformal adherence to the flexuous skin and tissue surface.