作者
Jie Xu,Sihong Wang,Ging Ji Nathan Wang,Chong Zhu,Siwei Luo,Lihua Jin,Xiaodan Gu,Shu‐Cheng Chen,Vivian R. Feig,John W. F. To,Simon Rondeau‐Gagné,Joonsuk Park,Bob C. Schroeder,Chih-Wei Lu,Jin Young Oh,Yanming Wang,Yun‐Hi Kim,He Yan,Robert Sinclair,Dongshan Zhou,Gi Xue,Boris Murmann,Christian Linder,Wei Cai,Jeffrey B.‐H. Tok,Jong‐Won Chung,Zhenan Bao
摘要
Soft and conformable wearable electronics require stretchable semiconductors, but existing ones typically sacrifice charge transport mobility to achieve stretchability. We explore a concept based on the nanoconfinement of polymers to substantially improve the stretchability of polymer semiconductors, without affecting charge transport mobility. The increased polymer chain dynamics under nanoconfinement significantly reduces the modulus of the conjugated polymer and largely delays the onset of crack formation under strain. As a result, our fabricated semiconducting film can be stretched up to 100% strain without affecting mobility, retaining values comparable to that of amorphous silicon. The fully stretchable transistors exhibit high biaxial stretchability with minimal change in on current even when poked with a sharp object. We demonstrate a skinlike finger-wearable driver for a light-emitting diode.