Flexible electronics (FEs) with excellent flexibility or foldability may find widespread applications in the wearable devices, artificial intelligence (AI), Internet of Things (IoT), and other areas. However, the widely utilization may also bring the concerning for the fast accumulation of electronic waste. Green FEs with good degradability might supply a way to overcome this problem. Starch, as one of the most abundant natural polymers, has been exhibiting great potentials in the development of environmental-friendly FEs due to its inexpensiveness, good processability, and biodegradability. Lots of remarks were made this field but no summary was found. In this review, we discussed the preparation and applications of starch-based FEs, highlighting the role played by the starch in such FEs and the impacts on the properties. Finally, the challenge was discussed and the outlook for the further development was also presented.
Left, device on starch films: Starch film (a). Reproduced with permission86. Copyright 2019, Springer. Starch film (b). Reproduced with permission37. Copyright 2019, American Chemical Society. c Conductive film. Reproduced with permission38. Copyright 2018, American Chemical Society. d Pressure sensor. Reproduced with permission37. Copyright 2019, American Chemical Society. e Organic field-effect transistor. Reproduced with permission33. Copyright 2017, Wiley. f Gas sensor. Reproduced with permission98. Copyright 2020, American Chemical Society. g Resistive switching memory. Reproduced with permission35. Copyright 2016, American Chemical Society. Right, device on starch gels: Starch gel (h). Reproduced with permission39. Copyright 2018, American Chemical Society. Starch gel (i). reproduced with permission147. Copyright 2019, Elsevier. j Conductive hydrogel. Reproduced with permission45. Copyright 2019, American Chemical Society. k Strain sensor. Reproduced with permission151. Copyright 2019, Elsevier. l Motion sensor. Reproduced with permission40. Copyright 2019, American Chemical Society. m Supercapacitor. Reproduced with permission158. Copyright 2019, American Chemical Society. n Triboelectric nanogenerator. Reproduced with permission39. Copyright 2018, American Chemical Society.
