Abstract
AbstractInsulator materials can trap charges, referring to electrets, which are attractive for transistors and memories. However, insulators intrinsically exhibit high electrical resistance, thus the charge injection and release inside insulators typically need high voltage or long bias time, limiting the applications that require high writing/erasing speed. In this work, insulator polymer polystyrene (PS) film is treated by a soft plasma, which selectively induces a high density of charge traps at the top surface, without changing the electronic properties of the underneath materials. The thus‐prepared surface is easily occupied by external neat charges to form a meso‐stable electret. Subsequently, the electret is used as an ultra‐thin charge trapping layer to build transistors for some applications. Consequently, in transistor architecture, the charge injection and release at soft plasma treated PS surface can be more easily achieved in a short stimulus as compared with pristine PS counterpart, and the density of captured holes under gate bias reaches 2.9 × 1012 cm−2 in 1 ms. Under UV irradiation, charge transfer occurs from the photo‐excited semiconductor to the electret, contributing to the rapid release of the stored holes. This soft plasma‐generated electret is then utilized for flash‐type memories, photodetectors, and artificial synapses.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.