Volatile surface coordination prevents high-performance tin-based perovskite transistors from degrading/ oxidizing from air/ heat

https://www.eurekalert.org/news-releases/1135033

" organic semiconductors... Volatile Surface Reconstruction: potassium acetate treated scalable non-toxic cesium-tin-iodide semiconductor selectively target s/ converts defect-inducing surface tin ions into volatile tin acetate vaporizing upon mild heating... vacancies left behind filled by dense potassium iodide bilayer establishing self-passivating/ resilient shield... >50 cm2/V·s hole mobility, >10⁸ on/ off current ratio... allows normally volatile tin-based devices  >4 hours stability for over month under 100 °C  stress"