Better Organic Ternary Memory Performance through Self‐Assembled Alkyltrichlorosilane Monolayers on Indium Tin Oxide (ITO) Surfaces. Issue 64 (24th October 2017)

• Record Type: Journal Article
• Authors: Hou, Xiang; Cheng, Xue‐Feng; Zhou, Jin; He, Jing‐Hui; Xu, Qing‐Feng; Li, Hua; Li, Na‐Jun; Chen, Dong‐Yun; Lu, Jian‐Mei
• Is Part Of: Chemistry. Volume 23:Issue 64(2017)
• Page Start: 16393
• Page End: 16400
• Publication Date: 2017-10-24
• Subjects: alkyltrichlorosilanes -- ITO surfaces -- memory devices -- surface chemistry; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201704059
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Recently, surface engineering of the indium tin oxide (ITO) electrode of sandwich‐like organic electric memory devices was found to effectively improve their memory performances. However, there are few methods to modify the ITO substrates. In this paper, we have successfully prepared alkyltrichlorosilane self‐assembled monolayers (SAMs) on ITO substrates, and resistive random access memory devices are fabricated on these surfaces. Compared to the unmodified ITO substrates, organic molecules (i.e., 2‐((4‐butylphenyl)amino)‐4‐((4‐butylphenyl)iminio)‐3‐oxocyclobut‐1‐en‐1‐olate, SA‐Bu) grown on these SAM‐modified ITO substrates have rougher surface morphologies but a smaller mosaicity. The organic layer on the SAM‐modified ITO further aged to eliminate the crystalline phase diversity. In consequence, the ternary memory yields are effectively improved to approximately 40–47 %. Our results suggest that the insertion of alkyltrichlorosilane self‐assembled monolayers could be an efficient method to improve the performance of organic memory devices. Abstract : Keep in mind : Memory devices with organic molecules on alkyltrichlorosilane‐modified indium tin oxide (ITO) surfaces were fabricated. After modification with alkyltrichlorosilanes, the intermolecular stacking interactions as well as the mosaicity of the crystallites were greatly improved, the mobility of the carrier and the ternary device yield were enhanced.