https://scholars.lib.ntu.edu.tw/handle/123456789/625161
標題: | Fast Photoresponsive Phototransistor Memory Using Star-Shaped Conjugated Rod-Coil Molecules as a Floating Gate | 作者: | Ho, C.-H. Lin, Y.-C. Yang, W.-C. Ercan, E. Chiang, Y.-C. Lin, B.-H. Kuo, C.-C. WEN-CHANG CHEN |
關鍵字: | field-effect transistor; nonvolatile memory; panchromatic photoresponses; perylenediimide; solanesol | 公開日期: | 2022 | 卷: | 14 | 期: | 13 | 起(迄)頁: | 15468-15477 | 來源出版物: | ACS Applied Materials and Interfaces | 摘要: | With the explosive growth in data generation, photomemory capable of multibit data storage is highly desired to enhance the capacity of storage media. To improve the performance of phototransistor memory, an organic-molecule-based electret with an elaborate nanostructure is of great importance because it can enable multibit data storage in a memory device with high stability. In this study, a series of star-shaped rod-coil molecules consisting of perylenediimide (PDI) and biobased solanesol were synthesized in two-armed (PDI-Sol2), four-armed (PDI-Sol4), and six-armed (PDI-Sol6) architectures. Their molecular architecture-morphology relationships were investigated, and phototransistor memory was fabricated and characterized to evaluate the structure-performance relationship of these rod-coil molecules. Accordingly, the memory devices were enabled by photowriting with panchromatic light (405-650 nm) and electrical erasing using a gate bias. The PDI-Sol4-based memory device showed high memory ratios of 10 000 over 10 000 s and a rapid multilevel photoresponse of 50 ms. This achievement is related to the favorable energy-level alignment, isolated nanostructure, and face-on orientation of PDI-Sol4, which eliminated the charge tunneling barrier. The results of this study provide a new strategy for tailoring nanostructures in organic-molecule-based electrets by using a star-shaped rod-coil architecture for high-performance phototransistor memory. © 2022 American Chemical Society. All rights reserved. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127536835&doi=10.1021%2facsami.2c00622&partnerID=40&md5=5d788b12311c57d07d84830b22a08cbc https://scholars.lib.ntu.edu.tw/handle/123456789/625161 |
ISSN: | 19448244 | DOI: | 10.1021/acsami.2c00622 | SDG/關鍵字: | Memory architecture; Molecules; Nanostructures; Stars; Synthesis (chemical); Field-effect transistor; Multi-bits; Non-volatile memory; Nonvolatile memory; Panchromatic photoresponsis; Perylenediimides; Photoresponses; Rod-coil; Solanesol; Star-shaped; Field effect transistors |
顯示於: | 化學工程學系 |
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