期刊
IEEE TRANSACTIONS ON NANOTECHNOLOGY
卷 10, 期 3, 页码 594-599出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNANO.2010.2056381
关键词
Flash memory; molecules; nonvolatile; organic
类别
资金
- FCRP
In this paper, nanosegmented floating-gate memories consisting of a uniform set of identical organic dye molecules were fabricated and evaluated for potential use as programmable charge storage and charge retention elements in a future flash-memory technology. Viability of molecular thin films to serve as an energetically uniform set of similar to 1 nm in size charge-retaining sites is tested on a series of molecular materials, the best performing of which are thermally evaporated thin films of 3,4,9,10-perylenetetracarboxylic bis-benzimidazole. The initial results show device durability over 10(5) program/erase cycles, with hysteresis window of up to 3.3 V, corresponding to charge-storage density as high as 5 x 10(12) cm(-2). Data shows that charge retention is improved for molecular films with lower carrier mobility, which for the first time experimentally confirms in a coherent material set that inhibiting charge transport by nanosegmented floating-gate structures benefits the memory retention.
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