Journal
IEEE ELECTRON DEVICE LETTERS
Volume 30, Issue 9, Pages 931-933Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2009.2025893
Keywords
Organic memory; oxotitanium phthalocyanine (TiOPc); resistive switching; space-charge-limited conduction (SCLC); thermal robustness
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Funding
- National Natural Science Foundation of China [60625403]
- Special Funds for Major State Basic Research (973) Projects of China [2006CB302701]
- NCET
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This letter reports a novel single-component organic-memory cell based on oxotitanium phthalocyanine (TiOPc) material. The device can achieve good resistive-switching performance such as a high on/off current ratio of about 10(4), large read signal window (4 V), and good retention (4 h at 1-V read voltage). The organic-memory cell exhibits excellent thermal stability above 525 K due to the thermal robustness of TiOPc, which indicates its potential for hybrid integration with CMOS technology at the back-end process and flexible electronics system. The current-voltage characteristics are comprehensively investigated, and a possible mechanism is proposed and well fitted with the experimental data. The results show that the trap-filling space-charge-limited conduction with TiOPc charge confinement and the electrochemical reaction at the Avriopc interface can elucidate the switching behavior of the memory cell.
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