메뉴 건너뛰기




Volumn 302, Issue 5650, 2003, Pages 1543-1545

Molecular Memories That Survive Silicon Device Processing and Real-World Operation

Author keywords

[No Author keywords available]

Indexed keywords

PORPHYRINS; REDOX REACTIONS; SEMICONDUCTOR DEVICES; SILICON;

EID: 0344395599     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1090677     Document Type: Article
Times cited : (530)

References (17)
  • 5
    • 0344006449 scopus 로고    scopus 로고
    • note
    • The requirement for electronic components to be stable at elevated operating temperatures stems from the facts that (i) heat dissipation in current chips causes operating temperatures to reach as high as 85°C and (ii) these components must function in harsh external environments with extremes in temperature. The latter requirement prevails regardless of whether components can be designed wherein the intrinsic heat dissipated is small during device operation.
  • 6
    • 0345300806 scopus 로고    scopus 로고
    • note
    • 9 memory cells would fail in the first 10 min of operation.
  • 9
    • 0037076633 scopus 로고    scopus 로고
    • K. M. Roth et al., Langmuir 18, 4030 (2002).
    • (2002) Langmuir , vol.18 , pp. 4030
    • Roth, K.M.1
  • 12
    • 0345300805 scopus 로고    scopus 로고
    • note
    • Deep-trench capacitors in DRAM cells typically hold ∼40 fF at 1.5 V (16). The leakage rates of these capacitors requires that the cell be refreshed at least every 100 ms. As device sizes decrease further, the leakage rates will increase, thereby increasing the required refresh rate. Unless longer charge-retention times can be achieved in semi-conductor-based devices, the refresh characteristics of the device will impose limits on the ultimate feature size. These limits may well be encountered before the device is limited by the failure of the bulk properties of semiconductors that are expected when feature sizes reach tens of nanometers (2, 3). In contrast, the charge-retention characteristics of porphyrins are an intrinsic molecular property. Hence, the charge-retention time is independent of the size of the memory cell, even for cell dimensions of tens of nanometers, where each cell would contain an ensemble of many hundreds of electrically noninteracting porphyrins (9).
  • 14
    • 0001407911 scopus 로고    scopus 로고
    • K. M. Kadish, K. M. Smith, R. Guilard, Eds. (Academic, San Diego, CA), 349-398
    • H. J. Callot, R. Ocampo, in The Porphyrin Handbook, K. M. Kadish, K. M. Smith, R. Guilard, Eds. (Academic, San Diego, CA, 2000), vol. 1, pp. 349-398.
    • (2000) The Porphyrin Handbook , vol.1 , pp. 349-398
    • Callot, H.J.1    Ocampo, R.2
  • 15
    • 0001430189 scopus 로고
    • D. Dolphin, Ed. (Academic, New York)
    • J. Fajer, D. Davis, in The Porphyrins, D. Dolphin, Ed. (Academic, New York, 1978), vol. IV, pp. 197-256.
    • (1978) The Porphyrins , vol.4 , pp. 197-256
    • Fajer, J.1    Davis, D.2
  • 17
    • 0344869503 scopus 로고    scopus 로고
    • note
    • This work was supported by the Defense Advanced Research Projects Agency Moletronics Program (MDA972-01-C-0072) and by ZettaCore, Incorporated. We thank K. Mobley (ZettaCore, Incorporated) for insightful comments on DRAM operating characteristics.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.