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Zhuang J, Lo WS, Zhou L, et al. Photo-reactive charge trapping memory based on lanthanide complex. Sci Rep. 2015;5:14998doi: 10.1038/srep14998.
Zhuang, J., Lo, W. S., Zhou, L., Sun, Q. J., Chan, C. F., Zhou, Y., Han, S. T., Yan, Y., Wong, W. T., Wong, K. L., & Roy, V. A. (2015). Photo-reactive charge trapping memory based on lanthanide complex. Scientific reports, 514998. https://doi.org/10.1038/srep14998
Zhuang, Jiaqing, et al. "Photo-reactive charge trapping memory based on lanthanide complex." Scientific reports vol. 5 (2015): 14998. doi: https://doi.org/10.1038/srep14998
Zhuang J, Lo WS, Zhou L, Sun QJ, Chan CF, Zhou Y, Han ST, Yan Y, Wong WT, Wong KL, Roy VA. Photo-reactive charge trapping memory based on lanthanide complex. Sci Rep. 2015 Oct 09;5:14998. doi: 10.1038/srep14998. PMID: 26449199; PMCID: PMC4598868.
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Sci Rep. 2015 Oct 09;5:14998. doi: 10.1038/srep14998.

Photo-reactive charge trapping memory based on lanthanide complex.

Scientific reports

Jiaqing Zhuang, Wai-Sum Lo, Li Zhou, Qi-Jun Sun, Chi-Fai Chan, Ye Zhou, Su-Ting Han, Yan Yan, Wing-Tak Wong, Ka-Leung Wong, V A L Roy

Affiliations

  1. Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong SAR.
  2. Department of Applied Biological and Chemical Technology, The Hong Kong Polytechnic University, Hung Hum, Hong Kong SAR.
  3. Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR.

PMID: 26449199 PMCID: PMC4598868 DOI: 10.1038/srep14998

Abstract

Traditional utilization of photo-induced excitons is popularly but restricted in the fields of photovoltaic devices as well as photodetectors, and efforts on broadening its function have always been attempted. However, rare reports are available on organic field effect transistor (OFET) memory employing photo-induced charges. Here, we demonstrate an OFET memory containing a novel organic lanthanide complex Eu(tta)3ppta (Eu(tta)3 = Europium(III) thenoyltrifluoroacetonate, ppta = 2-phenyl-4,6-bis(pyrazol-1-yl)-1,3,5-triazine), in which the photo-induced charges can be successfully trapped and detrapped. The luminescent complex emits intense red emission upon ultraviolet (UV) light excitation and serves as a trapping element of holes injected from the pentacene semiconductor layer. Memory window can be significantly enlarged by light-assisted programming and erasing procedures, during which the photo-induced excitons in the semiconductor layer are separated by voltage bias. The enhancement of memory window is attributed to the increasing number of photo-induced excitons by the UV light. The charges are stored in this luminescent complex for at least 10(4) s after withdrawing voltage bias. The present study on photo-assisted novel memory may motivate the research on a new type of light tunable charge trapping photo-reactive memory devices.

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