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Highly efficient organic ultraviolet photodetectors based on excellent Cu (I) complexes

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Opto-Electronics Review

Abstract

We demonstrate high response organic ultraviolet photodetectors using 4,4′,4″-tris[3-methyl-pheny(phenyl)amino]tri-phenylamine (m-MTDATA) and two novel Cu(I) complexes, [Cu(DPEphos)(PyPhen)]BF4 (CuDP)(DPEphos = Bis [2-(diphenylphosphino)phenyl]ether, PyPhen = pyrazino[2,3-f][1,10]phenanthroline) and [Cu(DPEbenz)(PyPhen)]BF4 (CuBP) (DPEbenz = 1,2-bis(diphenylphosphino)benzene) to act as the electron donor and acceptor, respectively. Strong photoluminescence quenching of m-MTDATA by Cu(I) complexes is observed manifesting the efficient photoinduced charge transfer that occurs between m-MTDATA and Cu(I) complexes. The optimized photodetector based on CuBP exhibits a maximum response of 276 mA/W at −12 V under an illumination of 365 nm UV light irradiation with an intensity of 1.75 mW/cm2. The high response is attributed to feasible energy level match, efficient electron transfer from m-MTDATA to CuBP and skillful device design. More detailed working mechanism of harvesting high performance is also discussed.

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Authors and Affiliations

  1. College of Chemistry, Jilin Normal University, Siping, Jilin1, 36000, People’s Republic of China

    C. -B. Liu, M. Liu, X. -X. Zhang, L. Wang & S. Zhang

  2. College of Environmental Science and Engineering, Jilin Normal University, Siping, Jilin, 136000, People’s Republic of China

    B. Su & G. -B. Che

  3. Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Jilin Normal University, Siping, Jilin, 136000, People’s Republic of China

    C. -B. Liu, B. Su, M. Liu, X. -X. Zhang, L. Wang, S. Zhang, G. -B. Che & Z. -L. Xu

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  1. C. -B. Liu
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  2. B. Su
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  3. M. Liu
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  4. X. -X. Zhang
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  5. L. Wang
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  6. S. Zhang
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  8. Z. -L. Xu
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Correspondence to G. -B. Che.

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Liu, C.B., Su, B., Liu, M. et al. Highly efficient organic ultraviolet photodetectors based on excellent Cu (I) complexes. Opto-Electron. Rev. 21, 288–292 (2013). https://doi.org/10.2478/s11772-013-0093-7

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  • DOI: https://doi.org/10.2478/s11772-013-0093-7

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