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Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (3): 503-506.

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Highly Efficient Organic Ultraviolet Photodetectors Based on Re(I) Complexes

LIU Chun-bo1, WANG Long1, LIU Min1, LI Chuan-bi1, LI Chun-mei1, CHE Guang-bo2, SU Bin2   

  1. 1. College of Chemistry, Jilin Normal University, Siping 136000, P. R. China;
    2. College of Environmental Engineering, Jilin Normal University, Siping 136000, P. R. China
  • Received:2011-08-15 Revised:2011-09-13 Online:2012-05-25 Published:2012-05-03
  • Contact: LI Chuan-bi, CHE Guang-bo E-mail:oledpvjlnu@yahoo.cn; guangbc2000@yahoo.com.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.60978059), the Program for New Century Excellent Talents in Universities of China(No.NCET-10-0176), the Key Project of Ministry of Education of China(No.210053) and the Natural Science Foundation of Jilin Province, China(Nos.20101543 and 20100549).

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Abstract: High response organic ultraviolet photodetectors(UV-PDs) were demonstrated with 4,4',4''- tris[3-methyl-pheny(phenyl)amino]triphenylamine(m-MTDATA) and two Re(I) complexes, (bathocuproine)- Re(CO)3Cl(Re-BCP) and (bathophenanthroline)Re(CO)3Cl(Re-Bphen) to act as the electron donor and acceptor, respectively. UV-PDs have the configuration of indium tin oxide(ITO)/m-MTDATA(25 nm)/m-MTDATA:Re-complex (25―35 nm)/Re-complex(20 nm)/LiF(1 nm)/Al(200 nm) with different blend layer thicknesses of 25, 30 and 35 nm. The optimized PD based on Re-Bphen offers a corrected-dark photocurrent up to 760 μA/cm2 at ?10 V, corresponding to a response of 310 mA/W which is among the best values reported for organic UV-PDs. Excellent electron transport ability makes for such high photo-to-electron conversion.

Key words: Organic ultraviolet photodetector, Re(I) complex, High electron transport ability