20 February 2018 High performance organic ultraviolet photodetectors based on m-MTDATA
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We demonstrate highly efficient organic ultraviolet photodetectors using 4,4’,4’’ -tris[3-methyl-pheny(phenyl) amino] triphenylamine (m-MTDATA) and aluminum Tris(8-Hydroxyquinolinate) Synonym Alq3). The optimized photodetector delivers a photocurrent of 1.40 mA/cm2 at10 V, corresponding to a response of 127 mA/W under an illumination of 375 nm UV light irradiation with an intensity of 10.5 mW/cm2 and a detectivity of 2.15×1011 cm Hz1/2 /W. The high response is attributed to the larger band offset at m-MTDATA/ Alq3 heterojunction, the suppression of radiative decay of m-MTDATA and efficient electron transfer from m-MTDATA to Alq3. The working mechanism of harvesting high performance is also discussed in detail.
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Zhongli Zhao, Zhongli Zhao, Xiaofeng Bai , Xiaofeng Bai , Yubin Shang, Yubin Shang, Jikai Yang, Jikai Yang, Baozeng Li, Baozeng Li, De Song, De Song, "High performance organic ultraviolet photodetectors based on m-MTDATA", Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106970U (20 February 2018); doi: 10.1117/12.2309749; https://doi.org/10.1117/12.2309749

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