Ping-ping YU, Wei DUAN, Yan-feng JIANG. Fabrication and Photoelectric Properties of Self-powered Photodetectors Based on Se Nanoflower/Polyaniline Heterojunctions[J]. Chinese journal of luminescence, 2020, 41(11): 1391-1396.
DOI:
Ping-ping YU, Wei DUAN, Yan-feng JIANG. Fabrication and Photoelectric Properties of Self-powered Photodetectors Based on Se Nanoflower/Polyaniline Heterojunctions[J]. Chinese journal of luminescence, 2020, 41(11): 1391-1396. DOI: 10.37188/CJL.20200224.
Fabrication and Photoelectric Properties of Self-powered Photodetectors Based on Se Nanoflower/Polyaniline Heterojunctions
Self-powered photodetectors operating without any power supply are urgently needed in modern optoelectronic devices from the perspective of energy saving
portability and miniaturization. In this work
a novel heterojunction structure based on p-type selenium nanocrystalline flowers(Se-f) and p-type polyaniline(PANI) was prepared by
in-situ
polymerization. The high surface area of Se-f structure can absorb more light energy
which is conducive to the effective separation of hole electron pairs. PANI nanorods are deposited directly on Se-f surfaces to form high-quality heterojunctions
which enhance the generation of hole electron pairs. Se-f/PANI photodetector exhibits good light response in range of 300-700 nm under 0 V bias
especially under 610 nm light with the highest responsivity(72.9 mA·W
-1
)
good detection rate(1.98×10
12
Jones)
and fast response(rise time of 8.6 μs and decay time of 3.24 ms). This work will provide a new way for the development of high-performance energy-saving organic/inorganic optoelectronic devices in the future.
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references
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