JIAN-BIN WANG, XIAO-SHENG TANG, BI ZHOU, et al. High-performance Ultraviolet Inorganic-organic Composite Structure Photodetectors Based on Electric Field Control. [J]. Chinese journal of luminescence, 2022, 43(1): 103-109.
DOI:
JIAN-BIN WANG, XIAO-SHENG TANG, BI ZHOU, et al. High-performance Ultraviolet Inorganic-organic Composite Structure Photodetectors Based on Electric Field Control. [J]. Chinese journal of luminescence, 2022, 43(1): 103-109. DOI: 10.37188/CJL.20210317.
High-performance Ultraviolet Inorganic-organic Composite Structure Photodetectors Based on Electric Field Control增强出版
The ultraviolet inorganic-organic composite structure photodetectors with an architecture of ITO/ZnO/P3HT∶ITIC/Ag were fabricated by a solution spin-coating method. In the blended film
the weight ratio of polymer donor(P3HT) to non-fullerene small molecule acceptor(ITIC) is 100∶1. Due to the discontinuity of carrier transport-channel
the dark current density of devices under zero bias voltage is very small(5.8×10
-10
A·cm
-2
)
which provides the condition for devices to realize the external electric-field adjustable and photocurrent multiplied. Under forward bias voltages
the free electrons and holes generated by the zinc oxide(ZnO) interfacial layer through absorbing ultraviolet light can participate in carrier transport(reducing the probability of carrier recombination)
thereby improving the external quantum efficiency(EQE) of devices. With the increase of forward bias voltages
ZnO interfacial layer can work together with active layer(P3HT∶ITIC) to multiply the photocurrent of devices. Under 45 V bias
the EQE spectral response-peak with a minimum half height width of about 49 nm can be obtained by devices at 350 nm
with the highest EQE
responsivity and detectivity of 420000%
1 185 A·W
-1
and 1.8×10
13
Jones
respectively. The above content provides an effective strategy to fabricate high-performance ultraviolet narrowband inorganic-organic composite structure photodetectors based on electric-field adjustment.
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Related Author
Jian-bin WANG
Xiao-sheng TANG
Bi ZHOU
Xia-hui ZENG
Hua-liang YU
Ying-wu ZHOU
JIANG Yan
GAO Feng
Related Institution
College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications
College of Physics & Electronics Information Engineering, Minjiang University
Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University
School of Photoelectric Engineering, Changchun University of Science and Technology
Physics Department, Harbin Institute of Technology