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Highly Polarization-Sensitive, Broadband, Self-Powered Photodetector Based on Graphene/PdSe2/Germanium Heterojunction.
ACS Nano. 2019 Sep 24; 13(9):9907-9917.AN

Abstract

Polarization-sensitive photodetection in a broad spectrum range is highly desired due to the great significance in military and civilian applications. Palladium diselenide (PdSe2), a newly explored air-stable, group 10 two-dimensional (2D) noble metal dichalcogenide with a puckered pentagonal structure, holds promise for polarization-sensitive photodetection. Herein, we report a highly polarization-sensitive, broadband, self-powered photodetector based on graphene/PdSe2/germanium heterojunction. Owing to the enhanced light absorption of the mixed-dimensional van der Waals heterojunction and the effective carrier collection with graphene transparent electrode, the photodetector exhibits superior device performance in terms of a large photoresponsivity, a high specific detectivity, a fast response speed to follow nanosecond pulsed light signal, and a broadband photosensitivity ranging from deep ultraviolet (DUV) to mid-infrared (MIR). Significantly, highly polarization-sensitive broadband photodetection with an ultrahigh polarization sensitivity of 112.2 is achieved, which represents the best result for 2D layered material-based photodetectors. Further, we demonstrated the high-resolution polarization imaging based on the heterojunction device. This work reveals the great potential of 2D PdSe2 for high-performance, air-stable, and polarization-sensitive broadband photodetectors.

Authors+Show Affiliations

School of Physics and Engineering, and Key Laboratory of Material Physics, Ministry of Education , Zhengzhou University , Zhengzhou , Henan 450052 , China.School of Physics and Engineering, and Key Laboratory of Material Physics, Ministry of Education , Zhengzhou University , Zhengzhou , Henan 450052 , China.College of Physics and Materials Science , Henan Normal University , Xinxiang , Henan 453007 , China.College of Physics and Materials Science , Henan Normal University , Xinxiang , Henan 453007 , China.Department of Applied Physics and Materials Research Center , The Hong Kong Polytechnic University , Hung Hom , Kowloon , Hong Kong, China.School of Physics and Engineering, and Key Laboratory of Material Physics, Ministry of Education , Zhengzhou University , Zhengzhou , Henan 450052 , China.School of Physics and Engineering, and Key Laboratory of Material Physics, Ministry of Education , Zhengzhou University , Zhengzhou , Henan 450052 , China.School of Physics and Engineering, and Key Laboratory of Material Physics, Ministry of Education , Zhengzhou University , Zhengzhou , Henan 450052 , China.School of Physics and Engineering, and Key Laboratory of Material Physics, Ministry of Education , Zhengzhou University , Zhengzhou , Henan 450052 , China.Department of Applied Physics and Materials Research Center , The Hong Kong Polytechnic University , Hung Hom , Kowloon , Hong Kong, China.Institute of Functional Nano & Soft Materials (FUNSOM) , Soochow University , Suzhou , Jiangsu 215123 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31361122

Citation

Wu, Di, et al. "Highly Polarization-Sensitive, Broadband, Self-Powered Photodetector Based On Graphene/PdSe2/Germanium Heterojunction." ACS Nano, vol. 13, no. 9, 2019, pp. 9907-9917.
Wu D, Guo J, Du J, et al. Highly Polarization-Sensitive, Broadband, Self-Powered Photodetector Based on Graphene/PdSe2/Germanium Heterojunction. ACS Nano. 2019;13(9):9907-9917.
Wu, D., Guo, J., Du, J., Xia, C., Zeng, L., Tian, Y., Shi, Z., Tian, Y., Li, X. J., Tsang, Y. H., & Jie, J. (2019). Highly Polarization-Sensitive, Broadband, Self-Powered Photodetector Based on Graphene/PdSe2/Germanium Heterojunction. ACS Nano, 13(9), 9907-9917. https://doi.org/10.1021/acsnano.9b03994
Wu D, et al. Highly Polarization-Sensitive, Broadband, Self-Powered Photodetector Based On Graphene/PdSe2/Germanium Heterojunction. ACS Nano. 2019 Sep 24;13(9):9907-9917. PubMed PMID: 31361122.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Highly Polarization-Sensitive, Broadband, Self-Powered Photodetector Based on Graphene/PdSe2/Germanium Heterojunction. AU - Wu,Di, AU - Guo,Jiawen, AU - Du,Juan, AU - Xia,Congxin, AU - Zeng,Longhui, AU - Tian,Yongzhi, AU - Shi,Zhifeng, AU - Tian,Yongtao, AU - Li,Xin Jian, AU - Tsang,Yuen Hong, AU - Jie,Jiansheng, Y1 - 2019/08/02/ PY - 2019/7/31/pubmed PY - 2019/7/31/medline PY - 2019/7/31/entrez KW - PdSe2 KW - broadband photodetection KW - heterojunction KW - polarization-sensitive photodetector KW - two-dimensional materials SP - 9907 EP - 9917 JF - ACS nano JO - ACS Nano VL - 13 IS - 9 N2 - Polarization-sensitive photodetection in a broad spectrum range is highly desired due to the great significance in military and civilian applications. Palladium diselenide (PdSe2), a newly explored air-stable, group 10 two-dimensional (2D) noble metal dichalcogenide with a puckered pentagonal structure, holds promise for polarization-sensitive photodetection. Herein, we report a highly polarization-sensitive, broadband, self-powered photodetector based on graphene/PdSe2/germanium heterojunction. Owing to the enhanced light absorption of the mixed-dimensional van der Waals heterojunction and the effective carrier collection with graphene transparent electrode, the photodetector exhibits superior device performance in terms of a large photoresponsivity, a high specific detectivity, a fast response speed to follow nanosecond pulsed light signal, and a broadband photosensitivity ranging from deep ultraviolet (DUV) to mid-infrared (MIR). Significantly, highly polarization-sensitive broadband photodetection with an ultrahigh polarization sensitivity of 112.2 is achieved, which represents the best result for 2D layered material-based photodetectors. Further, we demonstrated the high-resolution polarization imaging based on the heterojunction device. This work reveals the great potential of 2D PdSe2 for high-performance, air-stable, and polarization-sensitive broadband photodetectors. SN - 1936-086X UR - https://www.unboundmedicine.com/medline/citation/31361122/Highly_Polarization_Sensitive_Broadband_Self_Powered_Photodetector_Based_on_Graphene/PdSe2/Germanium_Heterojunction_ L2 - https://dx.doi.org/10.1021/acsnano.9b03994 DB - PRIME DP - Unbound Medicine ER -
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