Broadband,high-sensitivity self-powered ferroelectric LuMnO3-based photodetector with large photocurrent output |
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| Affiliation: | 1. Universidad Autónoma de Nuevo León, Av. Universidad No., 66451, San Nicolás de los Garza, Mexico;2. Departamento de Mecánica, Facultad de Ingeniería, Campus Coatzacoalcos, Universidad Veracruzana, Av. Universidad km 7.5 Col. Santa Isabel, Coatzacoalcos, 96535, Veracruz, Mexico;3. Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica, Escuela de Minas, Energía y Materiales, Universidad de Oviedo, Calle Independencia, s/n, 33004, Oviedo/Uviéu, Asturias, Spain;4. Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo (UO), Principado de Asturias (PA), Avda. de la Vega, 4-6, 33940, El Entrego, Spain;1. Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa;2. Surface Engineering Research Laboratory, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa;3. Department of Electrical Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa;1. School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, PR China;2. Aerospace Business Department, China Academy of Launch Vehicle Technology, Beijing, 100076, PR China;3. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, 150080, PR China;1. College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui, 741001, China;2. College of Chemistry and Materials Science, Longyan University, Longyan, 364012, China;1. Key Laboratory of Marine New Materials and Related Technology, Key Laboratory of Marine Materials and Protective Technologies of Zhejiang Province, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, No.1219 Zhongguan West Road, Ningbo, 315201, China;2. Key Laboratory of Pressure System and Safety, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China;3. AECC Commercial Aircraft Engine Co., LTD, China;4. School of Mechanical Engineering, Anhui Polytechnic University, Wuhu, 241000, China |
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| Abstract: | The broadband spectrum detection from ultraviolet to near-infrared is hankered in the photoelectric applications of imaging, sensing and communication. Here, a new self-powered photodetector based on ferroelectric LuMnO3 thin film with a narrow bandgap of 1.46 eV exhibits high-sensitivity ultraviolet–visible–near infrared photodetection properties. The responsivity (R) and detectivity (D*) in sunlight are 0.4 A/W and 7.05 × 1011 Jones, which are much higher than that of other ferroelectric photodetectors. Moreover, under the monochromatic light (900 nm), the R and D* can reach 0.39 A/W and 6.89 × 1011 Jones. The outstanding photodetection performances owed to the large photocurrent output, where the short-circuit current density can reach 10.5 mA/cm2 under 1 sun illumination. The synergistic effect of ferroelectric photovoltaic effect and interface barrier effect demonstrates that the multi-driving forces can achieve high dissociation efficiency for photon-generated carriers. The excellent photodetection performances open up new application of ferroelectric materials in broadband self-powered photodetectors. |
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| Keywords: | Ferroelectric Sol-gel Thin film Photodetector Polarization |
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