Journal
NANO ENERGY
Volume 57, Issue -, Pages 911-923Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2019.01.005
Keywords
Lead-free MASnI(3); Antisolvent-assisted collision technique; Dielectric property; Piezoelectric energy; PVDF-MASnI(3) composite PENGs
Categories
Funding
- National Research Foundation of Korea (NRF) - Korean government (MSIP) [NRF-2018R1A2A1A05018536]
- Institute for Information & Communications Technology Promotion (IITP) - Korean Government (Ministry of Science, ICT and Future Planning, MSIT) [2017-0-00052]
- Vietnam National Foundation for Science and Technology Development [103.02-2017.25]
- Institute for Information & Communication Technology Planning & Evaluation (IITP), Republic of Korea [2017-0-00052-002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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An environmentally-friendly lead-free methylammonium tin iodide (MASnI(3)) perovskite is successfully synthesized using a facile approach of an antisolvent-assisted collision technique (ACT) under room ambient conditions, which results stability within 24 h under ambient room conditions. The phase transition of MASnI3 from tetragonal to cubic is first observed at similar to 30 degrees C. Polycrystalline MASnI(3) films reveal a high dielectric constant of similar to 65 at 100 kHz, a low-leakage current density of 7x10(-7) A cm(-2) at 50 kV cm(-1), well-developed P-E hysteresis loops, and a high piezoelectric coefficient (d(33)) of 20.8 pm V-1. The MASnI(3) piezoelectric nanogenerator (PENG) shows an output voltage of similar to 3.8 V and an output current density of 0.35 mu A cm(-2). To enhance the piezoelectric output performance, the MASnI(3) films are composited with an environmentally friendly PVDF polymer that had a porous structure. The PVDF-MASnI(3) composite based-PENG reveals a maximum output voltage of similar to 12.0 V and current density of similar to 4.0 mu A cm(-2). A green light-emitting diode (LED) using the PVDF-MASnI(3) PENGs is instantly lighted without need of a storage device, and long-term stability of the composite PENGs is validated for 90 days. This simple and cost-effective solution process is feasible for the fabrication of large-scale, high-performance, and environmental-friendly PENGs based on lead-free organic-inorganic perovskites to extensively implicate in medical and biomechanical applications.
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