Multi-layered quasi-2D perovskite based triboelectric nanogenerator

Inorganic-organic perovskites are considered as one of the emerging candidates as a tribopositive material in triboelectric nanogenerators (TENG) owing to their unique functionalities. Among them, quasi-two-dimensional (quasi-2D) perovskites are promising materials for TENG due to layered nature, excellent environmental and chemical stability, tunability, and excellent electrical properties. Herein, we investigate the performance of TENG based on multiple series of perovskite layers using simple solution processing technique. The dimensionality of the perovskite layers is attained by changing the stoichiometric ratios of phenylethylammonium iodide (PEAI), lead iodide (PbI₂), methylammonium iodide (MAI). The quasi-2D based TENG generates the maximum output electrical performance with a voltage of 306 V, current of 4.71 µA, and maximum power density of 3.48 µW/cm² at the optimum value of (<n> = 5) due to the higher concentration of C–N and N–H groups. Moreover, the fabricated device shows stable performance for 12,000 cycles. The TENG device is further utilized to charge the various commercially available capacitors, for lightning of light-emitting diodes (LEDs), and to power up low-power electronic devices. These results demonstrate the effect of the dimensionality of perovskites on the output performance of the TENG for use in next-generation energy harnessing.