Fluorescent CsPbBr3@Cs4PbBr6/PU polymer nanocomposite-based triboelectric nanogenerator for self-powered UV sensing

Simran Sainand, R. and Yashaswini, V. L. and Manjunatha, A. S. and Kavya, R. and Kushal, M. Gowda and Manjushree, N. and Unnikrishanan, G. and Rumana Farheen, S. M. and Sangamesha, M. A. and Bhagyashree, M. S. and Norek, Małgorzata and Jozwiak, Stanisław and Krishnaveni, S. and Madhukar, B. S. (2025) Fluorescent CsPbBr3@Cs4PbBr6/PU polymer nanocomposite-based triboelectric nanogenerator for self-powered UV sensing. Materials Today Chemistry, 44. ISSN 2468-5194

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Abstract

Redefining energy harvesting, triboelectric nanogenerators (TENGs) are emerging as revolutionary solutions for energy harvesting. Considering the triboelectric features and photoresponse of CsPbBr3@Cs4PbBr6, a new class of triboelectric energy harvesters and self-powered UV sensors have also been fabricated. Here an antisolvent reprecipitation technique is used to create CsPbBr3@Cs4PbBr6 (Mixed Dimensional Perovskite- MDP), which is testified by Field Emission Scanning Electron Microscope (FESEM) and X-ray Diffractogram. As prepared perovskite is successfully incorporated into the castor oil-based polyurethane to fabricate polymer nano- composite through solution casting method by varying the concentration of the nanofiller (0.00, 0.50, 1.00, 2.00 and 4.00 wt/wt%). Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) results suggest the successful integration of MDP/PU polymer nanocomposite. There is steady increase in glass transition temperature (Tg), which provides balance between enhanced thermal stability and flexibility. Also, the contact angle and Atomic Force Microscope (AFM) results show a gradual increase in water contact angle and surface roughness which has implications on TENG's performance. The electrical characterization shows that MDP/PU-TENG generated voltage/current of 382.02 V/68.86 mu A. The optimised MDP/PU-TENG could light up 33 commercial LEDs and can charge capacitors of different capacitances. Furthermore, the polymer nanocomposite exhibits photosensitivity towards UV radiation, showing that it can function as a photodetector. This work aims and elaborates on a novel category of self-sustaining photoactive triboelectric energy harvesters that have been developed taking, into account both photoresponse and triboelectric characteristics.

Item Type:	Article
Uncontrolled Keywords:	Triboelectric nanogenerator, CsPbBr3@Cs4PbBr6, Polyurethane nanocomposite, Photodetecto
Subjects:	C Chemical Science > Chemistry
Divisions:	Department of > Chemistry
Depositing User:	Ms Varalakshmi
Date Deposited:	03 Nov 2025 06:27
Last Modified:	03 Nov 2025 06:27
URI:	http://eprints.uni-mysore.ac.in/id/eprint/17897

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