***** Congratulations! Our third Nano Energy (IF 12.3) Paper Publication*****
Photoactive Piezoelectric Energy Harvester Driven by Antimony Sulfoiodide (SbSI): A AVBVICVII Class Ferroelectric-Semiconductor Compound
Yuvasree Purusothaman†, Nagamalleswara Rao Alluri‡, Arunkumar Chandrasekhar†, Sang-Jae Kim
Department of Mechatronics Engineering, Jeju National University, Jeju 63243,
Republic of Korea.
Antimony sulfoiodide (SbSI) has been demonstrated to act as an effective energy harvester due to its ferroelectric-semiconductor characteristics. This has furthered the advancement of futuristic self-powered optoelectronic devices. We studied the feasibility of designing an SbSI-based piezoelectric nanogenerators (PNGs) with polymer matrix interfaces, such as polydimethylsiloxane (PDMS), polyvinylidene fluoride (PVDF) and polymethyl methacrylate (PMMA). SbSI/PMMA composites exhibit promising states with respect to the potential establishment of SbSI/PMMA piezoelectric nanogenerator (S-PNG). Furthermore, as-fabricated S-PNG is highly stable, with an average peak to peak electrical response of ~ 5 V and 150 nA. The employment of SbSI overcomes the limitations of PNGs made of insulator materials, enabling the generation of dual harvesters. The piezo-phototronic properties of SbSI/PMMA composite and single SbSI micro rod (SMR) were extensively investigated. These harvesters incorporate both mechanical and optical sources, thereby providing broad opportunities for the expansion of piezoelectronic material systems.
Keywords: Antimony sulfoiodide (SbSI), ferroelectric, semiconductor, polymer interfaces, energy harvester, piezo-phototronic effect