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21 August 2020 Nonlinear microscopy of lead iodide nanosheets
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Abstract
Lead iodide (PbI2) is a layered material with unique optical and electrical properties. Despite being extensively studied in its bulk form and being used as a precursor for perovskite materials, the recently developed PbI2 nanosheets have shown a great promise for high-performance optoelectronic devices, such as flexible photodetectors, heterostructure photodetectors and nanolasers. These novel applications of PbI2 nanosheets, however, require careful characterisation of their crystalline structure. Here we experimentally and numerically demonstrate the nonlinear microscopy of PbI2 nanosheets. It is a non-invasive optical technique to precisely determine the thickness, crystalline orientation and strain.
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Jingshi Yan, Qingdong Ou, Maria A. Vincenti, Costantino De Angelis, Qiaoliang Bao, and Dragomir Neshev "Nonlinear microscopy of lead iodide nanosheets", Proc. SPIE 11465, Low-Dimensional Materials and Devices 2020, 114650M (21 August 2020); https://doi.org/10.1117/12.2567928
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