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A facile synthesis of Au-nanoparticles decorated PbI2 single crystalline nanosheets for optoelectronic device applications

机译:一种用于光电子器件应用的金纳米粒子修饰的PbI2单晶纳米片的简便合成

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摘要

This research communication presents a rapid and facile microwave-assisted synthesis of single crystalline nanosheets (SCNSs) of hexagonal lead iodide >(PbI2) decorated with Au nanoparticles, a potential optoelectronics material. Homogeneous low dimensional AuNP decoration in PbI2 resulted in a new absorption band at ~604 nm and a shift in band gap from 3.23 to 3.00 eV. The significant enhancement of photoluminescent (PL) intensity observed in the AuNP-PbI2 SCNSs is attributed to the coupling of the localized surface plasmon resonanzce of AuNP leading to improved excitation and emission rates of PbI2-SCNSs in the region of the localized electromagnetic field. The Au-PbI2 SCNSs display a compelling increment in photoconductivity, and its fabricated photodetector showed a stable and switchable photo-response. Due to ease of synthesis and enhanced photoconductivity along with appealing PL features, Au-PbI2 SCNS has the potential to be used as a material of choice when fabricating an optoelectronic devices of high performance.
机译:这项研究通讯提出了一种快速,简便的微波辅助合成,该合成的六方碘化铅>( PbI2)单晶纳米片(SCNS)饰有潜在的光电材料Au纳米粒子。 PbI2中均匀的低维AuNP装饰导致〜604 nm处出现新的吸收带,并且带隙从3.23到3.00 3.eV转移。在AuNP-PbI2 SCNSs中观察到的光致发光(PL)强度的显着增强归因于AuNP的局部表面等离振子共振,导致局部电磁场区域中PbI2-SCNSs的激发和发射速率提高。 Au-PbI2 SCNS在光电导率上显示出惊人的增长,并且其制造的光电探测器显示出稳定且可切换的光响应。由于易于合成,增强的光电导性以及吸引人的PL特性,Au-PbI2 SCNS有潜力在制造高性能光电器件时用作选择的材料。

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