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Development of SnS nanocrystals and tuning of parameters for use as spectral selective photoabsorbers
Journal of Crystal Growth ( IF 1.7 ) Pub Date : 2020-03-01 , DOI: 10.1016/j.jcrysgro.2019.125460
Arun Banotra , Naresh Padha

Abstract SnS nanocrystals have been grown using solution method from vigorously stirred solution on filtration (S1) and direct solidification under constant temperature (S2). The work demonstrates comparison in terms of structure, optical, composition and morphology for the determination of nanocrystal characteristics. Both the synthesised samples possess herzenbergite orthorhombic SnS phase with crystallinity ∼ 31 and 69 nm determined from X-ray diffraction data. The structural results exhibit changes in most significant peak (MSP), lattice parameters, volume, axis strain, dislocation density and number of crystallites in the form of a deformed nanostructure due to the presence of inorganic-organic hybrid. The changes in optical parameters corroborated well with the PL results and exhibit high photosensitive character. Morphology and composition of the synthesised nanocrystals have also found in aggregate to structural and optical results. Besides this, FTIR spectrum exhibit strong and weak SnS characteristic peaks alongwith OH and H-O-H vibrations. In summary, synthesised SnS nanocrystals possess sharp transition with high photo absorption that can be employed significantly for various photonic applications.

中文翻译:

用于光谱选择性光吸收剂的 SnS 纳米晶体的开发和参数调整

摘要 SnS 纳米晶体已使用溶液法从剧烈搅拌的过滤溶液 (S1) 和恒温直接固化 (S2) 中生长。这项工作展示了在结构、光学、组成和形态方面的比较,用于确定纳米晶体的特性。两种合成的样品都具有从 X 射线衍射数据确定的结晶度约为 31 和 69 nm 的 Herzenbergite 斜方 SnS 相。由于无机-有机杂化物的存在,结构结果表现出最显着峰(MSP)、晶格参数、体积、轴应变、位错密度和变形纳米结构形式的微晶数量的变化。光学参数的变化很好地证实了 PL 结果,并表现出高光敏特性。合成的纳米晶体的形态和组成也被发现与结构和光学结果有关。除此之外,FTIR 光谱显示出强和弱的 SnS 特征峰以及 OH 和 HOH 振动。总之,合成的 SnS 纳米晶体具有高光吸收的急剧转变,可显着用于各种光子应用。
更新日期:2020-03-01
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