Fabrication of a Homogeneous, Integrated, and Compact Film of Organic–Inorganic Hybrid Ni(en)3Ag2I4 with Near-Infrared Absorbance and Semiconducting Features

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• 作者：Tian-Yu Chen ; Lei Shi ; Hao Yang ; Xiao-Ming Ren ; Chen Xiao ; Wanqin Jin
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：February 1, 2016
• 年：2016
• 卷：55
• 期：3
• 页码：1230-1235
• 全文大小：452K
• ISSN：1520-510X

文摘

The organic–inorganic hybrid crystal Ni(en)₃Ag₂I₄ (where en represents 1,2-ethylenediamine) crystallizes in hexagonal space group P6₃, in which the AgI₄^3– tetrahedra connect into a diamondlike inorganic framework via sharing of the vertex and the Ni(en)₃²⁺ octahedra fill in the pores of the framework. UV–vis–near-IR (NIR) spectroscopy disclosed that this hybrid shows intense NIR absorbance centered at ca. 870 nm, and the variable-temperature conductivity measurement revealed that the hybrid is a semiconductor with E_a = 0.46 eV. The electronic band structure of Ni(en)₃Ag₂I₄ was calculated using the density functional theory method, indicating that the NIR absorbance arises from d-d transition within the Ni²⁺ cation of Ni(en)₃²⁺. The homogeneous, compact, and transparent crystalline film of Ni(en)₃Ag₂I₄ was fabricated via a secondary seed growth strategy, which has promising application in NIR devices.