SnHPO4: A Layered Tin(II) Phosphate with Enhanced Birefringence

IF 4.3 2区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR
Xinyue Shi, Xueqing Liu, Chunxiao Nie, Yangkai Zhang, Degao Zhong, Bing Teng, Zhoubin Lin, Yisheng Huang, Shijia Sun
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Abstract

As promising optoelectronic functional materials in the short-wavelength spectral region, such as ultraviolet (UV) and deep UV, phosphates have recently received increased attention. However, phosphate materials commonly suffer from limited birefringence owing to the highly symmetrical PO4 tetrahedra. We herein report a layered tin(II) phosphate with improved birefringence. By employing a polarizing microscope, the measured refractive index difference determined on a (010) wafer is 0.042@550 nm, which is very close to the calculated refractive index difference of 0.039@550 nm between nx and nz through the density functional theory (DFT) method. The largest birefringence appears on the (100) plane, which is theoretically determined to be 0.078@550 nm. Single crystals of SnHPO4 measuring 20 × 4 × 3 mm3 can be easily grown by a hydrothermal method. In addition, SnHPO4 is UV transparent with a short UV absorption cutoff edge of 242 nm and an optical band gap of 4.50 eV, implying that it could be a potential UV birefringent material.

Abstract Image

SnHPO4:具有增强双折射的层状磷酸锡
磷酸盐作为一种在紫外和深紫外等短波长光谱区域具有发展前景的光电功能材料,近年来受到越来越多的关注。然而,磷酸盐材料通常由于高度对称的PO4四面体而遭受有限的双折射。本文报道了一种具有改进双折射特性的层状磷酸锡(II)。利用偏光显微镜测得(010)晶圆上的折射率差为0.042@550 nm,与密度泛函(DFT)方法计算得到的nx和nz之间的折射率差0.039@550 nm非常接近。最大的双折射出现在(100)平面上,理论上确定为0.078@550 nm。水热法制得尺寸为20 × 4 × 3 mm3的SnHPO4单晶。此外,SnHPO4具有紫外透明特性,其紫外吸收截止边较短,为242 nm,光学带隙为4.50 eV,这意味着它可能是一种潜在的紫外双折射材料。
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来源期刊
Inorganic Chemistry
Inorganic Chemistry 化学-无机化学与核化学
CiteScore
7.60
自引率
13.00%
发文量
1960
审稿时长
1.9 months
期刊介绍: Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.
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