化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (3) : 235-239. DOI: 10.19817/j.cnki.issn1006-3536.2025.03.023

开发与应用

Sb³⁺掺杂全无机Cs₂InCl₅·H₂O钙钛矿的制备及白光LED应用

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Synthesis and application of Sb³⁺-doped all-inorganic Cs₂InCl₅·H₂O perovskite for white LED

Wei Xingming, Wang Rongfang, Wei Qingmin, Huang Xiaoying, Tao Pingfang, Zhang Hao

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Received		Published
2024-02-24		2025-03-20
Issue Date	Revised Date
2025-03-19	2024-02-24

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摘要

以氧化铟、氧化锑和氯化铯为基本原料,浓盐酸作为溶剂,采用低温水热法合成Sb³⁺掺杂全无机Cs₂InCl₅·H₂O(Cs₂InCl₅·H₂O∶Sb³⁺)钙钛矿。研究了Sb³⁺的掺杂量(0、2%、4%、6%、8%、10%、20%)对Cs₂InCl₅·H₂O钙钛矿发光性能的影响。采用紫外-可见分光光谱、荧光光谱和X射线衍射仪(XRD)等表征该样品的吸收光谱、发光性能和晶体结构。结果表明,少量Sb³⁺掺杂Cs₂InCl₅·H₂O钙钛矿不会改变其结构。当Sb³⁺的掺杂量为10%时,达到最强荧光发射,发射峰波长约为620nm,荧光寿命为8.13μs。采用荧光转换法,将实验合成的Cs₂InCl₅·H₂O∶Sb³⁺钙钛矿纳米晶与商用蓝色发光的BaMgAl₁₀O₁₇∶Eu和绿色发光的(Sr,Ba)₂SiO₄∶Eu荧光粉混合涂于365nm的紫外芯片上,封装得到显色指数(CRI)为91.8,CIE色坐标为(0.326,0.316),色温为5843K的白光LED。说明Cs₂InCl₅·H₂O∶Sb³⁺钙钛矿纳米晶在白光LED领域具有很好的应用前景。

Abstract

Sb³⁺-doped all-inorganic Cs₂InCl₅·H₂O(Cs₂InCl₅·H₂O∶Sb³⁺) perovskite was synthesized by low-temperature hydrothermal method with indium oxide,antimony oxide,and cesium chloride as raw materials and concentrated hydrochloric acid as solvent.The effects of doping amounts of Sb³⁺(0,2%,4%,6%,8%,10%,20%) on the luminescence performance of Cs₂InCl₅·H₂O perovskite were studied in detail.The absorption spectra,luminescence properties and crystal structure of the samples were characterized via X-ray diffraction,fluorescence spectroscopy and UV-Vis absorption spectrometry.The results showed that the crystal structure of Cs₂InCl₅·H₂O perovskite was not changed with the introduction of a small amount of Sb³⁺.The maximum fluorescence emission was achieved,with an emission peak wavelength of about 620nm and a fluorescence lifetime of 8.13 us when the doping amount of Sb³⁺ was 10%.A white LED was fabricated by coating the phosphors,mixing the red light-emitting Cs₂InCl₅·H₂O∶Sb³⁺ perovskite,blue light-emitting BaMgAl₁₀O₁₇∶Eu,and green light-emitting(Sr,Ba)₂SiO₄∶Eu,onto a 365nm UV chip.The white LED showed a high color rendering index (CRI) of 91.8,CIE color coordinates of (0.326,0.316),and a color temperature of 5843 K,which indicated that Cs₂InCl₅·H₂O∶Sb³⁺ perovskite had significant potential for application in white LEDs.

关键词

Cs₂InCl₅·H₂O∶Sb³⁺ / 钙钛矿 / 发光二极管 / 荧光

Key words

Cs₂InCl₅·H₂O∶Sb³⁺ / perovskite / LEDs / fluorescence

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Sb³⁺掺杂全无机Cs₂InCl₅·H₂O钙钛矿的制备及白光LED应用[J]. 化工新型材料, 2025, 53(3): 235-239 DOI:10.19817/j.cnki.issn1006-3536.2025.03.023

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