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Antimony-doped organic-inorganic tin-based perovskite luminescent material and preparation method and application thereof
Active Publication Date: 2021-11-23
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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However, Ge 2+ and Sn 2+ Easily oxidized to +4 valence, resulting in structural instability
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[0082] The present invention also provides a method for preparing an antimony-doped organic-inorganic metal halide material, comprising the following steps:
[0083] 1) After mixing 1-phenylpiperazine source, tin source, antimony source and hydrochloric acidsolvent, and reacting by hydrothermal method, antimony-doped organic-inorganic metal halide is obtained.
[0084] In the present invention, the 1-phenylpiperazine source preferably includes 1-phenylpiperazine and / or 1-phenylpiperazine source acid salt, more preferably 1-phenylpiperazine or 1-phenylpiperazine Piperazine source acid salt.
[0085] In the present invention, the tin source preferably includes stannous chloride.
[0086] In the present invention, the antimony source preferably includes antimony chloride and / or antimony acetate, more preferably antimony chloride or antimony acetate.
[0114] (1) 0.98mmol stannous chloride and 0.02mmol antimony chloride are mixed and dissolved with 5ml concentrated hydrochloric acid to obtain a tin-antimony precursor solution;
[0115] (2) 1mmol 1-phenylpiperazine is mixed and dissolved with 5ml concentrated hydrochloric acid to obtain 1-phenylpiperazine precursor solution;
[0116] (3) Mix the precursor solutions prepared in steps (1) and (2), then place the mixed solution in a 25ml reaction kettle, raise the temperature to 110°C for 5h, keep the temperature for 10h, and drop to room temperature at 1°C / h to obtain the reaction Product mixing system.
[0117] (4) filtering the reaction product mixture system prepared in step (3), washing with ethanol, and freeze-drying to obtain antimony-doped organic-inorganic tin-based perovskite.
Embodiment 2
[0119] (1) 0.96mmol stannous chloride and 0.04mmol antimony chloride are mixed and dissolved with 5ml concentrated hydrochloric acid to obtain a tin-antimony precursor solution;
[0120] (2) 1mmol 1-phenylpiperazine is mixed and dissolved with 5ml concentrated hydrochloric acid to obtain 1-phenylpiperazine precursor solution;
[0121] (3) Mix the precursor solutions prepared in steps (1) and (2), then place the mixed solution in a 25ml reaction kettle, raise the temperature to 110°C for 5h, keep the temperature for 10h, and drop to room temperature at 1°C / h to obtain the reaction Product mixing system.
[0122] (4) filtering the reaction product mixture system prepared in step (3), washing with ethanol, and freeze-drying to obtain antimony-doped organic-inorganic tin-based perovskite.
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Abstract
The invention provides an antimony-doped organic-inorganic tin-based metalhalide material. The antimony-doped organic-inorganic tin-based metalhalide material has a chemical formula as shown in a formula (I), (C10N2H16)SnCl6: xSb<3+> (I); wherein x is more than 0 and less than 0.1; the antimony-doped organic-inorganic tin-based metalhalide material is an antimony-doped phenylpiperazine-tin-based metal halide material. According to the antimony-doped organic-inorganic tin-based metal halide material with the specific structure and composition, fluorescence emission throughout the whole visible light range is achieved. The stability is high, the optical performance is excellent, and the higher fluorescencequantum efficiency of 76.5% can be obtained. Meanwhile, the preparation method is simple in synthesis step, mild in condition, low in cost of used raw materials, high in repeatability and suitable for large-scale production, popularization and application, and has certain popularization value in the fields of solid-phase white light LEDs for illumination and the like.
Description
technical field [0001] The invention belongs to the technical field of organic-inorganic metal halide luminescent materials, and relates to an antimony-doped organic-inorganic metal halide material and its preparation method and application, in particular to an antimony-doped organic-inorganic tin-based perovskite light emitting material Materials and their preparation methods and applications. Background technique [0002] Lead Halide APbX 3 (A=Cs, MA, FA; X=Cl, Br, I) perovskite has the characteristics of adjustable emission spectrum, wide spectral absorption, high fluorescencequantum efficiency, narrow emission line, and high carrier mobility. The field of luminescent materials has attracted extensive attention. These excellent properties demonstrate its promising application prospects in photodetectors, solid-state lasers, and light-emitting diodes (LEDs). However, the lead toxicity and poor stability of lead halide perovskites limit their further commercial applicat...
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