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Complex and method for producing same

A manufacturing method and complex technology, applied in bismuth compounds, final product manufacturing, tin organic compounds, etc., can solve the obstacles to the development of perovskite compounds, the inability to obtain excellent solar cells, and the difficulty in evaluating the performance of tin-containing perovskite compounds And other issues

Inactive Publication Date: 2019-09-17
KYOTO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the current situation, solar cells using tin-containing perovskite compounds lack reproducibility, and excellent solar cells cannot be obtained. It is also difficult to evaluate the original performance of tin-containing perovskite compounds, which also hinders the application of calcium Development of Perovskite Compounds for Titanium Solar Cells

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Embodiment

[0227] Although Examples and the like are shown below to describe the present invention in more detail, the present invention is not limited thereto. In addition, X-ray structural analysis was performed using Sheldrick, G.M. SHELX-97, Program for the Refinement of Crystal Structures; University of Gottingen: Gottingen, Germany, 1997.

reference example 1

[0228] Reference Example 1: Commercially available SnI 2 Sublimation purification

[0229] Figure 1~2 SnI used as raw material is shown 2 (99.9% trace metal basis, manufactured by High Purity Chemical Research Institute Co., Ltd.) 119 Results of Sn MAS NMR and TGA measurements.

[0230] Then, at image 3 The sublimation purification device shown is put into SnI 2 (99.9% trace metal basis, manufactured by High Purity Chemical Research Institute Co., Ltd.) 10.68 g and reduced pressure (100 Pa) at normal temperature. Put a cover-type electric heater in the sublimation purification device and reduce the pressure at 150°C for 10 hours (0.5mmHg), so as to obtain 2.09g of SnI in red crystals 4 (1st sublime). Thereafter, after cooling to room temperature at 330° C. under reduced pressure (0.5 mmHg) for 22 hours, the container was moved to a glove box (argon gas) to obtain 7.12 g of SnI as a red crystal of the sublimation product. 2 (2nd Sublime). The situation after purifi...

Embodiment 1

[0232] Example 1: SnI 2 ·DMF

[0233] SnI in the glove box 2 (4470 mg, 12 mmol; sublimation-purified product manufactured by Tokyo Chemical Industry Co., Ltd.) was dissolved in ultra-dehydrated DMF (3 mL; manufactured by Wako Pure Chemical Industries, Ltd.) at 50°C. Even after stirring for 1 hour, it was a suspension and not completely dissolved. The remaining insoluble matter was removed by filtration through a PTFE filter, the filtrate was transferred to a test tube with a screw cap, about 15 mL of dichloromethane as an anti-solvent was slowly injected, and recrystallization was performed by the double-layer diffusion method. After 2 days, SnI was obtained as colorless needle crystals 2 DMF. The recovery was 72% (3876 mg, 8.7 mmol). In addition, using the obtained single crystal, its detailed structure was clearly understood by single crystal X-ray crystal structure analysis ( Figure 9 ).

[0234] mp:68.5-75.0℃; 119 Sn MAS NMR(298MHz):δ-391.08( Figure 10 ).Cryst...

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Abstract

To provide a complex which contains a tin ion (Sn<2+>) or a bismuth ion (Bi<3+>) with a high purity and is suitable for the production of a lead-free perovskite compound. A complex which is represented by general formula (1A):SnX<n>.(m)L. (In the formula, X represents at least one halogen atom; L represents a polar solvent molecule; n represents a number of 1.5-2.5; and m represents a number of 0.3-1.9.)

Description

technical field [0001] The present invention relates to complexes and methods for their manufacture. Background technique [0002] In recent years, solar power generation has drawn attention as a clean energy source, and solar cells have been developed. A solar cell using a perovskite compound for a light absorbing layer is rapidly attracting attention as a next-generation solar cell that can be manufactured at low cost. For example, Non-Patent Document 1 proposes a solution-type solar cell in which a perovskite compound is used for a light-absorbing layer. In addition, Non-Patent Document 2 proposes that a solid-type perovskite-type solar cell exhibits high efficiency. [0003] As a perovskite compound used in perovskite solar cells, CH 3 NH 3 PB 3 and other lead-containing perovskite compounds. Recently, however, the development of high-performance perovskite-type solar cells with low environmental impact has been demanded, and the development of lead-free perovskite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/03C01G19/04C01G29/00C07C317/04C07F7/22H01L51/44C07F9/94
CPCY02E10/549C01G19/04C01G29/00C07C233/03C07C317/04C07F7/22C07F9/94Y02E10/542Y02P70/50H10K30/50C07F7/2204H01G9/2059H10K85/30H10K30/20
Inventor 若宫淳志尾崎雅司村田靖次郎
Owner KYOTO UNIV
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