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Organic-inorganic hybrid perovskite compound, method for preparing same, and solar cell comprising same

A technology of solar cells and compounds, applied in the field of solar cells, can solve the problems of insufficient reports of new perovskite materials, and achieve the effect of improving stability and low chemical stability

Active Publication Date: 2017-03-22
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, despite the disclosure of solar cells using perovskites, reports on novel perovskite materials are insufficient

Method used

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  • Organic-inorganic hybrid perovskite compound, method for preparing same, and solar cell comprising same
  • Organic-inorganic hybrid perovskite compound, method for preparing same, and solar cell comprising same

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0068] Preparation Example 1: Methylammonium iodide-d 5 preparation of

[0069] methylamine-d 5 Gas was injected and filled into a 2L vacuum flask. The flask was held for about 15 minutes until the gas condensed at -78°C (dry ice and acetone bath) to give a liquid. In the flask, inject 5 g of methanol-d via syringe 4 and stirred for 30 minutes. Then, the temperature was raised to 0°C. Hydroiodic acid (HI, 57% by weight) (22.66 mL, 0.17 mol) was injected, followed by stirring for 1.5 hours. Solvent was removed by rotary evaporator, washed with diethyl ether, filtered and dried in vacuo to prepare methylammonium iodide-d 5 (10.98 g, 80.4%).

[0070] 2 HNMR (rotation speed = 18kHz) (600MHz, ppm): 1.1 (3, s) 5.2 (2, s)

[0071] 1 H NMR (D 2 O(700MHz),ppm): 4.28(1,s)

preparation Embodiment 2

[0072] Preparation Example 2: Methylammonium Bromide-d 5 preparation of

[0073] Prepare methylammonium bromide-d in the same manner as Preparation Example 1 5 , except that hydrobromic acid (HBr, 48 wt%) was used instead of hydroiodic acid (HI, 57 wt%).

[0074] 2 H NMR (rotation speed = 18kHz) (600MHz, ppm): 1, 2(3, s) 5, 3(2, s)

[0075] 1 H NMR (D 2 O(700MHz),ppm): 4.30(1,s)

preparation Embodiment 3

[0076] Preparation Example 3: Methylammonium Chloride-d 5 preparation of

[0077] Prepare methylammonium chloride-d in the same manner as Preparation Example 1 5 , except that hydrochloric acid (HCl, 37% by weight) was used instead of hydroiodic acid (HI, 57% by weight).

[0078] 2 H NMR (rotation speed = 18kHz) (600MHz, ppm): 1.2(3, s) 5.4(2, s)

[0079] 1 H NMR (D 2 O(700MHz),ppm): 4.31(1,s)

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PUM

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Abstract

An organic-inorganic perovskite compound according to the present invention lowers the zero point energy, thereby improving chemical stability of the perovskite compound, thus improving stability of a solar cell. Therefore, the organic-inorganic hybrid perovskite compound according to the present invention can be favorably used as a light absorber of a solar cell.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2014-0174979 filed with the Korean Intellectual Property Office on December 8, 2014 and Korean Patent Application No. 10-2015-0144202 filed with the Korean Intellectual Property Office on October 15, 2015 , the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to organic-inorganic hybrid perovskite compounds with deuterium, their preparation methods and solar cells comprising them. Background technique [0004] In order to solve the depletion of fossil energy sources and global environmental problems caused by the use of the fossil energy sources, research on renewable and pure alternative energy sources such as solar energy, wind power, and water power has been actively promoted. [0005] Among these, interest in solar cells that can directly convert energy from sunligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/00C07F7/22C07F7/28C07F7/24H01L51/42H01L51/46H10K99/00
CPCC07F7/003C07F7/22C07F7/24C07F7/28H10K85/30H10K2102/00H01G9/2009H10K85/50Y02E10/549Y02E10/542H10K2102/102H10K85/00H10K30/151C07C209/68C07C211/63
Inventor 朴银石洪性佶全成浩柳东雨
Owner LG CHEM LTD
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