Method for recycling perovskite-based photoelectric conversion element

Patent metadata

Field	Value
Publication number	US-10847324-B2
Application number	US-201615771160-A
Country	US
Kind code	B2
Filing date	Oct 24, 2016
Priority date	Oct 30, 2015
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

The present invention relates to a method which can effectively remove perovskite light absorbers, hole transport layers, metal electrodes, and the like by immersing a waste perovskite-based photoelectric conversion element module in a cleaning solution under predetermined conditions. The present invention can recover a substrate from the waste module and manufacture a photoelectric conversion element having a photoelectric conversion efficiency level comparable to the initially high level again, using the same.

First claim

What is claimed is:

1. A method for recycling a waste module of a perovskite photoelectric conversion element, comprising the step of immersing a waste module of a perovskite photoelectric conversion element in a washing solvent for a period of time satisfying Equation 1:
y=ax 1 −b   [Equation 1]

wherein y is the immersion time (min), x 1 is a dipole moment of the washing solvent, a is a constant of 700 to 850, and b is a constant of 4 to 6, wherein the dipole moment of the washing solvent is 1.5 or more, wherein the perovskite photoelectric conversion element comprises a transparent electrode layer, a hole blocking layer, an electron collecting layer, a light absorbing layer comprising an organometallic halide perovskite, a hole transporting layer, and a metal electrode layer sequentially attached on a transparent substrate, and wherein the light absorbing layer, the hole transporting layer, and the metal electrode layer are removed by immersing in the washing solvent.

2. A method for recycling a waste module of a perovskite photoelectric conversion element comprising the steps of:
adjusting a pH of a washing solvent; and
immersing a waste module of a perovskite photoelectric conversion element in the washing solvent for a period of time satisfying Equation 2 in relation to the pH of the washing solvent:
y =[[ ce dx2 ] c ·exp( dx 2 )  [Equation 2]

wherein y is the immersion time (min), x 2 is the pH of the washing solvent, c is a constant of 40 to 50 and d is a constant of about 0.3 to 0.9.

3. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 2 , wherein the waste module has a light absorbing layer containing an organometallic halide, and the washing solvent is capable of S N 2 reaction with the organometallic halide.

4. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 3 , wherein the perovskite photoelectric conversion element has a transparent electrode layer, a hole blocking layer, an electron collecting layer, a light absorbing layer, a hole transporting layer, and a metal electrode layer sequentially formed on a transparent substrate.

5. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 4 , wherein the light absorbing layer, the hole transporting layer, the metal electrode layer or a combination thereof is removed by immersing in the washing solvent, and further comprising recycling a substructure having the transparent electrode layer and the electron collecting layer.

6. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 5 , further comprising a step of forming a light absorbing layer, a hole transporting layer, a metal electrode layer or a combination thereof on the recycled substructure.

7. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 2 , wherein the washing solvent comprises water.

8. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 2 , wherein the washing solvent comprises alcohol.

9. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 1 , wherein the washing solvent is capable of S N 2 reaction with the organometallic perovskite halide.

10. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 1 , further comprising recycling a substructure having the transparent electrode layer and the electron collecting layer.

11. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 10 , further comprising a step of forming a light absorbing layer, a hole transporting layer, a metal electrode layer or a combination thereof on the recycled substructure.

12. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 11 , wherein the perovskite photoelectric conversion element is a perovskite solar cell.

13. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 1 , wherein the hole transporting layer comprises spiro-MeOTAD or P3HT and a p-type dopant.

14. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 1 , wherein the organometallic halide perovskite comprises Pb.

15. The method for recycling a waste module of a perovskite photoelectric conversion element according to claim 1 , wherein the electron collecting layer comprises a metal oxide.

Assignees

• Global Frontier Ct Multiscale Energy Systems
• Research & Business Found Sungkyunkwan Univ
• Global Frontier Center for Multiscale Energy
• Res & Business Foundation Sungyunkwan

Inventors

• Jung Hyun Suk
• Kim Byeong Jo
• Kim Dong Hoe
• Kwon Seung Lee
• Lee Dong Geon
• Jin Young Un
• Park So Yeon

Classifications

• H01G9/2059 Primary

  comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution · CPC title

• H10K85/50

  Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3 · CPC title

• H10K30/50

  Photovoltaic [PV] devices · CPC title

• H10F77/12 Primary

  Active materials · CPC title

• H10F77/126

  comprising only Group I-III-VI chalcopyrite materials, e.g. CuInSe2, CuGaSe2 or CuInGaSe2 [CIGS] · CPC title