Defect mitigation of thin-film hybrid perovskite and direct writing on a curved surface

Patent metadata

Field	Value
Publication number	US-10431393-B2
Application number	US-201815889806-A
Country	US
Kind code	B2
Filing date	Feb 6, 2018
Priority date	Mar 8, 2017
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A method for aerosol-jet printing a layered perovskite structure by applying a PEDOT:PSS layer to a substrate; applying a layer of lead iodide (PbI2) to the PEDOT:PSS layer; and applying an aerosol mist of methylammonium iodide (CH3NH3I) atop the PbI2 layer with an aerosol-jet nozzle to form a CH3NH3PbI3 perovskite film layer. The substrate may be an ITO glass substrate, and the PEDOT:PSS layer may be applied by a process selected from spin-coating, inkjet-printing, slot-die-coating, aerosol-jet printing, physical vapor deposition, chemical vapor deposition, and electrochemical deposition. The PbI2 layer may be applied by a process selected from spin-coating, aerosol-jet printing, inkjet-printing, slot-die-coating, physical vapor deposition, chemical vapor deposition, and electrochemical deposition, and the PbI2 for application to the PEDOT:PSS layer may be in a solution of DMF, DMSO, γ-butyrolactone, or a combination thereof.

First claim

What is claimed is:

1. A method for aerosol jet printing a layered perovskite structure, comprising:
a) applying a PEDOT:PSS layer to a substrate;
b) applying a layer of lead iodide (PbI 2 ) to the PEDOT:PSS layer; and
c) applying an aerosol mist of methylammonium iodide (CH 3 NH 3 I) atop the PbI 2 layer with an aerosol-jet nozzle to form a CH 3 NH 3 PbI 3 perovskite film layer.

2. The method for aerosol-jet printing a layered perovskite structure of claim 1 , wherein the substrate is an ITO glass substrate.

3. The method for aerosol-jet printing a layered perovskite structure of claim 1 , wherein the PEDOT:PSS layer is applied by a process selected from spin-coating, inkjet-printing, slot-die-coating, aerosol jet printing, physical vapor deposition, chemical vapor deposition, and electrochemical deposition.

4. The method for aerosol-jet printing a layered perovskite structure of claim 1 , wherein the PbI 2 layer is applied by a process selected from spin-coating, inkjet-printing, slot-die-coating, aerosol jet printing, physical vapor deposition, chemical vapor deposition, and electrochemical deposition.

5. The method for aerosol-jet printing a layered perovskite structure of claim 4 , further comprising
forming an aerosol mist of PbI 2 with an ultrasonic transducer; and
aerosol-printing the PbI 2 aerosol mist with an aerosol jet nozzle.

6. The method for aerosol-jet printing a layered perovskite structure of claim 1 , wherein the PbI 2 for application to the PEDOT:PSS layer is in a DMF solution, a DMSO solution, a γ-butyrolactone solution, or a combination of thereof.

7. The method for aerosol-jet printing a layered perovskite structure of claim 1 , further comprising annealing the PbI 2 layer at about 130° C. or lower.

8. The method for aerosol-jet printing a layered perovskite structure of claim 7 , wherein the step of annealing the PbI 2 layer is performed in the presence of DMF or DMSO vapor.

9. The method for aerosol-jet printing a layered perovskite structure of claim 1 , further comprising annealing the PbI 2 layer at about 80° C. or lower.

10. The method for aerosol-jet printing a layered perovskite structure of claim 1 , further comprising annealing the CH 3 NH 3 I layer at about 80° C. or lower.

11. The method for aerosol-jet printing a layered perovskite structure of claim 10 , wherein the step of annealing the CH 3 NH 3 I layer is performed in the presence of DMF or DMSO vapor.

12. The method for aerosol-jet printing a layered perovskite structure of claim 1 , further comprising annealing the CH 3 NH 3 I layer at about 130° C. or lower.

13. The method for aerosol-jet printing a layered perovskite structure of claim 1 , further comprising applying a layer of PC 71 BM atop the CH 3 NH 3 PbI 3 perovskite film layer and annealing at room temperature or above in the presence of a residual solvent for 24 hrs or less.

14. The method for aerosol-jet printing a layered perovskite structure of claim 13 , wherein the residual solvent comprises chlorobenzene and/or dichlorobenzene.

15. The method for aerosol-jet printing a layered perovskite structure of claim 13 , further comprising applying a layer of C 60 atop the PC 71 BM film layer.

16. The method for aerosol-jet printing a layered perovskite structure of claim 15 , further comprising applying a layer of aluminum (Al) atop the C 60 layer as a top electrode.

17. The method for aerosol-jet printing a layered perovskite structure of claim 1 , further comprising adjusting an atomizer flow rate (AFR) of the aerosol jet nozzle between about 10-25 sccm.

18. The method for aerosol-jet printing a layered perovskite structure of claim 1 , further comprising adjusting a sheath flow rate (SFR) of the aerosol jet nozzle between about 5-35 sccm.

19. The method for aerosol-jet printing a layered perovskite structure of claim 1 , further comprising forming the aerosol mist of methylammonium iodide (CH 3 NH 3 I) with one of a pneumatic transducer and an ultrasonic transducer.

Assignees

• Us Gov Air Force
• Us Air Force

Inventors

• Bag Santanu
• Deneault James R
• Durstock Michael F

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/0028

  Electricity · mapped topic

• H01L51/0037

  Electricity · mapped topic

• H01G9/20 Primary

  Light-sensitive devices · CPC title

• H01L51/4293

  Electricity · mapped topic