Method of manufacturing cigs-based solar cell and cigs-based solar cell

Patent metadata

Field	Value
Publication number	US-10283654-B2
Application number	US-201615363764-A
Country	US
Kind code	B2
Filing date	Nov 29, 2016
Priority date	Nov 17, 2016
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A method of manufacturing a CIGS-based solar cell including a transparent rear electrode, the method comprising forming a rear electrode layer including a transparent oxide material; forming rear electrode patterns including a metal material on the rear electrode layer; forming a CIGS-based light absorption layer on the rear electrode layer on which the rear electrode patterns are formed; forming a buffer layer on the light absorption layer; and forming a front electrode including a transparent material on the buffer layer, wherein the rear electrode patterns are provided with a transmissive portion, through which light is transmitted, formed between patterns of the metal material.

First claim

What is claimed is:

1. A method of manufacturing a CIGS-based solar cell, the method comprising:
forming a rear electrode layer including a transparent oxide material;
forming rear electrode patterns including a metal material on the rear electrode layer;
forming a CIGS-based light absorption layer on the rear electrode layer on which the rear electrode patterns are formed;
forming a buffer layer on the light absorption layer; and
forming a front electrode including a transparent material on the buffer layer,
wherein the rear electrode patterns are provided with a transmissive portion, through which light is transmitted, formed between patterns of the metal material,
wherein the forming the rear electrode patterns includes:
attaching spherical particles to a surface of the rear electrode layer so that the spherical particles are arranged close together;
immerging the spherical particles attached to the surface of the rear electrode layer in an organic solvent to increase an area occupied by the spherical particles per unit area of the rear electrode layer;
depositing the metal material on a space between the spherical particles which are arranged close together; and
removing the spherical particles to form the transmissive portion.

2. The method of claim 1 , wherein the rear electrode patterns are size controlled by controlling the size of the spherical particles.

3. The method of claim 1 , wherein the spherical particles includes a polystyrene material.

4. The method of claim 3 , wherein the organic solvent is acetone.

Assignees

• Korea Inst Energy Res

Inventors

• Kim Kihwan
• Yun Jae-Ho
• Gwak Jihye
• Ahn Seung-Kyu
• Cho Jun-Sik
• Park Joo-Hyung
• Eo Young-Joo
• Yoo Jin-Su
• Ahn Se-Jin
• Cho Ara

Classifications

• Y02E10/544

  Solar cells from Group III-V materials · CPC title

• Y02E10/50

  Photovoltaic [PV] energy · CPC title

• H01L31/0543

  Electricity · mapped topic

• H01L31/022483

  Electricity · mapped topic

• H01L31/0547

  Electricity · mapped topic