The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2016
Filed:
Dec. 21, 2012
Xiamen Sanan Optoelectronics Technology Co., Ltd., Xiamen, CN;
Jingfeng Bi, Tianjin, CN;
Guijiang Lin, Tianjin, CN;
Jianqing Liu, Tianjin, CN;
Weiping Xiong, Tianjin, CN;
Minghui Song, Tianjin, CN;
Liangjun Wang, Tianjin, CN;
Jie Ding, Tianjin, CN;
Zhidong Lin, Tianjin, CN;
Xiamen Sanan Optoelectronics Technology Co., Ltd., Xiamen, CN;
Abstract
A four-junction quaternary compound solar cell and a method thereof are provided. Forming a first subcell () with a first band gap, a lattice constant matching with the substrate on an InP grown substrate, forming a second subcell () with a second band gap bigger than the first band gap, a lattice constant matching with the substrate on the first subcell, forming a graded buffer layer () with a third band gap bigger than the second band gap on the second subcell, forming a third subcell () with a fourth band gap bigger than the third band gap, a lattice constant smaller than the substrate on the graded buffer layer, forming a fourth subcell () with a fifth band gap bigger than the fourth band gap, a lattice constant matching with the third subcell on the third subcell, and then forming the required four-junction solar cell then by succeeding process including removing the grown substrate, bonding a support substrate, forming electrodes, evaporating an anti-reflect film and so on.