Title:
SOLAR CELL
Document Type and Number:
Japanese Patent JP2009026887
Kind Code:
A
Abstract:
To enhance efficiency by absorbing the light penetrating a multiple quantum well layer again by a third semiconductor layer, and to enhance energy efficiency by decreasing the number of layers in the multiple quantum well layer thereby suppressing recombination on the interface.
The multiple quantum well layer 28 is constituted by laminating a plurality of barrier layers 33, and well layers 34 having a band gap smaller than that of the barrier layer 33 alternately. The third semiconductor layer having a band gap smaller than that of the barrier layer 33 and thicker than the well layer 34 is provided contiguously to the barrier layer 33 located at the end on the side opposite to the light receiving surface side.
Inventors:
MATSUI YUUKI
FUNAMOTO AKIHIRO
AOYAMA SHIGERU
FUNAMOTO AKIHIRO
AOYAMA SHIGERU
Application Number:
JP2007187302A
Publication Date:
February 05, 2009
Filing Date:
July 18, 2007
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
H01L31/04; B82Y20/00; H01L31/0352; H01L31/06; H01L31/075
Attorney, Agent or Firm:
Masafusa Nakano