Title:
２次元フォトニック結晶
Document Type and Number:
Japanese Patent JP5854383
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a two-dimensional photonic crystal used for reducing changes in and improving efficiency of characteristics dependent on a wavelength of light and an incident angle or the like in an optical device such as a solar cell and a photosensor.SOLUTION: The two-dimensional photonic crystal is composed by arranging, in a plate-like main body (photoelectric conversion layer 11), a different refractive index region 12 having a refractive index different from that of the main body at each lattice point of a two-dimensional lattice 16 parallel with the main body. Each of the different refractive index regions 12 is arranged in parallel with a two-dimensional lattice plane from each lattice point of the two-dimensional lattice 16, with being randomly deviated by only a deviation amount Δp equal to or smaller than the maximum deviation amount Δp(≠0). In the photoelectric conversion layer 11 including the two-dimensional photonic crystal structure, light absorption efficiency increases at a wavelength that is apart to some extent from a peak top of absorption efficiency at each wavelength, and thereby integral absorption efficiency across the whole of a specific wavelength band increases when Δpis equal to or less than a certain value. In addition, regardless of the Δpvalue, a change in the integral absorption efficiency by incident angle of light decreases.
Inventors:
Susumu Noda
Yoshinori Tanaka
Osquiy Ardavan
Fabucci Pedro
Hiroaki Shigeta
Shintaro Miyanishi
Hiroyuki Ogawa
Shuji Kawamori
Yoshinori Tanaka
Osquiy Ardavan
Fabucci Pedro
Hiroaki Shigeta
Shintaro Miyanishi
Hiroyuki Ogawa
Shuji Kawamori
Application Number:
JP2012019111A
Publication Date:
February 09, 2016
Filing Date:
January 31, 2012
Export Citation:
Assignee:
Kyoto University
Sharp Corporation
Sharp Corporation
International Classes:
G02B6/122; H01L31/0352
Domestic Patent References:
| JP2008283037A | ||||
| JP2006523956A | ||||
| JP2004061905A |
Foreign References:
| WO2011083674A1 | ||||
| WO2011083694A1 |
Other References:
宇野 和行,不規則度の異なるAlAs/GaAs不規則超格子の光励起発光特性(II),応用物理学関係連合講演会講演予稿集1994春3 Extended Abstracts (The 41st Spring Meeting, 1994);The Japan Society of Applied Physics and Related Societies No.3,(社)応用物理学会,1994年 3月,p.1198
Attorney, Agent or Firm:
Harakenzo world patent & trademark