Multi layered anti-reflective coatings for ultra-thin CIGS solar cells

Author

Rajan, Ginu ; Ibdah, Abdel-Rahman ; Aryal, Krishna ; Collins, Robert W. ; Marsillac, Sylvain

Author_Institution

Dept. of Electr. & Comput. Eng., Old Dominion Univ., Norfolk, VA, USA

fYear

2013

fDate

16-21 June 2013

Firstpage

2026

Lastpage

2028

Abstract

In this study, we have developed top side multilayer stacks as anti-reflective coatings to serve as light traps in the red and near infrared where enhanced absorption is required for solar cells with ultra-thin Cu(In_1-xGa_x)Se₂ (CIGS) absorbers. Multiple AR layers were deposited on the solar cells and large increases in short circuit current density were observed. We have explored various materials in order to reduce overall AR coating thickness (and thus complexity) for ease of manufacturing.

Keywords

absorption; antireflection coatings; copper compounds; gallium compounds; indium compounds; integrated circuit manufacture; optical multilayers; photovoltaic cells; selenium compounds; short-circuit currents; solar cells; ternary semiconductors; CIGS; CIGS solar module production; absorption enhancement; multilayer stacks; multilayered antireflective coatings; optical films; overall AR coating thickness reduction; photovoltaic cells; short circuit current density; ultra-thin copper indium gallium selenide solar cells; Coatings; Hafnium compounds; Optical films; Optical reflection; Photovoltaic cells; Reflectivity; AR coatings; CIGS; ellipsometry; optical films; photovoltaic cells;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th

Conference_Location

Tampa, FL

Type

conf

DOI

10.1109/PVSC.2013.6744870

Filename

6744870