Double-Layer Antireflection Coatings for CIGS Thin-Film Solar Cells

Faiz Ahmad, Benjamin J. Civiletti, Peter B. Monk, Akhlesh Lakhtakia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Antireflection coatings are vital for reducing loss due to optical reflection in photovoltaic solar cells. A single-layer magnesium fluoride (MgF2) antireflection coating is usually used in thin-film CIGS solar cells. According to optics, this coating can be effective only for a narrow spectral regime. Further reduction of reflection loss may require an optimal single-layer or multi-layer coating. Hence, we optimized the refractive indices and thicknesses of single- and double-layer antireflection coatings for CIGS solar cells containing a CIGS absorber layer with: (i) homogeneous bandgap, (ii) linearly graded bandgap, or (iii) nonlinearly graded bandgap. A relative enhancement of up to 1.83% is predicted with an optimal double-layer antireflection coating compared to the efficiency with a single-layer antireflection coating.

Original languageEnglish (US)
Title of host publicationInternational Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022
EditorsGuru Subramanyam, Partha Banerjee, Akhlesh Lakhtakia, Nian X. Sun
PublisherSPIE
ISBN (Electronic)9781510660618
DOIs
StatePublished - 2023
EventInternational Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022 - Boston, United States
Duration: Aug 10 2022Aug 12 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12477
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022
Country/TerritoryUnited States
CityBoston
Period8/10/228/12/22

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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