RGB-Colored Cu(In,Ga)(S,Se) 2 Thin-Film Solar Cells with Minimal Efficiency Loss Using Narrow-Bandwidth Stopband Nano-Multilayered Filters

Soyoung Lee, Gang Yeol Yoo, Byungwoo Kim, Min Kyu Kim, Changwook Kim, Sang Yeun Park, Hee Chang Yoon, Woong Kim, Byoung Koun Min, Young Rag Do

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Colorful Cu(In,Ga)(S,Se) 2 (CIGSSe) thin-film solar cells were achieved by integrating a narrow-bandwidth stopband filter (NBSF) on a CIGSSe cell. The full range of visible color of NBSF could be realized by depositing one-dimensional nano-multilayers of alternating high-index (Al 2 O 3 ) and low-index (SiO 2 ) films while controlling the thickness of each layer and the number of stacked layers. Particularly, high-purity red, green, and blue (RGB) colors were generated on black CIGSSe cells with minimal harvest efficiency drop, showing power conversion efficiency (PCE) losses for the red and green CIGSSe cells of 4.2 and 1.2%, respectively, with no reduction in the PCE of the blue CIGSSe cell. The minimal drop in the harvest efficiency was attributed to the antireflection effect of the NBSF and the low overlap between the reflectance spectrum of NBSFs with a narrow stopband and the absorption spectrum of CIGSSe. The esthetic value could be further enhanced through the color variation of the RGB NBSF with viewing angle, so-called pearl-like colors. The synergetic effect of minimal efficiency loss, full color realization, and the pearl-like color change of the newly developed NBSFs can make CIGSSe cells applicable to building-integrated photovoltaics.

Original languageEnglish
Pages (from-to)9994-10003
Number of pages10
JournalACS Applied Materials and Interfaces
Volume11
Issue number10
DOIs
Publication statusPublished - 2019 Mar 13

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Color
Bandwidth
Conversion efficiency
Thin film solar cells
Absorption spectra
Multilayers

Keywords

  • building-integrated photovoltaics
  • CIGSSe solar cells
  • colorful solar cells
  • narrow-bandwidth stopband filter
  • solution process

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

RGB-Colored Cu(In,Ga)(S,Se) 2 Thin-Film Solar Cells with Minimal Efficiency Loss Using Narrow-Bandwidth Stopband Nano-Multilayered Filters . / Lee, Soyoung; Yoo, Gang Yeol; Kim, Byungwoo; Kim, Min Kyu; Kim, Changwook; Park, Sang Yeun; Yoon, Hee Chang; Kim, Woong; Min, Byoung Koun; Do, Young Rag.

In: ACS Applied Materials and Interfaces, Vol. 11, No. 10, 13.03.2019, p. 9994-10003.

Research output: Contribution to journalArticle

Lee, Soyoung ; Yoo, Gang Yeol ; Kim, Byungwoo ; Kim, Min Kyu ; Kim, Changwook ; Park, Sang Yeun ; Yoon, Hee Chang ; Kim, Woong ; Min, Byoung Koun ; Do, Young Rag. / RGB-Colored Cu(In,Ga)(S,Se) 2 Thin-Film Solar Cells with Minimal Efficiency Loss Using Narrow-Bandwidth Stopband Nano-Multilayered Filters In: ACS Applied Materials and Interfaces. 2019 ; Vol. 11, No. 10. pp. 9994-10003.
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