Oxidation effects on CuIn xGa 1-xSe yS 2-y thin film growth by solution processes

Se Jin Park, Eunjoo Lee, Hyo Sang Jeon, Jihye Gwak, Min-Kyu Oh, Byoung Koun Min

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The oxidation effects on CuIn xGa 1-xSe yS 2-y (CIGS) thin film growth by precursor solution based coating method with a three-step heat treatment process (oxidation, sulfurization, and selenization) were investigated to optimize the oxidation conditions for realizing highly efficient thin film solar cells. Oxidation by air-annealing at elevated temperature after coating with Cu, In, and Ga precursor solution on Mo-coated soda-lime glasses removed residual carbon impurities, resulting in nearly carbon-free CIGS film. However, the air-annealing at above 400 °C induced undesirable oxidation of a Mo layer coated on a soda-lime glass substrate, which deteriorated solar cell performance, particularly open circuit voltage. The optimum air-annealing temperature resulting in minimal carbon impurities, as well as Mo oxidation, was found to be around 350 °C, and the CIGS film synthesized with this optimum oxidation condition exhibited ∼ 4% solar cell efficiency at standard irradiation conditions.

Original languageEnglish
Pages (from-to)3048-3053
Number of pages6
JournalThin Solid Films
Volume520
Issue number7
DOIs
Publication statusPublished - 2012 Jan 31

Fingerprint

Film growth
Thin films
Oxidation
oxidation
thin films
Carbon
solar cells
calcium oxides
Annealing
Lime
annealing
coating
carbon
air
Solar cells
Air
Impurities
Glass
Coatings
impurities

Keywords

  • Air-annealing
  • CuIn Ga Se S
  • Oxidation
  • Solar cells
  • Thin films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Oxidation effects on CuIn xGa 1-xSe yS 2-y thin film growth by solution processes. / Park, Se Jin; Lee, Eunjoo; Jeon, Hyo Sang; Gwak, Jihye; Oh, Min-Kyu; Min, Byoung Koun.

In: Thin Solid Films, Vol. 520, No. 7, 31.01.2012, p. 3048-3053.

Research output: Contribution to journalArticle

Park, Se Jin ; Lee, Eunjoo ; Jeon, Hyo Sang ; Gwak, Jihye ; Oh, Min-Kyu ; Min, Byoung Koun. / Oxidation effects on CuIn xGa 1-xSe yS 2-y thin film growth by solution processes. In: Thin Solid Films. 2012 ; Vol. 520, No. 7. pp. 3048-3053.
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