Comparison of different thin film absorbers used in eta-solar cells

Abdelhak Belaidi, R. Bayón, L. Dloczik, K. Ernst, M. Ch Lux-Steiner, R. Könenkamp

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Alloying with mercury (Hg) has been used in electrodeposition as a means to reduce the bandgap of CdTe absorber films from 1.5 eV for CdTe to 1.07 eV for CdxHg1-xTe (CMT). Alloy films have been incorporated as extremely thin absorbers in solar cells with the structure glass|SnO2|microporous-TiO2|CMT|Au. The decrease in the CMT bandgap is expected to reduce the conduction band offset at the interface to TiO2, which is 0.6 eV for the TiO2|CdTe interface. This high band offset was believed to be responsible for the low fill-factor observed in the J-V characteristics of the former interface. Lowering the band offset is expected to lead to higher fill-factor values. Our results show that using a CMT as absorber gives place to both higher quantum efficiencies and a spectral response spectrum extended towards longer wavelengths, but not to a fill-factor enhancement.

Original languageEnglish
Pages (from-to)488-491
Number of pages4
JournalThin Solid Films
Volume431-432
DOIs
Publication statusPublished - 1 May 2003
Externally publishedYes

Fingerprint

absorbers
Solar cells
Energy gap
solar cells
Thin films
thin films
Conduction bands
Mercury
Quantum efficiency
Alloying
Electrodeposition
spectral sensitivity
electrodeposition
Glass
Wavelength
alloying
quantum efficiency
conduction bands
augmentation
glass

Keywords

  • Bandgap
  • CdHgTe
  • Electrodeposition
  • Eta-solar cell
  • Porous TiO

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Belaidi, A., Bayón, R., Dloczik, L., Ernst, K., Lux-Steiner, M. C., & Könenkamp, R. (2003). Comparison of different thin film absorbers used in eta-solar cells. Thin Solid Films, 431-432, 488-491. https://doi.org/10.1016/S0040-6090(03)00223-2

Comparison of different thin film absorbers used in eta-solar cells. / Belaidi, Abdelhak; Bayón, R.; Dloczik, L.; Ernst, K.; Lux-Steiner, M. Ch; Könenkamp, R.

In: Thin Solid Films, Vol. 431-432, 01.05.2003, p. 488-491.

Research output: Contribution to journalArticle

Belaidi, A, Bayón, R, Dloczik, L, Ernst, K, Lux-Steiner, MC & Könenkamp, R 2003, 'Comparison of different thin film absorbers used in eta-solar cells', Thin Solid Films, vol. 431-432, pp. 488-491. https://doi.org/10.1016/S0040-6090(03)00223-2
Belaidi A, Bayón R, Dloczik L, Ernst K, Lux-Steiner MC, Könenkamp R. Comparison of different thin film absorbers used in eta-solar cells. Thin Solid Films. 2003 May 1;431-432:488-491. https://doi.org/10.1016/S0040-6090(03)00223-2
Belaidi, Abdelhak ; Bayón, R. ; Dloczik, L. ; Ernst, K. ; Lux-Steiner, M. Ch ; Könenkamp, R. / Comparison of different thin film absorbers used in eta-solar cells. In: Thin Solid Films. 2003 ; Vol. 431-432. pp. 488-491.
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