Investigation of CuIn1-xGaxSe2 thin films co-evaporated from two metal sources for photovoltaic solar cells - Université d'Angers Accéder directement au contenu
Article Dans Une Revue Journal of Optoelectronics and Advanced Materials Année : 2017

Investigation of CuIn1-xGaxSe2 thin films co-evaporated from two metal sources for photovoltaic solar cells

A. Bouraoui
  • Fonction : Auteur
Y. Berredjem
  • Fonction : Auteur
A. Ain-Souya
  • Fonction : Auteur
A. Drici
  • Fonction : Auteur
Jean Christian Bernède
  • Fonction : Auteur
  • PersonId : 901200

Résumé

 CuIn1-xGaxSe2 (CIGS) thin films were grown by co-evaporation using two sources for the metal elements (Cu, Ga and In). A Mo coated soda lime glass substrates heated at 500 °C was used for the deposition. X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirm that these films are polycrystalline with a chalcopyrite structure and showed homogeneous grain size estimate about 25 nm. X-ray photoelectron spectroscopy (XPS) was performed to analyse the binding energy values of Ga3d and O1s onto CIGSe layers. The conductivity measurements in the temperature range of 40-400 K were carried out for 0.05≤ x ≤ 0.23. The effect of grain boundary scattering on the electrical transport played an important role in describing the transport processes in these films. The bowing factor is discussed taking into account the deposition techniques of CIGS films. It has been noticed that the open circuit voltage (Voc) is influenced by Ga content and the energy gap value of the absorber CIGS thin layers and yielded a poor efficiency of solar cells.

Domaines

Chimie
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Dates et versions

hal-02564568 , version 1 (05-05-2020)

Identifiants

  • HAL Id : hal-02564568 , version 1
  • OKINA : ua19986

Citer

A. Bouraoui, Y. Berredjem, A. Ain-Souya, A. Drici, A. Amara, et al.. Investigation of CuIn1-xGaxSe2 thin films co-evaporated from two metal sources for photovoltaic solar cells. Journal of Optoelectronics and Advanced Materials, 2017, 19 (5), pp.368 - 373. ⟨hal-02564568⟩
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