Rеvuе des Energies Renouvelables
Volume 15, Numéro 4, Pages 609-620
2012-12-31
One-step Electrodeposited Cuinse2 Absorber Layers For Efficient Pv Cells
Authors : Ndiaye B. . Mbow C. . Mane M.s. . Sène C. .
Abstract
Thin polycrystalline CuInSe2 (CIS) films for photovoltaic (PV) applications were deposited on molybdenum (Mo)-coated soda lime glass substrates by the one-step electrodeposition process. Films growth was carried out using low concentration aqueous sulfate-based single baths containing dilute CuSO4.5H2O, In2(SO4)3.H2O and SeO2. The electrodeposited CIS layers were studied using SEM, EDS, X-ray diffraction and optical analyses. It was found that film microstructure, composition and morphology strongly depend on the initial concentrations of Cu(II), In(III) and Se(IV) electro-active ionic species in the electrochemical bath. Investigations on the films structure have shown that as-deposited samples are composed of microcrystalline and/or amorphous materials and require recrystallization at high temperature for device processing. Annealing in H2Se atmosphere at 450 °C led to highly crystallized thin films exhibiting the chalcopyrite structure with a pronounced (112) orientation. Optimized processing conditions for high quality thin CIS absorber materials have been established and subsequent photovoltaic (PV) devices exhibited ~ 9% efficiency.
Keywords
Copper Indium Selenide, Absorber layers, Electrodeposition, Photovoltaic devices.
Les articles similaires
Benabadji Batoul
.
pages 69-75.
Azzedinne Tayebi
.
Mohammed Yaichi
.
Abdelkader Boutadara
.
Youcef Bakou
.
Abdelkader Hadidi
.
pages 206-211.
Mahdipoor Hamid Reza
.
pages 1-7.
Derouiche-boukhalfa Fatma Zohra
.
pages 45-47.
