Processing and Characterization of Vacuum-Free CuInSe2 Thin Films from Nanoparticle-Precursors using Novel Temperature Treatment Techniques

Journal article
(Original article)


Publication Details

Author(s): Schuster M, Sisterhenn P, Graf L, Wellmann P
Journal: International Journal of Nanoparticle Research
Publication year: 2018
Volume: 2
Journal issue: 4
Language: English


Abstract


The objective of this work is the processing and characterization of a dense CuInSe2 solar-cell-absorber-layer based on nanoparticulate precursors. Bimetallic copper-indium- and elemental selenium-nanoparticles were synthesized by wetchemical processes and then dispersed in organic solvents as nano-inks. These inks were then printed into different layerstacks on a molybdenum coated float-glass-substrate via doctorblading. The temperature treatment to transform these layerstacks into dense CISe thin films was investigated, using a faceto-

face technique and mechanically applied pressure or the repetition of coating and annealing. All absorber layers were characterized with SEM, EDX and XRD. Dense, coarse grained

CuInSe2 layers with a thickness ≈ 7 μm were formed and the application of mechanical pressure shows potential to reduce thickness and sinter together the nanoparticles to large grains of ca. 3 μm in size. The face-to-face-annealing ensured keeping a stoichiometric ratio of (Cu+In) / Se ≈ 1, and can help reducing the content of oxides, even when the annealing is performed in ambient atmosphere. With a repetition of coating and annealing, dense CISe layers could be produced at low temperature of only 350 °C.



FAU Authors / FAU Editors

Schuster, Matthias
Professur für Werkstoffwissenschaften (Werkstoffe der Elektrotechnik)
Wellmann, Peter Prof. Dr.-Ing.
Professur für Werkstoffwissenschaften (Werkstoffe der Elektrotechnik)


How to cite

APA:
Schuster, M., Sisterhenn, P., Graf, L., & Wellmann, P. (2018). Processing and Characterization of Vacuum-Free CuInSe2 Thin Films from Nanoparticle-Precursors using Novel Temperature Treatment Techniques. International Journal of Nanoparticle Research, 2(4).

MLA:
Schuster, Matthias, et al. "Processing and Characterization of Vacuum-Free CuInSe2 Thin Films from Nanoparticle-Precursors using Novel Temperature Treatment Techniques." International Journal of Nanoparticle Research 2.4 (2018).

BibTeX: 

Last updated on 2018-08-08 at 01:31