An alternative non-vacuum and low cost ESAVD method for the deposition of Cu(In,Ga)Se2 absorber layers

WANG, Mingqing, HOU, Xianghui, LIU, Junpeng, CHOY, KwangLeong, GIBSON, Paul, SALEM, Elhamali, KOUTSOGEORGIS, Demosthenes and CRANTON, Wayne (2015). An alternative non-vacuum and low cost ESAVD method for the deposition of Cu(In,Ga)Se2 absorber layers. Physica Status Solidi (A) Applications and Materials Science, 212 (1), 72-75.

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In this article, an environmentally friendly and non-vacuum electrostatic spray assisted vapor deposition (ESAVD) process has been developed as an alternative and low cost method to deposit CIGS absorber layers. ESAVD is a non-vacuum chemical vapor deposition based process whereby a mixture of chemical precursors is atomized to form aerosol. The aerosol is charged and directed towards a heated substrate where it would undergo decomposition and chemical reaction to deposit a stable solid film onto the substrate. A sol containing copper, indium, and gallium salts, as well as thiourea was formulated into a homogeneous chemical precursor mixture for the deposition of CIGS films. After selenization, both XRD and Raman results show the presence of the characteristic peaks of CIGSSe in the fabricated thin films. From SEM images and XRF results, it can be seen that the deposited absorbers are promising for good performance solar cells. The fabricated solar cell with a typical structure of glass/Mo/CIGSSe/CdS/i-ZnO/ITO shows efficiency of 2.82 under 100 mW cm-2 AM1.5 illumination. Keywrods : Aerosols; Chemical vapor deposition; Deposits; Electrostatics; Gallium; Mixtures; Semiconducting selenium compounds; Solar absorbers; Solar cells; Sols; Vapor deposition, Chalcopyrites; Characteristic peaks; Chemical precursors; CIGS absorber layers; CuInGaSe; Electrostatic spray-assisted vapor depositions; Selenization; Typical structures, Deposition

Item Type: Article
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Electronic Materials and Sensors Research Group
Identification Number:
Page Range: 72-75
Depositing User: Wayne Cranton
Date Deposited: 23 Jun 2016 11:31
Last Modified: 18 Mar 2021 18:15

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