Intense pulsed light sintering of electrodeposited CdS thin films

DHARMADASA, R, DHARMADASA, I and DRUFFEL, T (2014). Intense pulsed light sintering of electrodeposited CdS thin films. Advanced Engineering Materials, 16 (11), 1351-1361.

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In order to manufacture market competitive solar cells, material processing methods with low capital and running costs are required. One method for achieving this goal would be to use atmospheric processing techniques with a high throughput. Here, we report the use of intense pulsed light (IPL) to process cadmium sulfide (CdS) thin films. IPL is an ultra-fast and facile technique for the heat treatment of materials. Pulses of light from the UV to IR wavelengths are absorbed by the material, leading to localized heating and sintering. IPL has been used to successfully make Ag and Cu electrical contacts for use in electronic circuits, however little work exists on the use of IPL in the processing of semiconductor materials. CdS was selected due to its importance in solar cell manufacturing. This n-type semiconductor has been used as a "window" material in high efficiency CdTe and Cu In(1-x)GaxSe2-based solar cells. The effect of energy input and the energy density of the pulse on the films optical, compositional and morphological properties of the films was investigated using UV-Vis spectroscopy, XRD, and SEM. IPL sintering resulted in signi ficant improvement to the CdS crystallinity with processing times <2 mins.

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: 1351-1361
Depositing User: Hilary Ridgway
Date Deposited: 17 Mar 2014 09:03
Last Modified: 18 Mar 2021 10:45

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