Type

Journal Article

Authors

Dermot Brabazon
Patrick J. McNally
Denis P. Dowling
Mahfujur Rahman
David Moore

Subjects

Engineering

Topics
light absorption solar cells materials electronics surface texture surfaces mechanical engineering surface morphology

Laser machined macro and micro structures on glass for enhanced light trapping in solar cells (2013)

Abstract In order to increase the efficiency of solar cell modules it is necessary to make the optimum use of light incident upon them. Much research has been done on improving light absorption through front surface texturisation and light trapping schemes. Laser light is commonly used in industry for various applications including marking and texturisation. By controlling laser parameters, it is possible to tailor macro and micro structures in most materials. The CO2 laser used in this investigation emits radiation at 10.6 μm with the ability to pulse in the micro-second range. The laser was used to ablate grooved textures in the fused quartz material, used in this study as the light trapping medium, following which an analysis of the effects of the laser parameters on the texture geometry and surface morphology was performed through a combination of cross sectioning and scanning electron microscopy. Transmission through the textured glass was improved for most samples after acid etching. The light trapping effects of the best performing textures were analysed by investigating the effects on a silicon solar cell’s performance at varying angles of incidence. Results indicated a significant increase in light trapping when light was incident at acute angles. For an angle of incidence of 10◦ a relative increase in efficiency of up to 51 % was observed.
Collections Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Mechanical and Manufacturing Engineering
Ireland -> Dublin City University -> Subject = Engineering: Mechanical engineering
Ireland -> Dublin City University -> Subject = Engineering: Electronics
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Electronic Engineering
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing
Ireland -> Dublin City University -> Subject = Engineering: Materials
Ireland -> Dublin City University -> Subject = Engineering

Full list of authors on original publication

Dermot Brabazon, Patrick J. McNally, Denis P. Dowling, Mahfujur Rahman, David Moore

Experts in our system

1
Dermot Brabazon
Dublin City University
Total Publications: 162
 
2
Patrick J. McNally
Dublin City University
Total Publications: 47
 
3
Denis P. Dowling
University College Dublin
Total Publications: 50
 
4
David Moore
Dublin City University
Total Publications: 6