Title :
Broad-band absorption enhancement in lower absorption coefficient region in CZTS solar cells with embedded aluminum nanoparticles into absorber layer
Author :
Sundara Murthy Mopurisetty;Balakrishna Ananthoju;Mohit Bajaj;M. Aslam;Swaroop Ganguly
Author_Institution :
Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai- 400076, India
fDate :
6/1/2015 12:00:00 AM
Abstract :
Finite-difference-time-domain (FDTD) electromagnetic calculations are performed for a CZTS solar cell with embedded 100 nm aluminum (Al) nanoparticles (NPs) in the absorber layer. We predict significantly enhanced absorption for wavelengths where absorption is intrinsically low. Overall, over 17% enhancement is predicted in absorbed photon flux and (maximum attainable) current density below the absorber band gap. These are due to near-field enhancement by localized surface plasmon resonance (LSPR) and far-field enhancement by scattering from Al NPs. The increase in absorbed photon flux is explained through Mie scattering calculations in Lumerical FDTD.
Keywords :
"Finite difference methods","Time-domain analysis","Gallium arsenide","Optical films","Optical reflection","Optical scattering","Absorption"
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd
DOI :
10.1109/PVSC.2015.7355785