Open AccessOptical modeling and optimizations of Cu_2ZnSnSe_4 solar cells using the modified transfer matrix method
Author(s) -
D. Cozza,
Carmen M. Ruiz,
David Duché,
Sergio Giraldo,
Edgardo Saucedo,
J.J. Simón,
Ludovic Escoubas
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.0a1201
Subject(s) - stack (abstract data type) , transfer matrix method (optics) , materials science , photocurrent , kesterite , optics , layer (electronics) , scattering , matrix (chemical analysis) , transfer matrix , optoelectronics , light scattering , solar cell , matrix method , computer science , nanotechnology , czts , composite material , physics , computer vision , programming language
The fast and computationally inexpensive Modified Transfer Matrix Method (MTM) is employed to simulate the optical response of kesterite Cu 2 ZnSnSe 4 solar cells. This method can partially take into account the scattering effects due to roughness at the interfaces between the layers of the stack. We analyzed the optical behavior of the whole cell structure by varying the thickness of the TCO layer (iZnO + ITO) between 50 and 1200 nm and the buffer CdS layer between 0 and 100 nm. We propose optimal combinations of the TCO/CdS thicknesses that can locally maximize the device photocurrent. We provide experimental data that qualitatively confirm our theoretical predictions.