Open AccessBias-dependence of luminescent coupling efficiency in multijunction solar cells
Author(s) -
Jieyang Jia,
Yu Miao,
Yangsen Kang,
Yijie Huo,
Mojgan Mazouchi,
Yusi Chen,
Li Zhao,
Huiyang Deng,
Pakapol Supaniratisai,
Sara H. AlQahtani,
James S. Harris
Publication year - 2015
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.23.00a219
Subject(s) - coupling (piping) , solar cell , materials science , luminescence , solar cell efficiency , diode , work (physics) , optoelectronics , optics , biasing , physics , voltage , thermodynamics , quantum mechanics , metallurgy
In this work, we demonstrate an improved method to simulate the characteristics of multijunction solar cell by introducing a bias-dependent luminescent coupling efficiency. The standard two-diode equivalent-circuit model with constant luminescent coupling efficiency has limited accuracy because it does not include the recombination current from photogenerated carriers. Therefore, we propose an alternative analytical method with bias-dependent luminescent coupling efficiency to model multijunction cell behavior. We show that there is a noticeable difference in the J-V characteristics and cell performance generated by simulations with a constant vs. bias-dependent coupling efficiency. The results indicate that introducing a bias-dependent coupling efficiency produces more accurate modeling of multijunction cell behavior under real operating conditions.