title: Bias-dependence of luminescent coupling efficiency in multijunction solar cells.
abstract: 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.
authors.forename: Jieyang
authors.initials: J
authors.lastname: Jia
authors.forename: Yu
authors.initials: Y
authors.lastname: Miao
authors.forename: Yangsen
authors.initials: Y
authors.lastname: Kang
authors.forename: Yijie
authors.initials: Y
authors.lastname: Huo
authors.forename: Mojgan
authors.initials: M
authors.lastname: Mazouchi
authors.forename: Yusi
authors.initials: Y
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Zhao
authors.forename: Huiyang
authors.initials: H
authors.lastname: Deng
authors.forename: Pakapol
authors.initials: P
authors.lastname: Supaniratisai
authors.forename: Sara H
authors.initials: SH
authors.lastname: AlQahtani
authors.forename: James S
authors.initials: JS
authors.lastname: Harris