Numerical modeling of photon recycling and luminescence coupling in non-ideal multijunction solar cell

Mengyang Yuan; Zheng Lyu; Jieyang Jia; Yusi Chen; Yi Liu; Yijie Huo; Yu Miao; James Harris

doi:10.1117/12.2213362

14 March 2016 Numerical modeling of photon recycling and luminescence coupling in non-ideal multijunction solar cell

Mengyang Yuan, Zheng Lyu, Jieyang Jia, Yusi Chen, Yi Liu, Yijie Huo, Yu Miao, James Harris

Proceedings Volume 9743, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V; 974306 (2016) https://doi.org/10.1117/12.2213362
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

For solar cells composed of direct bandgap semiconductors such as GaAs, the performance can be significantly improved by utilizing photon recycling and luminescence coupling effects. Accurate modeling with those effects may offer insightful guidance in designing such devices. Previous research has demonstrated different numerical models on photon recycling and luminescent coupling. However, most of those works are based on complicated theoretical derivation and idealized assumptions, which made them hard to implement. In addition, very few works provide method to model both photon recycling and luminescent coupling effects. In this paper, we demonstrate an easy-to-implement but accurate numerical model to simulate those effects in multijunction solar cells. Our numerical model can be incorporated into commonly used equivalent circuit model with high accuracy. The simulation results were compared with experimental data and exhibit good consistency. Our numerical simulation is based on a self-consistent optical-electrical model that includes non-ideal losses in both the single junction and the tandem device. Based on the numerical analysis, we modified the two-diode circuit model by introducing additional current-control-current sources to represent the effects of both photon recycling and luminescence coupling. The effects of photon recycling on the diode equation have been investigated based on detailed-balanced model, accounting for internal optical losses. We also showed the practical limit of performance enhancement of photon recycling and luminescent coupling effects. This work will potentially facilitate the accurate simulation of solar cell with non-ideal effects, and provide more efficient tools for multijunction solar cell design and optimization.

Citation Download Citation

Mengyang Yuan, Zheng Lyu, Jieyang Jia, Yusi Chen, Yi Liu, Yijie Huo, Yu Miao, and James Harris "Numerical modeling of photon recycling and luminescence coupling in non-ideal multijunction solar cell", Proc. SPIE 9743, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V, 974306 (14 March 2016); https://doi.org/10.1117/12.2213362

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KEYWORDS

Luminescence

Electroluminescence

Multijunction solar cells

Solar cells

Circuit switching

Diodes

Gallium arsenide

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