Abstract

With much effort devoted to the improvement of material and electrical designs, high-quality GaAs single-junction solar cell performance is getting close to its theoretical limit. To further improve device performance, it is critical to find the optimal optical designs for single-junction solar cells. In this work, planar single-junction solar cells are investigated using a semi-analytical model, where combinations of smooth, textured, non-reflective, and reflective surfaces are explored. Statistical ray tracing is used to obtain the optical properties of planar structures and the impact of critical design parameters such as junction thickness, together with material quality and solar concentration on the device performance is analyzed. The combination of textured and reflective surfaces shows the best performance by effectively increasing the photon and carrier densities, which leads to higher open-circuit voltages and conversion efficiencies. It is expected that the GaAs single-junction cells can practically achieve ∼30% conversion efficiency under one sun AM1.5G, with optimal optical structures, the state-of-art material quality, and properly designed doping profile. Even higher efficiency of ∼38% is possible via concentration of 1000 suns.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8256
DOIs
StatePublished - 2012
EventPhysics, Simulation, and Photonic Engineering of Photovoltaic Devices - San Francisco, CA, United States
Duration: Jan 23 2012Jan 26 2012

Other

OtherPhysics, Simulation, and Photonic Engineering of Photovoltaic Devices
CountryUnited States
CitySan Francisco, CA
Period1/23/121/26/12

Fingerprint

Optical design
Optical Design
Solar Cells
Gallium Arsenide
Solar cells
solar cells
Conversion efficiency
Ray tracing
Open circuit voltage
Sun
Carrier concentration
Analytical models
Ray Tracing
Photons
Optical properties
photon density
Parameter Design
Doping (additives)
Optical Properties
Analytical Model

Keywords

  • GaAs
  • Optical design
  • Single-junction solar cell
  • Surface roughening

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Liu, S., Ding, D., Johnson, S., & Zhang, Y-H. (2012). Optimal optical designs for planar GaAs single-junction solar cells with textured and reflective surfaces. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8256). [82560M] https://doi.org/10.1117/12.909841

Optimal optical designs for planar GaAs single-junction solar cells with textured and reflective surfaces. / Liu, Shi; Ding, Ding; Johnson, Shane; Zhang, Yong-Hang.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8256 2012. 82560M.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, S, Ding, D, Johnson, S & Zhang, Y-H 2012, Optimal optical designs for planar GaAs single-junction solar cells with textured and reflective surfaces. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8256, 82560M, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices, San Francisco, CA, United States, 1/23/12. https://doi.org/10.1117/12.909841
Liu S, Ding D, Johnson S, Zhang Y-H. Optimal optical designs for planar GaAs single-junction solar cells with textured and reflective surfaces. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8256. 2012. 82560M https://doi.org/10.1117/12.909841
Liu, Shi ; Ding, Ding ; Johnson, Shane ; Zhang, Yong-Hang. / Optimal optical designs for planar GaAs single-junction solar cells with textured and reflective surfaces. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8256 2012.
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