PERC Silicon PV Infrared to Ultraviolet Optical Model

Indra Subedi, Timothy Silverman, Michael Deceglie, Nikolas Podraza

Research output: Contribution to journalArticlepeer-review

7 Scopus Citations


Optical modeling of aluminum back surface field (Al-BSF) and passivated emitter and rear contact (PERC) silicon wafer solar cells are extended into the infrared wavelength range (300–2500 nm). The model incorporates ray tracing to account for pyramidal texture of the front silicon surface, free carrier absorption in the front emitter; bulk silicon wafer, BSF; and Lambertian scattering at the silicon back contact. Total reflectance of pyramidal textured cells with different contact geometries with and without encapsulation are simulated. Simulated reflectance and short circuit current density match well with experimental values. These physics-based optical models serve as input for evaluating optical and thermal management strategies for silicon wafer solar cells.

Original languageAmerican English
Article numberArticle No. 110655
Number of pages6
JournalSolar Energy Materials and Solar Cells
StatePublished - 15 Sep 2020

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

NREL Publication Number

  • NREL/JA-5K00-73273


  • Infrared reflectance
  • PERC cells
  • Ray tracing
  • Scattering
  • Silicon solar cell
  • Thermal management


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