Calculation of the Thermodynamic Voltage Limit of CdSeTe Solar Cells

Darius Kuciauskas, Arthur Onno, Adam Danielson, Carey Reich, Anna Kindvall, William Weigand, Amit Munshi, Siming Li, Walajabad Sampath, Zachary Holman

Research output: Contribution to conferencePaperpeer-review

4 Scopus Citations


The first step to understand the origin of losses in any photovoltaic solar cell is to determine the fundamental thermodynamic efficiency and voltage limits of such a device. In this contribution, we detail techniques to calculate the voltage limit in the case of cadmium selenium telluride (CdSeTe) solar cells, and how approaches based on bandgap alone - i.e., the Shockley-Queisser approach with step-function absorptance - can overestimate the thermodynamic open-circuit voltage limit V_{oc,ideal}. This is particularly true for arsenic-doped samples, which tend to exhibit below-bandgap absorptance.

Original languageAmerican English
Number of pages3
StatePublished - 14 Jun 2020
Event47th IEEE Photovoltaic Specialists Conference, PVSC 2020 - Calgary, Canada
Duration: 15 Jun 202021 Aug 2020


Conference47th IEEE Photovoltaic Specialists Conference, PVSC 2020

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

NREL Publication Number

  • NREL/CP-5900-79476


  • absorptance
  • cadmium selenium telluride
  • photoluminescence
  • thermodynamic voltage limit


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