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Influences of Carrier Generation and Recombination on the Solar Cell Conversion Efficiency

  • Takashi KitaEmail author
  • Yukihiro Harada
  • Shigeo Asahi
Chapter
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Part of the Green Energy and Technology book series (GREEN)

Abstract

In the previous chapter, we determined the ideal conversion efficiency \(u(\nu_{\text{g}} ,T_{\text{s}} )\) of an ideal solar cell. Since we wanted to know the limiting efficiency in the most ideal case, we neglected effects like internal generation of radiation and luminescence. However, the relation between the voltage and the current in an actual solar cell that employs a semiconductor diode (i.e., a p–n junction) is incompatible with the assumptions in Sect. 3.4 (these assumptions enabled us to set the electromotive force equal to that provided by the potential \(E_{\text{g}} /e\)). In the present chapter, we analyze the conversion efficiency of a solar cell that possesses a nonzero temperature. By including losses that arise due to the very fact of a finite solar cell temperature, the relation between the current and voltage is derived, and then, we determine the open-circuit voltage and the short-circuit current.

Keywords

Radiative and non-radiative generation Radiative and non-radiative recombination Short-circuit current Open-circuit voltage 

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Electrical and Electronic EngineeringKobe UniversityKobeJapan

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