Non-Linear Luminescent Coupling in Series-Connected Multijunction Solar Cells

Research output: Contribution to journalArticlepeer-review

109 Scopus Citations

Abstract

The assumption of superposition or linearity of photocurrent with solar flux is widespread for calculations and measurements of solar cells. The well-known effect of luminescent coupling in multijunction solar cells has also been assumed to be linear with excess current. Here we show significant non-linearities in luminescent coupling in III-V multijunction solar cells and propose a simple model based on competition between radiative and nonradiative processes in the luminescent junction to explain these non-linearities. We demonstrate a technique for accurately measuring the junction photocurrents under a specified reference spectrum, that accounts for and quantifies luminescent coupling effects.

Original languageAmerican English
Article number251106
Number of pages5
JournalApplied Physics Letters
Volume100
Issue number25
DOIs
StatePublished - 18 Jun 2012

NREL Publication Number

  • NREL/JA-5200-54916

Keywords

  • luminescent coupling
  • solar energy, solar cells

Fingerprint

Dive into the research topics of 'Non-Linear Luminescent Coupling in Series-Connected Multijunction Solar Cells'. Together they form a unique fingerprint.

Cite this