High Efficiency, Multijunction GaInP/GaAs Solar Cells

Research output: Contribution to conferencePaper


For most of the last two decades the energy conversion efficiency of monolithic, two-terminal, two-junction solar cells has steadily increased. The current leader in this field is the CaInP/GaAs tandem cell with an efficiency of 30%. In this paper, we briefly review the technology of tandem cells with an emphasis on the GaInP/GaAs device structure and its near-term potential for poweringcommunication satellites and far-term potential for large scale terrestrial concentrator applications. We then review key aspects of this device, focusing on some of the interesting problems that have been encountered over the years in the development of this device structure, e.g. spontaneous ordering of GaInP, hetrointerface quality, dopant diffusion/memory effects, and large scale productionefforts.
Original languageAmerican English
Number of pages6
StatePublished - 1997
EventCompound Semiconductors 1996: Twenty-Third International Symposium on Compound Semiconductors - St. Petersburg, Russia
Duration: 23 Sep 199627 Sep 1996


ConferenceCompound Semiconductors 1996: Twenty-Third International Symposium on Compound Semiconductors
CitySt. Petersburg, Russia

NREL Publication Number

  • NREL/CP-520-24385


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