Hydrazine N Source for Growth of GaInNAs for Solar Cells

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We evaluate hydrazine (Hy) as a nitrogen precursor source for the growth of GaNAs and GaInNAs for application in 1-eV solar cells lattice-matched to GaAs, and compare it to the more commonly used dimethylhydrazine (DMHy). The incorporation efficiency of N into the GaNAs alloy is found to be one to two orders of magnitude higher with Hy than with DMHy. This high N incorporation makes convenient the growth of GaNAs at higher growth temperatures, Tg=650 C, and arsine flows, AsH3/III=44, than are generally possible with the use of DMHy. GaInNAs and GaNAs solar cells are grown under these growth conditions ... continued below

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Friedman, D. J.; Geisz, G. F.; Kurtz, S. R.; Norman, A. G. (National Renewable Energy Laboratory) & Yeh, Y. C. M. (TECSTAR, Inc.) May 25, 1999.

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We evaluate hydrazine (Hy) as a nitrogen precursor source for the growth of GaNAs and GaInNAs for application in 1-eV solar cells lattice-matched to GaAs, and compare it to the more commonly used dimethylhydrazine (DMHy). The incorporation efficiency of N into the GaNAs alloy is found to be one to two orders of magnitude higher with Hy than with DMHy. This high N incorporation makes convenient the growth of GaNAs at higher growth temperatures, Tg=650 C, and arsine flows, AsH3/III=44, than are generally possible with the use of DMHy. GaInNAs and GaNAs solar cells are grown under these growth conditions and compared to a GaAs cell grown under the same conditions to determine the extent to which the poor minority-carrier properties routinely observed for the N-containing material can be attributed to the growth conditions. Finally, the background carrier concentrations for Hy- and DMHy-grown material are compared, and little difference is found between the two sources..

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OSTI as DE00007076

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  • Presented at the Electrochemical Society '99 Proceedings, Seattle, WA (US), 05/02/1999--05/06/1999

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  • Other: DE00007076
  • Report No.: NREL/CP-520-26609
  • Grant Number: AC36-99-GO10337
  • Office of Scientific & Technical Information Report Number: 7076
  • Archival Resource Key: ark:/67531/metadc708337

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  • May 25, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • March 31, 2016, 2:56 p.m.

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Friedman, D. J.; Geisz, G. F.; Kurtz, S. R.; Norman, A. G. (National Renewable Energy Laboratory) & Yeh, Y. C. M. (TECSTAR, Inc.). Hydrazine N Source for Growth of GaInNAs for Solar Cells, article, May 25, 1999; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc708337/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.