Nanoparticle-Based Contacts to CdTe

Research output: Contribution to conferencePaper


Our team has been investigating the use of particle-based contacts in CdTe solar cell technologies. Toward this end, particles of Cu-doped HgTe (Hg-Cu-Te) and Sb-Te have been applied as contacts to CdTe/CdS/SnO2 heterostructures. These metal telluride materials were characterized by standard methods. Hg-Cu-Te particles in graphite electrodag contacts produced CdTe solar cells with efficienciesabove 12% and series resistance (Rse) of 6 ohms or less. Metathesis preparation of Cu(I) and Cu(II) tellurides were attempted as a means of characterizing the valence state of Cu in the Hg-Cu-Te ink. For Sb-Te contacts to CdTe, open circuit voltages in excess of 800 mV were observed, however, efficiencies were limited to 9%; perhaps a consequence of the marked increase in the Rse in thesenon-graphite containing contacts. Aceylene black was mixed into the methanolic Sb-Te colloid as a means of reducing Rse, however, no improvement in device properties was observed.
Original languageAmerican English
Number of pages5
StatePublished - 1999
EventMicrocrystalline and Nanocrystalline Semiconductors 1998: Materials Research Society Symposium - Boston, Massachusetts
Duration: 30 Nov 19983 Dec 1998


ConferenceMicrocrystalline and Nanocrystalline Semiconductors 1998: Materials Research Society Symposium
CityBoston, Massachusetts

NREL Publication Number

  • NREL/CP-520-26547


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