Surface passivation for CdTe devices

Reese, Matthew O.; Perkins, Craig L.; Burst, James M.; Gessert, Timothy A.; Barnes, Teresa M.; Metzger, Wyatt K.

Surface passivation for CdTe devices

Patent · Tue Aug 01 00:00:00 EDT 2017

OSTI ID:1373708

Reese, Matthew O.; Perkins, Craig L.; Burst, James M.; Gessert, Timothy A.; Barnes, Teresa M.; Metzger, Wyatt K.

In one embodiment, a method for surface passivation for CdTe devices is provided. The method includes adjusting a stoichiometry of a surface of a CdTe material layer such that the surface becomes at least one of stoichiometric or Cd-rich; and reconstructing a crystalline lattice at the surface of the CdTe material layer by annealing the adjusted surface.

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC36-08GO28308

Assignee:: Alliance for Sustainable Energy, LLC

Patent Number(s):: 9,722,111

Application Number:: 14/615,282

OSTI ID:: 1373708

Country of Publication:: United States

Language:: English

References (6)

Polycrystalline CdTe thin films for photovoltaic applications Bosio, Alessio; Romeo, Nicola; Mazzamuto, Samantha Progress in Crystal Growth and Characterization of Materials, Vol. 52, Issue 4, p. 247-279 https://doi.org/10.1016/j.pcrysgrow.2006.09.001	journal	December 2006
Surface passivation by sulfur treatment of undoped p-CdTe(100) Kang, C. K.; Yuldashev, Sh. U.; Leem, J. H. Journal of Applied Physics, Vol. 88, Issue 4, p. 2013-2015 https://doi.org/10.1063/1.1305551	journal	August 2000
Luminescence effects of ion-beam bombardment of CdTe surfaces Olvera, J.; Martínez, O.; Plaza, J. L. Journal of Luminescence, Vol. 129, Issue 9, p. 941-944 https://doi.org/10.1016/j.jlumin.2009.04.004	journal	September 2009
Photoemission studies of CdTe(100) and the Ag-CdTe(100) interface: Surface structure, growth behavior, Schottky barrier, and surface photovoltage John, P.; Miller, T.; Hsieh, T. C. Physical Review B, Vol. 34, Issue 10, p. 6704-6712 https://doi.org/10.1103/PhysRevB.34.6704	journal	November 1986
Dependence of the Minority-Carrier Lifetime on the Stoichiometry of CdTe Using Time-Resolved Photoluminescence and First-Principles Calculations Ma, Jie; Kuciauskas, Darius; Albin, David Physical Review Letters, Vol. 111, Issue 6, Article No. 067402 https://doi.org/10.1103/PhysRevLett.111.067402	journal	August 2013
Time-resolved photoluminescence studies of CdTe solar cells Metzger, W. K.; Albin, D.; Levi, D. Journal of Applied Physics, Vol. 94, Issue 5, p. 3549-3555 https://doi.org/10.1063/1.1597974	journal	September 2003

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