Thermal-equilibrium defect processes in hydrogenated amorphous silicon

Z. E. Smith, S. Aljishi, D. Slobodin, V. Chu, S. Wagner, Patrick M. Lenahan, R. R. Arya, M. S. Bennett

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The first experimental evidence for a thermal-equilibrium defect density in undoped hydrogenated amorphous silicon, a metastable material, is presented. The defect density is in thermal equilibrium at temperatures above 200°C; the defects measured at room temperature are largely those frozen in during cooling from the equilibrium regime. Rapid quenching reversibly increases defect density. The defect density can be reversibly decreased by shunting of the defect-generation process during cooling. This latter technique has important implications for a-Si:H-based solar cells.

Original languageEnglish (US)
Pages (from-to)2450-2453
Number of pages4
JournalPhysical Review Letters
Issue number19
StatePublished - Jan 1 1986


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Smith, Z. E., Aljishi, S., Slobodin, D., Chu, V., Wagner, S., Lenahan, P. M., Arya, R. R., & Bennett, M. S. (1986). Thermal-equilibrium defect processes in hydrogenated amorphous silicon. Physical Review Letters, 57(19), 2450-2453.