TY - JOUR
T1 - Spin equilibration in hydrogen depleted amorphous silicon
AU - Zafar, Sufi
AU - Schiff, E. A.
N1 - Funding Information:
2. MEASUREMENTS We prepared a thickness series of a-Si:H specimens using plasma decomposition of pure silane gas and a substrate temperature of 250 C (13.56 MHz excitation frequency, Plasma Technology, Inc. "Plasmalab" reactor.) For the as-deposited specimens we found an interfacial spin density of 2 × 1012 cm -3 and a bulk density of 1.0 × 1016 cm -3 at 500 K. Two groups of specimens were then annealed at 500 and 550 C; this treatment is known to evolve hydrogen from a-Si:H. At various t This work was supported by SERI XG-1-10063-7. $ Present address: The James Franck Institute, University of Chicago, Chicago IL 60637, USA.
PY - 1991
Y1 - 1991
N2 - Equilibration of the spin density in hydrogenated amorphous silicon (a-Si:H) following thermal quenching was measured in as-deposited and hydrogen-depleted specimens. The behavior in the depleted specimens was comparable to that for as-deposited specimens: the thermal activation energy for the equilibration time is 1.6 eV, and equilibration times are approximately proportional to the spin density. A hydrogen-mediated model for equilibration is presented.
AB - Equilibration of the spin density in hydrogenated amorphous silicon (a-Si:H) following thermal quenching was measured in as-deposited and hydrogen-depleted specimens. The behavior in the depleted specimens was comparable to that for as-deposited specimens: the thermal activation energy for the equilibration time is 1.6 eV, and equilibration times are approximately proportional to the spin density. A hydrogen-mediated model for equilibration is presented.
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U2 - 10.1016/S0022-3093(05)80121-8
DO - 10.1016/S0022-3093(05)80121-8
M3 - Article
AN - SCOPUS:0026415469
SN - 0022-3093
VL - 137-138
SP - 323
EP - 326
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
IS - PART 1
ER -