Accession Number:

AD0499816

Title:

Trapping in Solids.

Personal Author(s):

Corporate Author:

RCA LABS PRINCETON NJ

Report Date:

1948-10-15

Abstract:

Phosphors with an exponential decay may be differentiated from those with a power-law decay by the presence of low-lying highly localized impurity-introduced levels, such that no local or remote trapping is encountered either upon excitation or return. Such highly localized levels are absent for power-law decay phosphors and either 1 semi-localized high-lying levels give rise to trapping in the vicinity of the center, or 2 entrance of the excited electron into the conduction band gives rise to trapping at some distance from the parent center. The temperature dependence of efficiency and decay is the result of competition between a luminescence-producing and a dissipative transition. The behavior of traps under these circumstances can be seen simultaneously from related variations in efficiency and decay for four phosphors observed. Author

Descriptive Note:

Interim rept. no. 2, 12 May-8 Oct 48,

Pages:

0038

Contract Number:

N6onr-236

File Size:

0.00MB

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