On the determination of the density of states in inhomogeneous samples from steady-state space-charge-limited currents
- 15 February 1989
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 65 (4) , 1559-1565
- https://doi.org/10.1063/1.342973
Abstract
The reliability of the determination of the density of local states in inhomogeneous samples from space-charge-limited current-voltage characteristics is examined. It is shown that the densities of states may be determined with an error as large as several orders of magnitude, depending on spatial distributions of the states. The energies of the local states may be determined to within a few kT. The equations derived in the paper are applied to experimental results on a-Si:H reported in the literature allowing for a reconstruction of the spatial distribution of local states.This publication has 23 references indexed in Scilit:
- The bulk trap spectroscopy of solids by temperature-modulated space-charge-limited currents (TMSCLC): Application to real crystalline and amorphous semiconductorsJournal of Physics C: Solid State Physics, 1986
- The bulk trap spectroscopy of solids by temperature-modulated space-charge-limited currents (TMSCLC) in the steady stateJournal of Physics C: Solid State Physics, 1985
- Space-charge-limited currents: Refinements in analysis and applications to a-Si1−xGex:H alloysJournal of Applied Physics, 1983
- The density of states in amorphous silicon determined by space-charge-limited current measurementsPhilosophical Magazine Part B, 1982
- An exact evaluation of steady-state space-charge-limited currents for arbitrary trap distributionsPhysica Status Solidi (a), 1981
- Use of space-charge-limited current measurements to determine the properties of energetic distributions of bulk trapsJournal of Applied Physics, 1980
- A differential method of analysis of steady-state space-charge-limited currents: An extensionPhysica Status Solidi (a), 1978
- A differential method of analysis of steady-state space-charge-limited current-voltage characteristicsPhysica Status Solidi (a), 1977
- Quantitative analysis of hydrogen in glow discharge amorphous siliconApplied Physics Letters, 1977
- Note on the interpretation of space charge limited currents with trapsPhysica Status Solidi (a), 1974