Abstract
The effects of random noise on density of states determination from transient photocurrent data are examined by superimposing noise levels similar to those found experimentally (1% to 20%) on computer-simulated current-time data. Mathematically approximate methods based on Fourier and Laplace transformations are found to operate effectively at noise levels of up to 20%. Mathematically exact methods offer higher resolution, but this is compromised by greater susceptibility to noise. A Tikhonov regularisation method yields both high resolution and good noise tolerance.
| Original language | English |
|---|---|
| Article number | A22.6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 664 |
| DOIs | |
| Publication status | Published - 2001 |
| Event | Amorphous and Heterogeneous Silicon Based Films 2001 - San Francisco, CA, United States Duration: 16 Apr 2001 → 20 Apr 2001 |
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Effect of experimental noise on recovery of the electronic density of states from transient photocurrent data. / Reynolds, Steve; Main, Charlie; Gueorguieva, Mariana J.
In: Materials Research Society Symposium - Proceedings, Vol. 664, A22.6, 2001.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Effect of experimental noise on recovery of the electronic density of states from transient photocurrent data
AU - Reynolds, Steve
AU - Main, Charlie
AU - Gueorguieva, Mariana J.
PY - 2001
Y1 - 2001
N2 - The effects of random noise on density of states determination from transient photocurrent data are examined by superimposing noise levels similar to those found experimentally (1% to 20%) on computer-simulated current-time data. Mathematically approximate methods based on Fourier and Laplace transformations are found to operate effectively at noise levels of up to 20%. Mathematically exact methods offer higher resolution, but this is compromised by greater susceptibility to noise. A Tikhonov regularisation method yields both high resolution and good noise tolerance.
AB - The effects of random noise on density of states determination from transient photocurrent data are examined by superimposing noise levels similar to those found experimentally (1% to 20%) on computer-simulated current-time data. Mathematically approximate methods based on Fourier and Laplace transformations are found to operate effectively at noise levels of up to 20%. Mathematically exact methods offer higher resolution, but this is compromised by greater susceptibility to noise. A Tikhonov regularisation method yields both high resolution and good noise tolerance.
UR - http://www.scopus.com/inward/record.url?scp=0035556482&partnerID=8YFLogxK
U2 - 10.1557/PROC-664-A22.6
DO - 10.1557/PROC-664-A22.6
M3 - Conference article
AN - SCOPUS:0035556482
VL - 664
JO - Materials Research Society Symposium Proceedings
JF - Materials Research Society Symposium Proceedings
SN - 0272-9172
M1 - A22.6
ER -