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
T2 - Amorphous and Heterogeneous Silicon Based Films 2001
Y2 - 16 April 2001 through 20 April 2001
ER -