Effect of experimental noise on recovery of the electronic density of states from transient photocurrent data

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 - https://www.scopus.com/pages/publications/0035556482

U2 - 10.1557/PROC-664-A22.6

DO - 10.1557/PROC-664-A22.6

M3 - Conference article

AN - SCOPUS:0035556482

SN - 1946-4274

VL - 664

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

M1 - A22.6

T2 - Amorphous and Heterogeneous Silicon Based Films 2001

Y2 - 16 April 2001 through 20 April 2001

ER -